NIPPON STEEL & SUMITOMO METAL CORPORATION Patent applications |
Patent application number | Title | Published |
20160130711 | HOT-ROLLED STEEL SHEET, COLD-ROLLED STEEL SHEET, GALVANIZED STEEL SHEET, AND METHODS OF MANUFACTURING THE SAME - A hot-rolled steel sheet has an average value of the X-ray random intensity ratio of a {100}<011> to {223}<110> orientation group at least in a sheet thickness central portion that is in a sheet thickness range of ⅝ to ⅜ from a steel sheet surface of 1.0 to 6.0, an X-ray random intensity ratio of a {332}<113> crystal orientation of 1.0 to 5.0, rC which is an r value in a direction perpendicular to a rolling direction of 0.70 to 1.10, and r30 which is an r value in a direction that forms an angle of 30° with respect to the rolling direction of 0.70 to 1.10. | 05-12-2016 |
20160130680 | COLD-ROLLED STEEL SHEET, GALVANIZED COLD-ROLLED STEEL SHEET AND METHOD OF MANUFACTURING THE SAME - A cold-rolled steel sheet includes a predetermined chemical composition, and includes a structure expressed by: an area fraction of ferrite: 95% or more; an area fraction of retained austenite and an area fraction of martensite: 1% to 3% in total; a product of the area fraction of retained austenite and a carbon concentration in retained austenite: 1 or more; a value of I(111)/{I(100)+I(110)} at a region where a depth from a surface is ¼ of a thickness of the cold-rolled steel sheet when intensity of a (hkl) plane is expressed by I(hkl): 2 or less. | 05-12-2016 |
20160129489 | A WIRE ROD HAVING TENSILE STRENGTH OF 950 TO 1600MPa FOR MANUFACTURING A STEEL WIRE FOR A PEARLITE STRUCTURE BOLT, A STEEL WIRE HAVING TENSILE STRENGTH OF 950 TO 1600MPa FOR A PEARLITE STRUCTURE BOLT, A PEARLITE STRUCTURE BOLT, AND MANUFACTURING METHOD FOR THE SAME - A wire rod having a tensile strength of 950 to 1600 MPa for manufacturing a steel wire for a pearlite structure bolt according to the present invention includes a predetermined chemical composition and is manufactured by hot rolling and then direct isothermal transformation treating, in which when an amount of C in terms of mass % is indicated as , a structure at an area from a surface of the wire rod to a depth of 4.5 mm includes 140× area % or more of a pearlite structure, the average block size of a pearlite block at the area from the surface of the wire rod to the depth of 4.5 mm is 20 μm or less, in which the average block size is measured in a transverse section of the wire rod, and the average lamellar spacing of the pearlite structure at the area from the surface of the wire rod to the depth of 4.5 mm is more than 120 nm to 200 nm. | 05-12-2016 |
20160122900 | APPARATUS FOR PRODUCING SiC SINGLE CRYSTALS AND METHOD OF PRODUCING SiC SINGLE CRYSTALS USING SAID PRODUCTION APPARATUS - An apparatus for producing SiC single crystals where the quality of the SiC single crystals is improved, and a production method using such an apparatus are provided. The apparatus for producing SiC single crystals according to an embodiment of the present invention is employed to produce an SiC single crystal by the solution growth method. The production apparatus includes a crucible and a support shaft. The crucible accommodates an Si—C solution. The support shaft supports the crucible. The support shaft includes a heat removing portion for removing heat from a bottom portion of the crucible. The heat removing portion includes one of (a) a contact portion having a thermal conductivity not less than that of the bottom portion and contacting at least a portion of the bottom portion and (b) a space adjacent to at least a portion of the contact portion or the bottom portion. | 05-05-2016 |
20160122891 | STEEL SHEET FOR CONTAINERS, AND METHOD FOR PRODUCING STEEL SHEET FOR CONTAINERS - A steel sheet for containers includes a steel sheet, an underlying Ni layer formed by performing a Ni coating or a Fe—Ni alloy coating containing Ni in an amount of 5 mg/m | 05-05-2016 |
20160114379 | PRESS FORMING APPARATUS AND PRESS FORMING METHOD - A press forming apparatus includes: a punch ( | 04-28-2016 |
20160102380 | HEAT-TREATED STEEL MATERIAL AND METHOD OF MANUFACTURING THE SAME - A heat-treated steel material includes: a chemical composition expressed by, in mass %: C: 0.16% to 0.38%; Mn: 0.6% to 1.5%; Cr: 0.4% to 2.0%; Ti: 0.01% to 0.10%; B: 0.001% to 0.010%; Si: 0.20% or less; P: 0.05% or less; S: 0.05% or less; N: 0.01% or less; Ni: 0% to 2.0%; Cu: 0% to 1.0%; Mo: 0% to 1.0%; V: 0% to 1.0%; Al: 0% to 1.0%; Nb: 0% to 1.0%; REM: 0% to 0.1%; and the balance: Fe and impurities; and a structure expressed by: retained austenite: 1.5 volume % or less; and the balance: martensite. | 04-14-2016 |
20160100459 | CONTROL UNIT OF INDUCTION HEATING UNIT, INDUCTION HEATING SYSTEM, AND METHOD OF CONTROLLING INDUCTION HEATING UNIT - A control unit of an induction heating unit controls AC power output to a heating coil of a transverse type induction heating unit that allows an alternating magnetic field to intersect a sheet surface of a conductive sheet that is being conveyed to inductively heat the conductive sheet. The control unit includes: a magnetic energy recovery switch that outputs AC power to the heating coil; a frequency setting unit that sets an output frequency in response to at least one of the relative permeability, resistivity, and sheet thickness of the conductive sheet; and a gate control unit that controls a switching operation of the magnetic energy recovery switch on the basis of the output frequency set by the frequency setting unit. | 04-07-2016 |
20160100458 | CONTROL UNIT OF INDUCTION HEATING UNIT, INDUCTION HEATING SYSTEM, AND METHOD OF CONTROLLING INDUCTION HEATING UNIT - A control unit of an induction heating unit controls AC power output to a heating coil of a transverse type induction heating unit that allows an alternating magnetic field to intersect a sheet surface of a conductive sheet that is being conveyed to inductively heat the conductive sheet. The control unit includes: a magnetic energy recovery switch that outputs AC power to the heating coil; a frequency setting unit that sets an output frequency in response to at least one of the relative permeability, resistivity, and sheet thickness of the conductive sheet; and a gate control unit that controls a switching operation of the magnetic energy recovery switch on the basis of the output frequency set by the frequency setting unit. | 04-07-2016 |
20160096219 | METHOD FOR CONTINUOUSLY CASTING SLAB - A main purpose of the present invention is to provide a continuous casting method for a slab satisfying reductions of center segregation and center porosity, and inhibitions of surface cracks and internal cracks of a slab. The method includes a step of carrying out reduction on a slab having an unsolidified part by horizontal rolls and a step of alternatively carrying out reduction on the slab completely solidified by horizontal rolls and vertical rolls, wherein in the former step, reduction ratio of the slab is more than 0.5% and no more than 3% and a ratio of a width of the unsolidified part at the cross section of the slab to a width of a contact part of the slab and the rolls is 0 to 7.15, and in the latter step, each reduction ratio of the slab by the rolls is 5.4% to 6.8%. | 04-07-2016 |
20160083823 | ROLLED ROUND STEEL MATERIAL FOR STEERING RACK BAR AND STEERING RACK BAR - A rolled round steel material for a steering rack bar, having a chemical composition consisting of C: 0.38 to 0.55%, Si: not more than 1.0%, Mn: 0.20 to 2.0%, S: 0.005 to 0.10%, Cr: 0.01 to 2.0%, Al: 0.003 to 0.10%, and N: 0.003 to 0.03%, with the balance being Fe and impurities, and P being not more than 0.030% in the impurities, and a microstructure consisting of ferrite (F), lamellar pearlite (LP), and cementite (C), wherein in a cross-section perpendicular to the rolling direction: an average grain diameter of F≦10 μm, an area fraction of LP is less than 20%, and the number of particles of spheroidal cementite (SC) among C≧4×10 | 03-24-2016 |
20160082701 | GALVANNEALED STEEL SHEET AND MANUFACTURING METHOD THEREOF - A galvannealed steel sheet excellent in press formability including a plating layer being a plating layer containing 7.2 to 10.6 mass % of Fe, 0.2 to 0.4 mass % of Al, and 0.1 mass % of Ni and the like, and the balance being composed of Zn and impurities, in which in a vertical cross-section of the plating layer, an average thickness of a ξ phase is 0.2 μm or less and an average thickness of Γ phases existing in contact with a base iron is 0.5 μm or less, in the Γ phase, Ni and the like are contained at a ratio in the Γ phase of 0.5 mass % or more, a phase existing in contact with the Γ phase is a mixed phase of Γ | 03-24-2016 |
20160082543 | SPOT-WELDED JOINT AND SPOT WELDING METHOD - By obtaining a spot-welded joint being a spot-welded joint formed by overlapping a plurality of pieces of steel plates ( | 03-24-2016 |
20160076123 | STEEL SHEET - A steel sheet according to the present invention includes a predetermined chemical composition, in which amounts of each elements by mass % in the chemical composition satisfy both of expression “0.3000≦{Ca/40.88+(REM/140)/2}/(S/32.07)” and expression “Ca≦0.0058−0.0050×C”, and a number density of carbonitrides including Ti which exists independently and has a long side of 5 μm or more is limited to 5 pieces/mm | 03-17-2016 |
20160075109 | GALVANIZED STEEL SHEET AND METHOD FOR PRODUCING THE SAME - A galvanized steel sheet according to the present invention includes a steel sheet and a galvanizing layer which is formed on a surface of the steel sheet. The steel sheet includes as a chemical component, by mass %, C: more than 0.100% to 0.500%, Si: 0.0001% to less than 0.20%, Mn: more than 0.20% to 3.00%, Al: 3.0% to 10.0%, N: 0.0030% to 0.0100%, Ti: more than 0.100% to 1.000%, P: 0.00001% to 0.0200%, S: 0.00001% to 0.0100% and a remainder including Fe and impurities. The galvanizing layer includes as a chemical composition, by mass %, Fe: 0.01% to 15% and a remainder including Zn and impurities. The galvanized steel sheet has a specific gravity of 5.5 to less than 7.5. | 03-17-2016 |
20160068942 | Al-BASED ALLOY PLATED STEEL MATERIAL HAVING EXCELLENT POST-COATING CORROSION RESISTANCE - An Al-based alloy plated steel material includes: a steel material and a coating layer formed on a surface of the steel material, wherein the coating layer includes an Al-based alloy plating layer containing, in mass %, not less than 10% nor more than 50% Fe and not less than 3% nor more than 15% Si, and formed on the surface of the steel material; a layer containing ZnO and formed above a surface of the Al alloy plating layer; and a ZnAl | 03-10-2016 |
20160067814 | SPOT WELDING METHOD - A spot welding method is a method of performing spot welding to obtain a spot welded joint, the method including a spot welding with two-stage welding, setting a ratio (I | 03-10-2016 |
20160060744 | CASE-HARDENING STEEL AND CASE-HARDENED STEEL MEMBER - There is provided a case-hardening steel in which in inclusion evaluation using an extreme value statistical method, when an estimated area S is 30,000 mm | 03-03-2016 |
20160060735 | PLATED STEEL SHEET FOR HOT PRESSING, HOT PRESSING METHOD FOR PLATED STEEL SHEET, AND AUTOMOBILE PART - To provide a plated steel sheet for hot pressing, a hot pressing method for the plated steel sheet, and an automobile part made by the hot pressing method that has an excellent lubricity with less deposition amount and can improve formability and productivity in hot pressing work and also can improve chemical conversion treatability after hot press forming, there is provided an Al plating layer formed on one side or both sides of the steel sheet, the Al plating layer containing at least Al, and further containing one or more elements, at a total content of 0.02 to 2 mass %, selected from Mg, Ca, Sr, Li, Na, and K; and a surface coating layer laminated on the Al plating layer and containing at least ZnO. | 03-03-2016 |
20160060722 | HOT-STAMPED STEEL, COLD-ROLLED STEEL SHEET AND METHOD FOR PRODUCING HOT-STAMPED STEEL - A hot-stamped steel according to the present invention has a predetermined chemical composition, satisfies (5×[Si]+[Mn])/[C]>10 when [C] is the amount of C by mass %, [Si] is the amount of Si by mass %, and [Mn] is the amount of Mn by mass %, includes 40% to 95% ferrite and 5% to 60% martensite in area fraction, and optionally further includes 10% or less pearlite in area fraction, 5% or less retained austenite in volume fraction, and less than 40% bainite in area fraction. The total of the area fraction of ferrite and the area fraction of martensite is 60% or more, the hardness of martensite measured with a nanoindenter satisfies H | 03-03-2016 |
20160053358 | PIERCING PLUG AND MANUFACTURING METHOD OF PIERCING PLUG - A piercing plug includes a plug main body, and a sprayed coating which is formed on a surface of the plug main body and includes iron and iron oxide. A chemical composition of the sprayed coating includes, in addition to the iron and the iron oxide, by mass %, C: 0.015% to 0.6%, Si: 0.05% to 0.5%, Mn: 0.1% to 1.0%, and Cu: 0 to 0.3%. | 02-25-2016 |
20160053352 | LOW-OXYGEN CLEAN STEEL AND LOW-OXYGEN CLEAN STEEL PRODUCT - Low-oxygen clean steel is provided containing C, Si, Mn, P, and S as chemical components, and further containing, by mass %, 0.005% to 0.20% of Al, greater than 0% to 0.0005% of Ca, 0.00005% to 0.0004% of REM, and greater than 0% to 0.003% of T.O, wherein the REM content, the Ca content, and the T.O content satisfy 0.15≦REM/Ca≦4.00 and Ca/T.O≦0.50, nonmetallic inclusions which have a maximum predicted diameter of 1 μm to 30 μm measured using an extreme value statistical method under the condition in which a prediction area is 30,000 mm | 02-25-2016 |
20160047123 | H-SECTION STEEL AND METHOD OF PRODUCING THE SAME - An H-section steel has a predetermined chemical composition in which a thickness of a flange is 100 mm to 150 mm, at a strength evaluation position an area fraction of bainite in a steel structure is 80% or more, yield strength or 0.2% proof strength is 450 MPa or more, tensile strength is 550 MPa or more and 680 MPa or less, at a toughness evaluation position an average austenite grain size in the steel structure is 150 μm or less, and (Mg, Mn)S having a particle size of 0.005 μm to 0.5 μm is included at a density of 1.0×10 | 02-18-2016 |
20160040273 | HIGH-STRENGTH LOW-SPECIFIC-GRAVITY STEEL SHEET HAVING SUPERIOR SPOT WELDABILITY - A steel sheet including, by mass %, C: more than 0.100% and 0.500% or less, Si: 0.0001% or more and less than 0.20%, Mn: more than 0.20% and 0.50% or less, Al: 3.0% or more and 10.0% or less, N: 0.0030% or more and 0.0100% or less, Ti: more than 0.100% and 1.000% or less, P: 0.00001% or more and 0.0200% or less, S: 0.00001% or more and 0.0100% or less, and a remainder including Fe and impurities, in which a sum of a C content and a Ti content satisfies 0.20002-11-2016 | |
20160038983 | TITANIUM CAST PRODUCT FOR HOT ROLLING AND METHOD FOR MANUFACTURING SAME - There is provided a titanium cast product for hot rolling composed of commercially pure titanium, the titanium cast product including: a microstructural refinement layer having acicular microstructure on an outermost layer of a surface layer to be rolled; and an inside microstructural refinement layer having acicular microstructure provided in an inside of the microstructural refinement layer. Cast solidification microstructure is present more inward than the inside microstructural refinement layer. The microstructural refinement layer has finer microstructure than the inside microstructural refinement layer. The microstructural refinement layer is present in a range of a depth of 1 mm or more and less than 6 mm from the surface. The inside microstructural refinement layer is present in an inside of the microstructural refinement layer in a range of a depth of 3 mm or more and 20 mm or less from the surface. | 02-11-2016 |
20160024610 | HIGH STRENGTH STEEL SHEET EXCELLENT IN DELAYED FRACTURE RESISTANCE AND LOW TEMPERATURE TOUGHNESS, AND HIGH STRENGTH MEMBER MANUFACTURED USING THE SAME - A high strength steel sheet containing chemical components of, in mass %, C: 0.20 to 0.42%, Si: 0.06 to 0.5%, Mn: 0.2 to 2.2%, Cr: 0.1 to 2.5%, B: 0.0005 to 0.01%, O: 0.0020 to 0.020%, Al: 0.001 to 0.03%, Ti: 0.001 to 0.05%, N: 0.1% or less, P: 0.03% or less, S: 0.02% or less, and the balance: Fe and inevitable impurities. In steel, 5×10 | 01-28-2016 |
20160023510 | SOUNDPROOF WHEEL FOR RAILWAY VEHICLE - This soundproof wheel includes a soundproofing device ( | 01-28-2016 |
20160017465 | HOT-ROLLED STEEL SHEET - A hot-rolled steel sheet includes a specified chemical composition and includes a steel structure represented by an area ratio of ferrite being 5% to 50%, an area ratio of bainite composed of an aggregate of bainitic ferrite whose grain average misorientation is 0.4° to 3° being 50% to 90%, and a total area ratio of martensite, pearlite, and retained austenite being 5% or less. | 01-21-2016 |
20160016610 | AUTOMOBILE STRUCTURAL MEMBER AND MANUFACTURING METHOD OF THE SAME - An automobile structural member ( | 01-21-2016 |
20160002756 | HIGH STRENGTH, HOT DIPPED GALVANIZED STEEL SHEET EXCELLENT IN SHAPEABILITY AND METHOD OF PRODUCTION OF SAME - A high strength hot dipped galvanized steel sheet is provided. By controlling the amount of addition of Ti instead of the addition of Nb or B, it is possible to obtain an effect of retarding recrystallization and grain growth even if annealing by a continuous annealing process in a temperature range of the general annealing temperature of 720° C. to a temperature of the lower of 800° C. or Ac3 temperature. By controlling the rolling and heat treatment conditions, it is possible to control the ferrite phase rate, grain size of the low temperature transformed phases, ratio of average values of the nano hardnesses of the ferrite phase and low temperature transformed phases, and fluctuations of hardnesses of the low temperature transformed phases in a composite structure steel of ferrite and low temperature transformed phases and obtain a high strength hot dipped galvanized steel sheet. | 01-07-2016 |
20160002476 | THREADED TUBULAR COMPONENT PROTECTED BY A FILM - A tubular component includes at least one threaded portion for connecting the component with a complementary component, wherein at least a portion of the threaded portion is coated with a strippable film which protects against corrosion. The film can be manually strippable. The film can be applied to a lubricating layer which has already been deposited on the surface of the threaded portion. The strippable film can be used to improve maintenance of mechanical properties of the threaded portion during storage thereof. | 01-07-2016 |
20150376730 | HOT-ROLLED STEEL SHEET AND MANUFACTURING METHOD THEREOF - A hot-rolled steel sheet has a composition containing: in mass %, C: 0.01 to 0.2%; Si: 2.5% or less; Mn: 4.0% or less; P: 0.10% or less; S: 0.03% or less; Al: 0.001 to 2.0%; N: 0.01% or less; and O: 0.01% or less, and one kind or a total of two kinds of Ti and Nb for 0.01 to 0.30%. An average effective crystal grain diameter at a sheet thickness ¼ part is 10 μm or less, and an average effective crystal grain diameter at a part of a range of 50 μm from a surface is 6 μm or less. A structure of the steel sheet is tempered martensite or lower bainite, and a volume fraction thereof is 90% or more as a total. | 12-31-2015 |
20150367408 | CONTINUOUS CASTING EQUIPMENT - Continuous casting equipment includes a casting product reduction apparatus and a casting product drawing apparatus, the casting product reduction apparatus including a pair of casting product reduction rolls that sandwich and apply pressure to a casting product and being configured to apply reduction to the casting product, the casting product drawing apparatus being provided in a following stage of the casting product reduction apparatus and configured to sandwich and draw the casting product with a pair of casting product drawing rolls. At least one of the pair of casting product reduction rolls includes a large-diameter part that projects radially outward in an axial-direction center region and applies pressure to a width-direction center region of the casting product. The casting product that is subjected to reduction by the casting product reduction apparatus has a depressed part corresponding to the large-diameter part. At least one of the pair of casting product drawing rolls of the casting product drawing apparatus includes a depressed part supporting part that contacts with and supports the depressed part, and is driven by a driving mechanism An axial-direction length L | 12-24-2015 |
20150367398 | PRESS FORMING METHOD - A press forming apparatus ( | 12-24-2015 |
20150367397 | PRESS-FORMING METHOD - A press-forming method which press-forms a final shaped article which comprises a top sheet part, vertical wall parts, and flange parts and which has at least one bent part in a longitudinal direction, which method forms the top sheet part, vertical wall parts, bent part, and flange parts, includes a first shaping process of bending a flange part at an intersecting part until an angle of the flange part with a horizontal line becomes α | 12-24-2015 |
20150367392 | MANUFACTURING METHOD OF PRESS-FORMED MEMBER AND PRESS FORMING APPARATUS - In a press forming step of obtaining, from a blank ( | 12-24-2015 |
20150362253 | MONOLITHIC REFRACTORY STRUCTURE - A monolithic refractory structure includes: a monolithic refractory; a support body which supports the monolithic refractory; and a heat-resistant fiber support material which is buried in the monolithic refractory in a state of being connected to a support surface of the support body. The heat-resistant fiber support material includes a heat-resistant fiber rope which is formed of an inorganic fiber and extends along an X-axis direction perpendicular to the support surface, and a ratio L1/L2 of an X-axis direction length L1 of the heat-resistant fiber rope to an X-axis direction length L2 of the monolithic refractory is 0.35 or more and 0.95 or less. | 12-17-2015 |
20150361664 | H-SECTION STEEL AND METHOD OF PRODUCING THE SAME - An H-section steel has a predetermined chemical composition, an Nb content and a B content satisfy Nb+125×B≧0.075%, a thickness of a flange is 12 mm to 40 mm, and in a thickness center portion and ¼ flange width portion of the flange, a metallographic structure of a cross-section perpendicular to a rolling direction contains pearlite having a distribution density of 3.2×10 | 12-17-2015 |
20150361585 | METHOD FOR MANUFACTURING SIC SINGLE-CRYSTAL SUBSTRATE FOR EPITAXIAL SIC WAFER, AND SIC SINGLE-CRYSTAL SUBSTRATE FOR EPITAXIAL SIC WAFER - Provided is a method for manufacturing an SiC single-crystal substrate making it possible to obtain an epitaxial SiC wafer provided with a high-quality SiC single-crystal thin film devoid of surface defects, etc. Also provided is said SiC single-crystal substrate. A method for manufacturing an SiC single-crystal substrate for an epitaxial SiC wafer having a high-quality SiC single-crystal thin film devoid of surface defects, etc., wherein the surface of the SiC single-crystal substrate is polished using chemical-mechanical polishing (CMP) at a speed of no more than 100 nm/h to remove the surface in a thickness of 100 nm or greater, and produce no more than 1 approximately circular pit per cm | 12-17-2015 |
20150360327 | FLUX-CORED WIRE, WELDING METHOD USING FLUX-CORED WIRE, METHOD FOR MANUFACTURING WELD JOINT USING FLUX-CORED WIRE, AND WELD JOINT - In a flux-cored wire according to the present invention, CaF | 12-17-2015 |
20150352522 | CARBON MATERIAL FOR CATALYST SUPPORT USE - A carbon material for catalyst support use which, when used as a catalyst support, maintains a high porosity while being stable chemically, having electrical conductivity, being excellent in durability, and being excellent in diffusibility of the reaction starting materials and reaction products is provided. It is characterized by comprising dendritic carbon mesoporous structures which have 3D structures of branched carbon-containing rod shapes or carbon-containing ring shapes, having a pore size of 1 to 20 nm and a cumulative pore volume of 0.2 to 1.5 cc/g found by analyzing a nitrogen adsorption isotherm by the Dollimore-Heal method, and having a powder X-ray diffraction spectrum which has a peak corresponding to a 002 diffraction line of graphite between diffraction angles (2θ: degrees) of 20 to 30 degrees and has a peak with a half value width of 0.1 degree to 1.0 degree at 25.5 to 26.5 degrees. | 12-10-2015 |
20150336619 | PRESS COMPONENT AND METHOD AND DEVICE FOR MANUFACTURING SAME - The top plate section of the metal stock is pressed and clamped against a punch by a pad, a portion that will be at the outside of the L shaped curve is pressed and camped against a die by a blank holder, a bender is moved, and a vertical wall portion at the inside of the L shaped curved of the metal stock sheet and the flange portion joined to the vertical wall at the inside of the L shaped curve are molded. The metal stock sheet is moved in the direction toward the blank holder while the metal stock sheet being pressed and clamped, and a vertical wall portion at the outside of the L shaped curve of the L shaped hat shaped cross-section and the flange portion joined to the vertical wall at the outside of the L shaped curve are molded. | 11-26-2015 |
20150336152 | PRESS-FORMING METHOD - A press-forming method includes: a step of forming a first cup-shaped workpiece (B); a step of moving an axial pressing punch ( | 11-26-2015 |
20150330881 | ANALYZING METHOD OF SPOT WELDED PORTION, ANALYZING PROGRAM OF SPOT WELDED PORTION, RECORDING MEDIUM AND ANALYZING APPARATUS OF SPOT WELDED PORTION - An analyzing method of a spot welded portion, includes: acquiring bar elements as the spot welded portion; extracting other bar elements existing at a periphery of a target bar element which is targeted among the acquired bar elements; determining whether or not there is a bar element which shares the same end point with the target bar element among the extracted bar elements; determining that the target bar element and the bar element which shares the same end point with the target bar element are a three-layer spot welded portion when it is determined that there is the bar element which shares the same end point with the target bar element; and determining whether or not there is a bar element whose distance between elements with the target bar element is within a predetermined distance among the extracted bar elements when it is determined that there is not the bar element which shares the same end point with the target bar element, and determining that the target bar element and the extracted bar element are not the three-layer spot welded portion when it is determined that there is not the bar element within the predetermined distance. | 11-19-2015 |
20150329950 | HIGH-STRENGTH HOT-ROLLED STEEL SHEET HAVING EXCELLENT BAKING HARDENABILITY AND LOW TEMPERATURE TOUGHNESS WITH MAXIMUM TENSILE STRENGTH OF 980 MPA OR MORE - Provided is a high-strength hot-rolled steel sheet consisting of, in mass %, C: 0.01% to 0.2%, Si: 0% to 2.5%, Mn: 0% to 4.0%, Al: 0% to 2.0%, N: 0% to 0.01%, Cu: 0% to 2.0%, Ni: 0% to 2.0%, Mo: 0% to 1.0%, V: 0% to 0.3%, Cr: 0% to 2.0%, Mg: 0% to 0.01%, Ca: 0% to 0.01%, REM: 0% to 0.1%, B: 0% to 0.01%, P: less than or equal to 0.10%, S: less than or equal to 0.03%, O: less than or equal to 0.01%, one or both of Ti and Nb: 0.01% to 0.30% in total, and the balance being Fe and inevitable impurities. The steel sheet has a structure in which a total volume fraction of tempered martensite or lower bainite is 90% or more, a dislocation density thereof is greater than or equal to 5×10 | 11-19-2015 |
20150329946 | GALVANNEALED STEEL SHEET AND METHOD OF MANUFACTURING THE SAME - A galvannealed steel sheet includes: a steel sheet; a coating layer on a surface of the steel sheet; and a mixed layer formed between the steel sheet and the coating layer, in which the mixed layer includes a base iron portion having fine grains having a size of greater than 0 μm and equal to or smaller than 2 μm, a Zn—Fe alloy phase, and oxides containing one or more types of Mn, Si, Al, and Cr, and in the mixed layer, the oxides and the Zn—Fe alloy phase are present in grain boundaries that form the fine grains and the Zn—Fe alloy phase is tangled with the base iron portion. | 11-19-2015 |
20150329180 | FLOATING BODY STRUCTURE - The floating body structure is a floating body structure that supports an object to be supported so that the object to be supported floats in the sea, including a floating body section connected to a base end portion of the object to be supported, wherein the floating body section has a lid body made of steel, an outer pipe made of steel, and an inner pipe made of steel and provided inside the outer pipe, and the floating body section is hermetically sealed by the lid body in a state where at least a portion of a gap formed between an outer wall surface of the inner pipe and an inner wall surface of the outer pipe is filled with concrete or mortar. | 11-19-2015 |
20150325864 | TITANIUM OR TITANIUM ALLOY FOR FUEL CELL SEPARATOR HAVING HIGH CONTACT CONDUCTIVITY WITH CARBON AND HIGH DURABILITY, FUEL CELL SEPARATOR INCLUDING THE SAME, AND FUEL CELL - [Object] To increase contact conductivity with carbon and durability of a titanium or titanium alloy material for a fuel cell separator so as to increase the lifetime of a fuel cell. | 11-12-2015 |
20150318091 | LASER PROCESSING APPARATUS AND LASER IRRADIATION METHOD - A laser processing apparatus includes a laser irradiation unit has a structure providing an intensity distribution of the laser beam focused on the grain-oriented electrical steel sheet on a cross-section in a direction perpendicular to the scanning direction on the grain-oriented electrical steel sheet so as to satisfy Ib/Ia≦2, where Ra | 11-05-2015 |
20150315683 | HOT-ROLLED STEEL SHEET AND METHOD FOR PRODUCING SAME - A hot-rolled steel sheet includes, as a chemical composition, by mass %, C: 0.030% to 0.10%, Mn: 0.5% to 2.5%, and Si+Al: 0.100% to 2.5%, in which the steel sheet has a microstructure including, by area fraction, ferrite: 80% or more, martensite: 3% to 15.0%, and pearlite: less than 3.0%, in which a number density of martensite having an equivalent circle diameter of 3 μm or more at a position which is at a depth of ¼ of the steel sheet thickness from the surface of the steel sheet, is 5.0 pieces/10000 μm | 11-05-2015 |
20150314568 | GALVANIZED STEEL SHEET FOR HOT FORMING - A galvanized steel sheet for hot forming, the galvanized steel sheet including a galvanized film provided on a surface of a steel sheet,
| 11-05-2015 |
20150314357 | PRESS FORMING METHOD - An inner punch ( | 11-05-2015 |
20150314345 | STEEL SHEET PILE AND METHOD FOR MANUFACTURING THE SAME - In a steel sheet pile according to the present invention, a carbon equivalent CE | 11-05-2015 |
20150310143 | DEFORMATION ANALYSIS DEVICE, DEFORMATION ANALYSIS METHOD, AND PROGRAM - The deformation analysis device includes: a storage unit ( | 10-29-2015 |
20150306646 | MANUFACTURING METHOD AND MANUFACTURING APPARATUS OF SEAMLESS METAL PIPE - A manufacturing method of a seamless metal pipe includes determining whether a preceding-stage stand group is used in outer diameter reduction or in thickness reduction of a hollow shell; and performing elongating on the hollow shell, into which a mandrel bar is inserted, based on the determination. In addition, in the elongating, when the preceding-stage stand group is used in the outer diameter reduction, the hollow shell is rolled in a state where an inner surface of the hollow shell does not come into contact with the mandrel bar in the preceding-stage stand group, and the hollow shell is rolled in a state where the inner surface of the hollow shell comes into contact with the mandrel bar in the succeeding-stage stand group. | 10-29-2015 |
20150301297 | DEFORMED STEEL WIRE FOR PROTECTION TUBE OF SUBMARINE CABLE, METHOD FOR MANUFACTURING SAME, AND PRESSURE-RESISTANT LAYER - There is provided a deformed steel wire includes, as a chemical component, by mass %; C: 0.30% to 1.10%, Si: 0.10% to 1.50%, and Mn: 0.20% to 1.50%, and the balance consists of Fe and unavoidable impurities, in which a metallographic structure is a ferrite-pearlite structure or a pearlite structure, integration degrees of a crystal orientation <110> in a longitudinal direction of a thickness center area and a surface area are in a range of 2.0 to 4.0, an absolute value of a difference in the integration degree between an inner surface and an outer surface of the surface area is 0.3 or less, an integration degree of a crystal orientation <100> in a thickness direction of the thickness center area is in a range of 1.2 to 3.8, and a dimensional accuracy index is in a range of 0.5 to 2.0. | 10-22-2015 |
20150298197 | PRESS-FORMING TOOL AND METHOD FOR MANUFACTURING PRESS-FORMED PRODUCT - A press-forming tool comprising: a punch including a punch portion and a plate portion transferring shape to a blank material; a die paired with the punch and opposes the punch portion; a wrinkle suppression mold including a first surface opposing the plate portion and comes into contact with the plate portion at a press-forming ending point, a second surface opposing the die and holds the blank material along with the die, and a third surface continued between the first and second surface and opposes the punch portion, and disposed between the third surface and the punch portion via a gap; a pressure receiving portion including a groove portion on the first surface of the wrinkle suppression mold; and a wrinkle suppression force increasing portion disposed on a surface opposing the first surface of the plate portion, protrudes toward the pressure receiving portion, and generates a reaction force opposed to a pressing direction when pressed in the pressing direction in end-phase of a press-forming. | 10-22-2015 |
20150290618 | POROUS POLYMER METAL COMPLEX, GAS ADSORBENT, AND GAS SEPARATION DEVICE AND GAS STORAGE DEVICE USING SAME - An object of the present invention is to provide a porous polymer metal complex which can be used as a gas adsorbent and contains two or more types of similar ligands. A porous polymer metal complex is provided expressed by [CuX] | 10-15-2015 |
20150284819 | STEEL SHEET FOR HOT STAMPING, METHOD OF MANUFACTURING THE SAME, AND HOT STAMPED STEEL SHEET MEMBER - A steel sheet for hot stamping includes a predetermined chemical composition containing: C: 0.08% or more and less than 0.20%; Si: 0.003% to 0.2%; Mn: 1.6% to 3.5%, and others, and further includes a steel structure expressed by, in an area ratio: bainite: 1% to 95%; ferrite: 5% to 94%; and balance: one or more selected from the group consisting of pearlite, martensite and retained austenite. When an Mn content is represented by [Mn], a C content is represented by [C], an expression of “[Mn]+6.67×[C]−2.73≧0” is satisfied. | 10-08-2015 |
20150284818 | HOT-ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME - A hot-rolled steel sheet having a tensile strength of 900 MPa or more, the hot-rolled steel sheet consisting of, in mass %, C: greater than 0.050% and less than or equal to 0.10%, Si: greater than or equal to 0.1% and less than or equal to 2.0%, Mn: greater than or equal to 1.0% and less than or equal to 3.0%, P: less than or equal to 0.1%, S: less than or equal to 0.01%, Al: greater than or equal to 0.005% and less than or equal to 0.05%, N: less than or equal to 0.01%, Ti: greater than or equal to 0.10% and less than or equal to 0.20%, Nb: greater than or equal to 0% and less than or equal to 0.06%, B: greater than or equal to 0% and less than or equal to 0.03%, Ca: greater than or equal to 0% and less than or equal to 0.005%, and the balance: Fe and impurities. An average crystal grain size is less than or equal to 7.0 μm, and an X-ray random intensity ratio in {211} <011> orientation that is parallel to a rolled surface and a rolling direction is less than or equal to 2.5. | 10-08-2015 |
20150280251 | TITANIUM MATERIAL OR TITANIUM ALLOY MATERIAL FOR FUEL CELL SEPARATOR HAVING HIGH CONTACT CONDUCTIVITY WITH CARBON AND HIGH DURABILITY, FUEL CELL SEPARATOR INCLUDING THE SAME, AND FUEL CELL - [Object] To increase contact conductivity with carbon and durability of a titanium or titanium alloy material for a fuel cell separator so as to increase the lifetime of a fuel cell. [Solution] Provided is a titanium or titanium alloy material for a fuel cell separator having a surface shape in which a plurality of projections are distributed, and a titanium oxide film on a surface of the projections. Fine projections are assumed to increase the contact conductivity remarkably. The present invention has high usability in the cell manufacturing industry. | 10-01-2015 |
20150279531 | NON-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREOF - A non-oriented electrical steel sheet comprising, Si: not less than 1.0 mass % nor more than 3.5 mass %, Al: not less than 0.1 mass % nor more than 3.0 mass %, Ti: not less than 0.001 mass % nor more than 0.01 mass %, Bi: not less than 0.001 mass % nor more than 0.01 mass %, wherein Expression (1) is satisfied when a Ti content (mass %) is represented as [Ti] and a Bi content (mass %) is represented as [Bi]: [Ti]≦0.8×[Bi]+0.002 . . . (1). | 10-01-2015 |
20150275345 | ALLOYED HOT-DIP GALVANIZED STEEL SHEET AND METHOD OF MANUFACTURING THE SAME - Provided is an alloyed hot-dip galvanized steel sheet including a base steel sheet, the base steel sheet containing a given amount of C, Si, Mn, and other elements. The alloyed hot-dip galvanized steel sheet is provided with an alloyed hot-dip galvanized layer on a surface of the base steel sheet, the alloyed hot-dip galvanized layer containing, in mass %, Fe: more than or equal to 5% and less than or equal to 15%, and having a thickness of more than or equal to 3 μm and less than or equal to 30 μm. The alloyed hot-dip galvanized steel sheet includes an A layer immediately under the surface of the base steel sheet, the A layer being formed in the base steel sheet and having a thickness of more than or equal to 2 μm and less than or equal to 20 μm from the surface of the base steel sheet, containing more than or equal to 50 vol % of a ferrite structure, and containing more than or equal to 90 mass % of unoxidized Fe, less than or equal to 10 mass % of a total of contents of oxides of Fe, Si, Mn, P, S, and Al, and less than 0.05 mass % of C. | 10-01-2015 |
20150267319 | SILICON CARBIDE SINGLE CRYSTAL SUBSTRATE AND PROCESS FOR PRODUCING SAME - Provided are: a silicon carbide single crystal substrate which is cut out from a silicon carbide bulk single crystal grown by the Physical Vapor Transport method; and a process for producing the same. The number of screw dislocations in one of the semicircle areas of the substrate is smaller than that in the other thereof, namely, the number of screw dislocations in a given area of the substrate is reduced. The semicircle areas of the substrate correspond respectively to the halves of the substrate. The present invention pertains to: a silicon carbide single crystal substrate which is cut out from a silicon carbide bulk single crystal grown by the Physical Vapor Transport method and which is characterized in that the average value of the screw-dislocation densities observed at multiple measurement points in one of the semicircle areas, which correspond respectively to the halves of the substrate, is 80% or less of the average value of screw-dislocation densities observed at multiple measurement points in the other of the semicircle areas; and a process for producing the same. | 09-24-2015 |
20150258591 | PLUG FOR HOT TUBE-MAKING - A plug for hot tube-making includes: a plug main body; a build-up layer formed around an axis of the plug main body on a surface of the plug, main body, and a sprayed coating formed on a surface of the build-up layer. | 09-17-2015 |
20150251234 | METHOD FOR MANUFACTURING SHAPED STEEL THE CROSS-SECTIONAL SHAPE OF WHICH CHANGES IN THE LONGITUDINAL DIRECTION, AND ROLL FORMING DEVICE - A roll forming device, for roll forming for the purpose of manufacturing shaped steel the cross-sectional shape of which varies in the longitudinal direction, is equipped with: first die rolls having an annular ridge part the cross-sectional shape of which varies in the circumferential direction; second die rolls having an annular groove part the cross-sectional shape of which varies in the circumferential direction; and a drive device for the first die rolls and the second die rolls. A gap is provided at the side surfaces of the annular ridge part of the first die rolls, across the entire circumference in the circumferential direction, such that the gap with respect to the side surfaces of the annual groove parts of the second die rolls widens inward in the radial direction. | 09-10-2015 |
20150247060 | PROCESS FOR PREPARING A STABLE AQUEOUS DISPERSION OF POLYAMIDE-IMIDE WHICH IS FREE OF CARCINOGENIC, MUTAGENIC OR REPROTOXIC SUBSTANCES, AND APPLICATION TO COATINGS - The invention concerns a process for preparing an aqueous polyamide-imide dispersion, characterized in that it comprises at least one step of selecting a polyamide-imide powder and a step of producing a dispersion comprising the polyamide-imide powder, a polar aprotic solvent with a boiling point of more than 180° C. at 760 mm Hg, and water. The invention also concerns a process for producing a dry polyamide-imide film on a substrate. | 09-03-2015 |
20150243986 | ELECTRODE ACTIVE MATERIAL, METHOD FOR PRODUCING ELECTRODE ACTIVE MATERIAL, ELECTRODE, BATTERY, AND METHOD FOR USING CLATHRATE COMPOUND - Provided is an electrode active material containing a clathrate compound that is more likely to withstand load involved in repetition of penetration and desorption of, e.g., lithium ions compared to no guest substance-encapsulating silicon clathrate compounds. An electrode active material according to the present invention includes a clathrate compound. The clathrate compound contains a crystal lattice and a guest substance. The guest substance is encapsulated in the crystal lattice. It is preferable that the clathrate compound be a main component of the electrode active material. | 08-27-2015 |
20150240570 | SCREW JOINT FOR STEEL PIPE - In a screw joint for a steel pipe, a taper angle of a tapered surface of a pin is substantially the same as a taper angle of a tapered surface of a box. In addition, the pin and the box interfere with each other in a radial direction while a seal surface of the pin and a seal surface of the box contact each other in a process of make-up between a male screw portion and a female screw portion, and at least apart of the seal surface of the pin comes into close contact with at least a part of the seal surface of the box over the entire circumference. Moreover, a contact pressure amplification mechanism, which increases a contact pressure between the seal surface of the pin and the seal surface of the box at the completion of the make-up, is further provided. | 08-27-2015 |
20150240332 | TITANIUM ALLOY HAVING HIGH CORROSION RESISTANCE IN BROMINE-ION-CONTAINING ENVIRONMENT - To provide a titanium alloy having corrosion resistance that is as high as or higher than before, and high corrosion resistance in a bromine-ion-containing environment, the alloy being able to be manufactured at low cost. | 08-27-2015 |
20150240119 | PROCESS FOR PRODUCING A DRY POLYAMIDE-IMIDE FILM WITH HIGH GALLING RESISTANCE ON A THREADED TUBULAR COMPONENT FROM AN AQUEOUS DISPERSION WHICH IS FREE OF CARCINOGENIC SUBSTANCES - The invention concerns a process for producing a dry film with a high galling resistance on a threaded element for drilling and/or operating a hydrocarbon well, characterized in that it comprises at least the following steps: forming a stable dispersion comprising a polyamide-imide powder, a polar aprotic solvent with a boiling point of more than 180° C. at 760 mm Hg, and water; applying the dispersion to one of the ends ( | 08-27-2015 |
20150239029 | PRESS-WORK METHOD AND BOTTOMED CONTAINER - A press mold includes an inner punch ( | 08-27-2015 |
20150232977 | GALVANNEALED STEEL SHEET AND METHOD FOR PRODUCING SAME - A galvannealed steel sheet includes: a scale-removed rolled steel sheet; and a galvannealed layer arranged on the scale-removed rolled steel sheet. When ten measurement points of the galvannealed steel sheet are set in a transverse direction by equally dividing a line-segment having a reference length of 50 mm by 10, a minimum P content of the galvannealed layer in the ten measurement points is 50% or more as compared with a maximum P content therein. | 08-20-2015 |
20150231688 | PRESS-FORMING METHOD - While a compression part (B | 08-20-2015 |
20150226610 | SURFACE TEMPERATURE MEASURING APPARATUS AND SURFACE TEMPERATURE MEASURING METHOD - To provide a surface temperature measuring apparatus that is capable of accurately measuring a surface temperature of a temperature measurement target material such as a steel material (e.g., a wheel, a steel pipe, a steel sheet, or a rail) in a cooling process with water, and a method of measuring the same. | 08-13-2015 |
20150226463 | MULTIPLEX PIPE AND SYSTEM FOR RECOVERING STEAM FROM GEOTHERMAL WELLS - Provided is a multiplex pipe and a system for recovering steam from a geothermal well, which are capable of solving all of the various problems with a neutralization pipe prepared by painting or the like of an alkali-resistant coating on the inner face of an acid-resistant single pipe. A multiplex pipe | 08-13-2015 |
20150225829 | HOT-DIP GALVANIZED STEEL SHEET AND MANUFACTURING METHOD OF THE SAME - The present invention provides a hot-dip galvanized steel sheet that is excellent in plating wettability and plating adhesiveness even when a base steel sheet contains Si and Mn, and a manufacturing method of the same. The hot-dip galvanized steel sheet according to the present invention includes a base steel sheet containing Si, Mn, and other predetermined components, and a hot-dip galvanizing layer formed on at least one surface of the base steel sheet. In the base steel sheet, a value of H | 08-13-2015 |
20150225821 | STEEL SHEET - In a steel sheet, a cleanliness of a metal structure is 0.08% or less, a which is an Mn segregation degree is 1.6 or less, and a difference ΔHv between a low strain formed portion that undergoes a plastic strain of 5% or less and a high strain formed portion that undergoes a plastic strain of 20% or higher in a hot forming in average hardness after the hot forming is 40 or less. | 08-13-2015 |
20150224563 | METHOD FOR PRODUCING CURVED PART, AND SKELETON STRUCTURE MEMBER OF BODY SHELL OF AUTOMOBILE - A curved part | 08-13-2015 |
20150219249 | ELECTRIC RESISTANCE WELDED STEEL PIPE - An electric resistance welded steel pipe which has sufficient strength and low-temperature toughness and a low yield ratio and which is suitable as a line pipe to be laid in depths of the sea, characterized in that: the composition of the base material contains, in mass %, 0.05 to 0.10% of C, 1.00 to 1.60% of Mn, and 0.005 to less than 0.035% of Nb, and has a Ceq value of 0.23 to 0.38; and the metal microstructure of the base material contains 3 to 13% of martensite in area fraction with the balance being ferrite. | 08-06-2015 |
20150218708 | HOT ROLLED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME - A hot rolled steel sheet consisting of, in mass %, C: 0.05% to 0.15%, Si: 0% to 0.2%, Al: 0.5% to 3.0%, Mn: 1.2% to 2.5%, P: 0.1% or less, S: 0.01% or less, N: 0.007% or less, Ti: 0.03% to 0.10%, Nb: 0.008% to 0.06%, V: 0% to 0.12%, one or more of Cr, Cu, Ni, and Mo: 0% to 2.0% in total, B: 0% to 0.005%, one or more of Ca, Mg, La, and Ce: 0% to 0.01% in total, total amount of Si and Al: 0.8×(Mn−1)% or more, total amount of Ti and Nb: 0.04% to 0.14%, and the balance: Fe and impurities. In a structure of steel, a total area ratio of martensite and retained austenite is 3% to 20%, an area ratio of ferrite is 50% to 96%, and an area ratio of pearlite is 3% or less. In a superficial layer part, the thickness in a sheet thickness direction of a region in which a network-like oxide is present is less than 0.5 μm, and a maximum tensile strength is 720 MPa or more. | 08-06-2015 |
20150218706 | PRODUCTION METHOD OF GALVANNEALED STEEL SHEET HAVING EXCELLENT FORMABILITY AND EXFOLIATION RESISTANCE AFTER ADHESION - The production method of the galvannealed steel sheet includes: performing a hot dip galvanization on a steel sheet; performing an alloying and forming a galvannealed layer; performing a skin pass rolling at an elongation ratio of 0.3% or more; applying a treatment liquid on a surface of the galvannealed layer using a roll coater, and allowing the treatment liquid to react with the surface immediately after the application to form a mixed layer; in the forming the mixed layer: a first applied part is formed in the mixed layer using the protrusions of the roll coater; and a second applied part is formed in the mixed layer using the recesses of the roll coater; the second applied part having an attached amount of P of 20 mg/m | 08-06-2015 |
20150217398 | ELECTRIC RESISTANCE WELDED PIPE WELDING APPARATUS - An apparatus for manufacturing electric resistance welded pipe, in which two across-opening-facing end parts (2 | 08-06-2015 |
20150217396 | OVERLAP-WELDED MEMBER, AUTOMOBILE PART, METHOD OF WELDING OVERLAPPED PORTION, AND METHOD OF MANUFACTURING OVERLAP-WELDED MEMBER - The present invention provides an overlap-welded member in which an overlapped portion including plural steel sheet members is joined at a spot-welded portion, in which at least one of the plural steel sheet members contains martensite, and the spot-welded portion includes: a nugget formed through spot welding; a heat-affected zone formed in the vicinity of the nugget; the softest zone having the lowest Vickers hardness in the heat-affected zone; and a tempered area formed between a central portion of the nugget and the softest zone and made out of tempered martensite having Vickers hardness of not more than 120% in the case where Vickers hardness of the softest zone is 100%. | 08-06-2015 |
20150210888 | COMPOSITION FOR SOLID COATING FORMATION AND TUBULAR THREADED JOINT - A composition for solid coating formation, includes a composition made by containing, in a mixed solvent including water and a dipolar aprotic solvent, a powdery organic resin which is partially soluble at least in the dipolar aprotic solvent. The powdery organic resin is present in a state of being dissolved or dispersed in the mixed solvent. | 07-30-2015 |
20150204071 | H-SECTION STEEL AND METHOD FOR PRODUCING THE SAME - There is provided an H-section steel in which a number density of oxide particles having an equivalent circle diameter of 0.005 μm to 2.0 μm per unit area is 100 pieces/mm | 07-23-2015 |
20150203949 | DUAL PHASE STEEL SHEET AND MANUFACTURING METHOD THEREOF - A dual phase steel sheet including: in mass %, C: 0.01 to 0.1%; Mn: 0.2 to 3%; Al: 0.04 to 1.5%; Ti: 0.015 to 0.2%; P: 0.01% or less; S: 0.005% or less; N: 0.01% or less, in which [Ti]−48/14×[N]−48/32×[S]≧0% is satisfied and when Ex.C (%)=[C]−12/48×{[Ti]+48/93×[Nb]−48/14×[N]−48/32×[S]} is set, 0.001≦Ex.C (%)/fsd (%)≦0.01 is satisfied, and a balance being composed of Fe and impurities, in which at the position of ¼ thickness of a sheet thickness, a microstructure is a dual phase with its main phase composed of polygonal ferrite precipitation-strengthened by carbide of Ti and its second phase composed of 1 to 10% in area fraction (fsd (%)) of low-temperature transformation products dispersed plurally, and an average crystal diameter of the low-temperature transformation product is 3 to 15 μm and an average value of a distance of closest approach between the low-temperature transformation products is 10 to 20 μm. | 07-23-2015 |
20150203948 | COLD ROLLED STEEL SHEET, ELECTROGALVANIZED COLD-ROLLED STEEL SHEET, HOT-DIP GALVANIZED COLD-ROLLED STEEL SHEET, ALLOYED HOT-DIP GALVANIZED COLD ROLLED STEEL SHEET, AND MANUFACTURING METHODS OF THE SAME - A cold-rolled steel sheet containing: in mass %, C: 0.0005 to 0.0045%; Mn: 0.80 to 2.50%; Ti: 0.002 to 0.150%; B: 0.0005 to 0.01%, in which (1) Expression is satisfied, and a balance being composed of iron and impurities, in which at the position of ¼ thickness of a sheet thickness, a random intensity ratio (A) of the {332}<110> orientation is 3 or less, a random intensity ratio (B) of the {557}<9 16 5> orientation and a random intensity ratio (C) of the {111}<112> orientation are both 7 or more, and {(B)/(A) 5} and {(B)>(C)} are satisfied. | 07-23-2015 |
20150197836 | FE-BASED METAL SHEET AND MANUFACTURING METHOD THEREOF - A cast slab containing C: less than 0.02 mass % and made of an Fe-based metal of an α-γ transforming component is subjected to hot rolling at a temperature of an A3 point or higher and is subjected to α-region rolling at a temperature of 300° C. or higher and lower than the A3 point, and thereby a base metal sheet having a {100} texture in a surface layer portion is fabricated. Then, by performing a heat treatment under predetermined conditions, an Fe-based metal sheet is obtained in which a Z value is not less than 2.0 nor more than 200 when intensity ratios of respective {001}<470>, {116}<6 12 1>, and {223}<692> directions in a sheet plane by X-ray diffraction are set to A, B, and C respectively and Z=(A+0.97B)/0.98C is satisfied. | 07-16-2015 |
20150197835 | FE-BASED METAL SHEET AND MANUFACTURING METHOD THEREOF - A cast slab containing C: less than 0.02 mass % and made of an Fe-based metal of an α-γ transforming component is subjected to hot rolling at a temperature of an A3 point or higher and is subjected to α-region rolling at a temperature of 300° C. or higher and lower than the A3 point, and thereby a base metal sheet having a {100} texture in a surface layer portion is fabricated. Then, by performing a heat treatment under predetermined conditions, an Fe-based metal sheet is obtained in which a Z value is not less than 2.0 nor more than 200 when intensity ratios of respective {001}<470>, {116}<6 12 1>, and {223}<692> directions in a sheet plane by X-ray diffraction are set to A, B, and C respectively and Z=(A+0.97B)/0.98C is satisfied. | 07-16-2015 |
20150192056 | TITANIUM SHEET COVERED WITH PROTECTIVE FILM SUPERIOR IN HIGH TEMPERATURE OXIDATION RESISTANCE AND HIGH TEMPERATURE SALT DAMAGE RESISTANCE, AUTOMOBILE EXHAUST SYSTEM USING SAME, AND METHODS OF PRODUCTION OF SAME - The present invention provides a titanium sheet covered with a protective film superior in high temperature oxidation resistance and high temperature salt damage resistance and a method of production of the same and an automobile exhaust system using the same. The titanium sheet covered with a protective film is formed on its surface with a protective film of a thickness of 1 to 100 μm where flake-shaped metal Al with an average thickness of 0.1 to 5 μm and average width or average length of 1 to 50 μm or grain-shaped metal Al with an average size of 0.1 to 30 μm is dispersed in 20 to 60 mass % silicone resin or silicone grease and comprised of Si: 15 to 55 mass % and C: 10 to 45 mass % and having a balance of unavoidable impurities. Preferably the titanium sheet of the substrate contains one or both of 0.5 to 2.1 mass % of Cu and 0.4 to 2.5 mass % of Al. The method of production is to brush or spray the above composition of a silicone resin on a titanium sheet to form a protective film and heat it at 150 to 300° C. for 5 to 60 minutes. | 07-09-2015 |
20150191674 | TUBULAR THREADED JOINT AND LUBRICATING COATING FORMING COMPOSITION FOR USE THEREIN - Provided is a composition for forming a lubricating coating to a tubular threaded joint. The composition contains a melamine cyanurate, a basic metal salt of an aromatic organic acid, and one or more kinds selected from the group consisting of a pine resin-based material, a wax, a metal soap, and a lubricating powder. | 07-09-2015 |
20150191670 | POWDER LUBRICANT COMPOSITION AND METHOD FOR MANUFACTURING SEAMLESS STEEL PIPE - A powder lubricant composition according to the present invention includes 65 parts by mass to 95 parts by mass of sodium borate, and 5 parts by mass to 35 parts by mass of cryolite. A method for manufacturing a seamless steel pipe according to the present invention includes adhering the above-described powder lubricant composition to a pipe inner surface of a work piece which is piercing rolled to have a tubular shape, and elongation rolling on the work piece after the adhering of the powder lubricant composition. | 07-09-2015 |
20150184276 | METHOD FOR PRODUCING PLUG FOR PIERCING-ROLLING - A method for producing a plug for use in a piercing-rolling mill for producing a seamless steel tube/pipe includes a step of carrying out shotblasting on a surface of the plug, and an arc-spraying step of performing arc-spraying of a spray wire to form a film on a surface of a base metal of the plug to which the shotblasting is applied. In the arc-spraying step, arc-spraying uses a cored wire whose iron sheath tube is filled with at least low-thermal conductive particles like ZrO | 07-02-2015 |
20150175208 | VEHICLE FRAME MEMBER STRUCTURE WITH EXCELLENT IMPACT RESISTANCE PERFORMANCE - A vehicle frame member structure has a closed cross-sectional structure including a pair of first wall portions, and a pair of second wall portions connected to the pair of the first wall portions, in which first beads are provided on the pair of first wall portions along a circumferential direction of the closed cross-sectional structure, a second bead is provided on either of the pair of second wall portions along the closed cross-sectional circumferential direction on a line extending from the first bead in the circumferential direction, the first and second beads are connected in two corner portions between the first wall portions and the second wall portion, a recessed embossed portion is provided in a connection portion of the first and second beads in at least one of the corner portions, and the sheet thickness of the embossed portion is larger than that of the first or second wall portion. | 06-25-2015 |
20150174702 | METHOD OF WELDING OVERLAPPED PORTION, METHOD OF MANUFACTURING OVERLAP-WELDED MEMBER, OVERLAP-WELDED MEMBER, AND AUTOMOTIVE PART - A method of welding an overlapped portion according to the present invention in which a plurality of steel sheet members are joined at an overlapped portion, and at least one of the plurality of steel sheet members contains martensite, includes: forming a spot-welded portion having a nugget in the overlapped portion; and emitting a laser beam to form a melted and solidified portion crossing an end of the nugget and located between the nugget and a position externally spaced apart from an end of the nugget by not less than 3 mm, this melted and solidified portion being formed in the steel sheet member containing the martensite so as to have a depth of not less than 50% of the thickness of the steel sheet member containing the martensite at a position externally spaced apart from the end of the nugget by 1 mm. | 06-25-2015 |
20150174690 | SPOT WELDING METHOD OF HIGH-STRENGTH STEEL SHEETS EXCELLENT IN JOINT STRENGTH - When two high-strength steel sheets ( | 06-25-2015 |
20150174634 | MANUFACTURING METHOD AND MANUFACTURING APPARATUS OF PRESS-FORMED BODY - A press-formed body ( | 06-25-2015 |
20150158079 | ELECTROMAGNETIC STIRRER AND CONTINUOUS CASTING METHOD - The present invention provides an electromagnetic stirrer uniformly applying an electromagnetic force to each casting mold. The electromagnetic stirrer of the present invention includes a pair of electromagnetic coils including a casting mold(s) between them, wherein an inner winding is applied to outside of each of two of tooth provided to a core of each of the pair of electromagnetic coils, an outer winding is applied to outside of the inner windings, ways of applying current to be applied to the windings are changed depending on the distance of the electromagnetic coils, and the number of the casting molds n, the external size φ, and the width of each of the electromagnetic coils W are defined as n×φ06-11-2015 | |
20150152538 | TITANIUM THIN SHEET - A titanium thin sheet of 0.2 mm or less in thickness, containing: Fe of 0.1 mass % or less and O (oxygen) of 0.1 mass % or less in a bulk, wherein a sheet thickness (mm)/a grain size (mm) ≧3, and the grain size ≧2.5 μm are satisfied, and a hardened layer is included at a surface, and a region of the hardened layer is a depth of 200 nm or more and 2 μm or less from the surface. The titanium thin sheet is supplied with excellent workability and high surface hardness, and is able to be suitably used for various purposes such as, for example, acoustic components (a speaker vibration plate and so on). | 06-04-2015 |
20150147678 | TITANIUM OR TITANIUM ALLOY MATERIAL FOR FUEL CELL SEPARATOR HAVING HIGH CONTACT CONDUCTIVITY WITH CARBON AND HIGH DURABILITY, FUEL CELL SEPARATOR INCLUDING THE SAME, AND MANUFACTURING METHOD THEREFOR - [Object] To provide a titanium or titanium alloy material for a separator of a polymer electrolyte fuel cell having high contact conductivity with carbon and high durability. | 05-28-2015 |
20150147224 | STEEL FOR WHEEL - A steel for wheel contains, in mass %, C: 0.65 to 0.84%, Si: 0.4 to 1.0%, Mn: 0.50 to 1.40%, Cr: 0.02 to 0.13%, S: 0.04% or less and V: 0.02 to 0.12%, wherein Fn1 expressed by formula (1) is 32 to 43, and Fn2 expressed by formula (2) is 25 or less, the balance being Fe and impurities. P, Cu and Ni as impurities are P: 0.05% or less, Cu: 0.20% or less and Ni: 0.20% or less: | 05-28-2015 |
20150144228 | QUENCHED STEEL PIPE MEMBER, VEHICLE AXLE BEAM USING QUENCHED STEEL PIPE MEMBER, AND METHOD FOR MANUFACTURING QUENCHED STEEL PIPE MEMBER - A quenched steel pipe member is formed of a GI galvanized steel pipe, in a middle section in a longitudinal direction of the GI galvanized steel pipe, a cross-section perpendicular to the longitudinal direction has a substantially V shape including a contact section at which opposite parts of an inner circumferential surface of the GI galvanized steel pipe come into contact with each other, the contact section is bonded using a Fe—Zn alloy phase, and a micro Vickers hardness at a location 50 μm deep from a base material surface layer is 95% or more of a micro Vickers hardness at a location 200 μm deep from the base material surface layer. | 05-28-2015 |
20150140358 | HOT-DIP GALVANNEALED HOT-ROLLED STEEL SHEET AND PROCESS FOR PRODUCING SAME - In a high strength hot-dip galvannealed hot-rolled steel sheet that has an excellent hole expansibility suitable for a stretch flanging and preferably has a high yield ratio and a tensile strength of at least 650 MPa, a hot-rolled steel sheet used as a base material for plating has a chemical composition comprising: in mass %, C: from at least 0.01 and at most 0.20%; Si: at most 0.50%; Mn: from at least 0.01% to at most 1.30%; P: at most 0.05%; S: at most 0.01%; N: at most 0.01%; Al: at most 0.50%; and Ti: from at least 0.05% to at most 0.50%, and a steel structure consisting of a polygonal ferrite having at least 80 area % and the remainder containing one kind or two or more kinds selected from bainitic ferrite, bainite, pearlite, and cementite. | 05-21-2015 |
20150136864 | RAIL - A rail is provided in which in a range from a surface of a head of the rail to a depth of 30 mm, 95% or more of a structure is composed of a pearlite structure by area %, and in a range with a depth of 20 mm to 30 mm from the surface of the head of the rail, an average grain size of a pearlite block in a transverse section is 120 μm to 200 μm. | 05-21-2015 |
20150136590 | ELECTRO PLATING DEVICE - An electro plating device includes a pipe inside seal mechanism which occludes an inner channel of a steel pipe, a tubular insoluble electrode which is disposed in a pipe end so as to be opposite to a female screw, a plating solution feed mechanism which includes a plurality of nozzles which extend radially with a pipe axis of the steel pipe as a center, and a pipe end seal mechanism which accommodates the nozzles thereinside and is mounted to the pipe end, when viewed in the pipe axial direction, a tip of each of the nozzles is positioned between the female screw and the insoluble electrode, and each of the nozzles injects the plating solution toward a direction which intersects an extension direction of the nozzle, the direction being a rotational direction of a clockwise direction or a counterclockwise direction in which the pipe axis is the center. | 05-21-2015 |
20150121982 | MANUFACTURING METHOD OF SEAMLESS METAL PIPE, MANDREL MILL, AND AUXILIARY TOOL - A manufacturing method of a seamless metal pipe includes: preparing a plurality of mandrel bars in which lengths of work portions which come into contact with a hollow shell during elongating are different from one another; selecting a mandrel bar including a work portion having a length corresponding to the number of stands used in thickness reduction, among the plurality of mandrel bars; inserting the mandrel bar selected in the selecting into the hollow shell; and performing the elongating on the hollow shell into which the mandrel bar is inserted. Moreover, in the elongating, outer diameter reduction is performed by one of a preceding-stage stand group and a succeeding-stage stand group and the thickness reduction is performed by the other of the preceding-stage stand group and the succeeding-stage stand group, or the thickness reduction is performed by both of the preceding-stage stand group and the succeeding-stage stand group. | 05-07-2015 |
20150118518 | STEEL SHEET FOR ELECTROPLATING, ELECTROPLATED STEEL SHEET, AND METHODS FOR PRODUCING THE SAME - A steel sheet for electroplating includes, by mass %, C: 0.0005% to 0.0050%, Si: 0.20% to 1.0%, Mn: 0.40% to 2.5%, P: 0.05% or less, Ti: 0.010% to 0.050%, Nb: 0.010% to 0.040%, B: 0.0005% to 0.0030%, S: 0.02% or less, Al: 0.01% to 0.30%, N: 0.0010% to 0.01%, and the balance including Fe and impurities, in which when Si content is represented by [Si] and Mn content is represented by [Mn], “[Mn]+5[Si]” is 2.0 to 7.0, and the steel sheet has surface property in which an average of displacements of a measurement point obtained based on a moving average of continuous 31 points in total including 15 front points and 15 back points in a cross-sectional profile of a surface obtained by measuring the average of displacements in an evaluation length of 10 μm or more at an interval of 0.07 μm, is 0.005 μm to 0.10 μm. | 04-30-2015 |
20150117937 | FLUX-CORED WIRE FOR WELDING ULTRAHIGH TENSILE STRENGTH STEEL - In a flux-cored wire for welding an ultrahigh tensile strength steel, one or more of CaF | 04-30-2015 |
20150107724 | DUAL PHASE STAINLESS STEEL PIPE AND MANUFACTURING METHOD THEREOF - A dual phase stainless steel pipe includes tensile yield strength YS | 04-23-2015 |
20150101386 | WATER-BLOCKING APPARATUS AND WATER-BLOCKING METHOD FOR COOLING WATER FOR HOT-ROLLED STEEL SHEET - A water-blocking apparatus for cooling water for a hot-rolled steel sheet according to the present invention, which blocks cooling water sprayed onto a hot-rolled steel sheet at a sprayed water density of higher than 4 m | 04-16-2015 |
20150101383 | METHOD OF COLD-ROLLING STEEL SHEET AND COLD-ROLLING FACILITY - In cold-rolling a steel sheet coil, when a tail end portion of a steel sheet coil ( | 04-16-2015 |
20150098857 | STEEL MATERIAL - A steel material contains: by mass %, C: greater than 0.05% to 0.18%; Mn: 1% to 3%; Si: greater than 0.5% to 1.8%; Al: 0.01% to 0.5%; N: 0.001% to 0.015%; one or both of V and Ti: 0.01% to 0.3% in total; Cr: 0% to 0.25%; Mo: 0% to 0.35%; a balance: Fe and impurities; and 80% or more of bainite by area %, and 5% or more in total of one or two or more selected from a group consisting of ferrite, martensite and austenite by area %, in which an average block size of the above-described bainite is less than 2.0 μm, an average grain diameter of all of the above-described ferrite, martensite and austenite is less than 1.0 μm, an average nanohardness of the above-described bainite is 4.0 GPa to 5.0 GPa, and MX-type carbides each having a circle-equivalent diameter of 10 nm or more exist with an average grain spacing of 300 nm or less therebetween. | 04-09-2015 |
20150090697 | ELECTRIC RESISTANCE WELDING OPERATION MANAGEMENT DEVICE, ELECTRIC RESISTANCE WELDING OPERATION MANAGEMENT METHOD, AND COMPUTER PROGRAM - An electric resistance welding operation management device | 04-02-2015 |
20150083278 | High-Strength Hot-Dip Galvanized Steel Sheet Excellent in Impact Resistance Property and Manufacturing Method Thereof, and High-Strength Alloyed Hot-Dip Galvanized Steel Sheet and Manufacturing Method Thereof - A base steel sheet has a hot-dip galvanized layer formed on a surface thereof, in which, in a steel sheet structure in a range of ⅛ thickness to ⅜ thickness centered around ¼ thickness of a sheet thickness from a surface, a volume fraction of a retained austenite phase is 5% or less, and a total volume fraction of phases of bainite, bainitic ferrite, fresh martensite, and tempered martensite is 40% or more, an average effective crystal grain diameter is 5.0 μm or less, a maximum effective crystal grain diameter is 20 μm or less, and a decarburized layer with a thickness of 0.01 μm to 10.0 μm is formed on a surface layer portion, in which a density of oxides dispersed in the decarburized layer is 1.0×10 | 03-26-2015 |
20150082848 | ROLLING APPARATUS AND ROLLING MONITORING METHOD - [Object] To provide a rolling apparatus that enables an operator to recognize the rolling status such as the behavior of the steel sheet entering the rolling stand and enables a stable rolling process. | 03-26-2015 |
20150081373 | SCHEDULING APPARATUS, SCHEDULING METHOD, AND COMPUTER PROGRAM - Resources, product classes, processes, and product orders are registered in mutual association. From the information of product classes, processes, and resources, variables and constants used when formulating an objective function and a constraint expression are constructed. A constraint setting screen is displayed which includes contents of the constraint expression described by using the selection input field of identification information of the product classes, processes, and resources. Based on a result of selective input to this constraint setting screen, the contents of constraint are set. Further, an object setting screen is displayed which includes the contents of an object described using the product classes and processes and text information indicating the contents of the object, and a selection input field thereof. The contents of the object are registered based on a result of selective input to this object setting screen. Then, the constraint expression and the objective function are formulated based on the constructed variables and constants, the information of the product class, process, and resource, and the set contents of the constraint and the objective function. | 03-19-2015 |
20150071812 | STEEL MATERIAL - A steel material having a chemical composition of, by mass %, C: greater than 0.05% to 0.2%, Mn: 1% to 3%, Si: greater than 0.5% to 1.8%, Al: 0.01% to 0.5%, N: 0.001% to 0.015%, Ti or a sum of V and Ti: greater than 0.1% to 0.25%, Ti: 0.001% or more, Cr: 0% to 0.25%, Mo: 0% to 0.35%, and a balance: Fe and impurities, includes a steel structure being a multi-phase structure having a main phase made of ferrite of 50 area % or more, and a second phase containing one or two or more selected from a group consisting of bainite, martensite and austenite, in which an average nanohardness of the above-described second phase is less than 6.0 GPa, and when a boundary where a misorientation of crystals becomes 2° or more is defined as a grain boundary, and a region surrounded with the grain boundary is defined as a crystal grain, an average grain diameter of all crystal grains in the above-described main phase and the above-described second phase is 3 μm or less, and a proportion of a length of small-angle grain boundaries where the misorientation is 2° to less than 15° in a length of all grain boundaries is 15% or more. | 03-12-2015 |
20150071703 | FILLET ARC WELDED JOINT AND METHOD OF FORMING THE SAME - At least one stiffening bead ( | 03-12-2015 |
20150064495 | STEEL SHEET USED TO MANUFACTURE A CONTAINER AND METHOD OF MANUFACTURING THE SAME - A steel sheet used to manufacture a container, wherein the steel sheet includes a chromate film layer or a film layer including Zr on the Ni plating layer, the Ni plating layer includes one or more of a hydroxyl Ni and a Ni oxide, an adhesion amount of the Ni plating layer in terms of an amount of Ni is 0.3 g/m | 03-05-2015 |
20150064454 | CASE HARDENING STEEL MATERIAL - There is provided a chromium-containing austenitic alloy wherein at least one surface of the surfaces of the alloy has a continuous chromium oxide film with a thickness of 5 nm or more and less than 50 nm. A maximum current density determined by a critical passivation current density method is 0.1 μA/cm | 03-05-2015 |
20150064055 | TITANIUM ALLOY FOR GOLF CLUB FACE - An α+β-type titanium alloy which, has a high Young's modulus and strength-ductility balance is provided as a material for a face of a driver, iron, or other golf club. | 03-05-2015 |
20150056005 | PROCESS FOR PRODUCING WELDED JOINT, AND WELDED JOINT - Provided is a process for producing a welded joint which includes a weld metal having high strength and high toughness, and containing fewer blowholes. The process for producing a welded joint according to the present embodiment includes the steps of: preparing a base material containing, by mass %, not less than 10.5% of Cr; and subjecting the base material to GMA welding using a shielding gas containing 1 to 2 volume % or 35 to 50 volume % of CO | 02-26-2015 |
20150044086 | STEEL WIRE ROD OR STEEL BAR HAVING EXCELLENT COLD FORGEABILITY - A steel wire rod or steel bar as hot-rolled, including: by mass %: C: 0.1 to 0.6%, Si: 0.01 to 1.5%, Mn: 0.05 to 2.5%, Al: 0.015 to 0.3%, and N: 0.0040 to 0.0150%, and P: limited to 0.035% or less and S: limited to 0.025% or less, and the balance substantially consisting of iron and unavoidable impurities, wherein a depth of d (mm) from the surface of the surface layer region with 20 HV 0.2 or more higher, relative to HV 0.2 that is the average hardness in the region where the depth from the surface is from sectional radius R×0.5 (mm) to the center satisfies the formula (1); the steel structure of the surface layer region has a ferrite fraction of 10% or less by area ratio, with the balance being one or two or more of martensite, bainite and pearlite; the steel structure where the depth from the surface is from the sectional radius R×0.5 (mm) to the center is ferrite-pearlite or ferrite-bainite; and the surface roughness Ra in the circumferential direction when scales adhering to the surface have been removed is 4 μm or less. | 02-12-2015 |
20150041023 | Fe-BASED METAL PLATE AND METHOD OF MANUFACTURING THE SAME - On at least one surface of a base metal plate ( | 02-12-2015 |
20150027591 | STEEL MATERIAL FOR NITRIDING AND NITRIDED COMPONENT - A steel material for nitriding has a composition comprising, by mass percent, C: more than 0.15% and not more than 0.35%, Si≦0.20%, Mn: 0.10 to 2.0%, P≦0.030%, S≦0.050%, Cr: 0.80 to 2.0%, V: 0.10 to 0.50%, Al: 0.01 to 0.06%, N≦0.0080%, O≦0.0030%, and optionally one or more elements of Mo, Cu, Ni, Ti, Nb, Zr, Pb, Ca, Bi, Te, Se and Sb, the balance being Fe and impurities. The composition satisfies the conditions of [20≦(669.3×log | 01-29-2015 |
20150024871 | TITANIUM ALLOY FOR GOLF CLUB FACE - The present invention provides, as a material for a golf club face of a driver, an iron or the like, a titanium alloy which satisfies the regulation for a coefficient of restitution, and has high Young's modulus and tensile strength and also has excellent hot and cold workability. The titanium alloy for a golf club face according to the present invention comprises, in percent by mass, 1.0 to 3.5% of Al, 0.5 to 1.4% of Fe, 0.2 to 0.5% or O and 0.002 to 0.030% of N, and the balance of Ti with inevitable impurities, wherein an α-phase is strengthened by combined addition of O and Al, and inexpensive Fe is selected as a β-phase stabilizing element, leading to high strength and high Young's modulus in combination. The content of Al causing deterioration of hot workability is limited to a low value, leading to low rolling load during hot rolling, and thus flaws and edge cracking are unlikely to occur during hot rolling. | 01-22-2015 |
20150023834 | HOT-ROLLED STEEL SHEET AND MANUFACTURING METHOD FOR SAME - A hot-rolled steel sheet including, in terms of % by mass, 0.030% to 0.120% of C, 1.20% or less of Si, 1.00% to 3.00% of Mn, 0.01% to 0.70% of Al, 0.05% to 0.20% of Ti, 0.01% to 0.10% of Nb, 0.020% or less of P, 0.010% or less of S, and 0.005% or less of N, and a balance consisting of Fe and impurities, in which 0.106≧(C %-Ti %*12/48-Nb %*12/93)>0.012 is satisfied; a pole density of {112}(110) at a position of ¼ plate thickness is 5.7 or less; an aspect ratio (long axis/short axis) of prior austenite grains is 5.3 or less; a density of (Ti, Nb)C precipitates having a size of 20 nm or less is 10 | 01-22-2015 |
20150021126 | CALIPER BRAKE DEVICE FOR RAILWAY VEHICLES - A caliper body is slidably attached to a truck in the axial direction of a wheel. The body has a tip end portion branched off into two parts. One part is close to an outside of one side of the wheel with another part close to an outside of the other side of the wheel. An operating lever is arranged that rotates, via a protruding-retreating motion of a pneumatic actuator rod, one end side via a connecting link around an eccentric axis, which is rotatably supported by one of branched-off parts of the caliper body, as a center. One brake shoe is slidably installed to an anchor pin of the caliper body to freely rotate on a tip side inner surface of a caliper lever installed in an eccentric part. Another brake shoe is installed on a tip side inner surface of the other branched-off part of the caliper body. | 01-22-2015 |
20150013590 | SEED CRYSTAL HOLDING SHAFT FOR USE IN SINGLE CRYSTAL PRODUCTION DEVICE, AND METHOD FOR PRODUCING SINGLE CRYSTAL - The aim of the present invention is to provide a seed crystal holding shaft that is used in a device for producing single crystals by a solution process that allows for faster growth of SiC single crystals than in the past, and a method for producing single crystals by the solution process. The seed crystal holding shaft used in a device for producing single crystals by the solution process is a seed crystal holding shaft wherein at least a portion of a side of the seed crystal holding shaft is covered by a reflectance member having a higher reflectance than the reflectance of the seed crystal holding shaft and the reflector member is disposed such that there is a space between the reflector member and the seed crystals held on the end face of the seed crystal holding shaft. | 01-15-2015 |
20140366353 | DEVICE FOR ASSEMBLING RAILWAY WHEEL WITH BRAKE DISCS - A device for assembling a railway wheel with brake discs, the brake discs arranged to face each other across a railway wheel web and a center-deviation prevention key penetrating the web, includes a disc support supporting an internal hole of one of the brake discs; a wheel support provided concentrically with the disc support within the disc support, and supporting a hub's bore of the railway wheel on the brake disc supported by the disc support; and a bolt support provided concentrically with the disc support and the wheel support outside of the disc support, and supporting the bolt to correspond to bolt holes formed in the brake discs and the web of the railway wheel. The disc support and the wheel support are individually rotatable about a railway wheel central axis. The disc and wheel supports and the bolt support move up and down relatively to each other. | 12-18-2014 |
20140363607 | SILICON CARBIDE SINGLE CRYSTAL WAFER AND MANUFACTURING METHOD FOR SAME - Provided are a method for manufacturing a SiC single crystal having high crystal quality and, in particular, extremely low screw dislocation density and a SiC single crystal ingot obtained by the method. In particular, provided is a silicon carbide single crystal substrate that is a substrate cut from a bulk silicon carbide single crystal grown by the Physical Vapior Transport (PVT) method, in which the screw dislocation density is smaller in the peripheral region than in the center region, so that screw dislocations are partially reduced. | 12-11-2014 |
20140363329 | ROLLED STEEL BAR OR WIRE ROD FOR HOT FORGING - A rolled steel bar or wire rod having hot surface fatigue strength, wear resistance, and machinability even after hot forging has a composition containing C, Si, Mn, S, Cr, Mo (optional), Al, and N, with the balance being Fe and impurities. The chemical composition satisfies that fn1 defined by Formula (1) is 1.60 to 2.10. The structure of the rolled steel bar or wire rod for hot forging includes a ferrite-pearlite structure, a ferrite-pearlite-bainite structure, or a ferrite-bainite structure. A maximum value/a minimum value of average ferrite grain size, which is observed and measured randomly in 15 visual fields each having an area of 62500 μm | 12-11-2014 |
20140361530 | THREADED TUBULAR COMPONENT AND METHOD FOR COATING SUCH A THREADED TUBULAR COMPONENT - The invention concerns a tubular element for drilling and/or working hydrocarbon wells, having an end ( | 12-11-2014 |
20140360036 | DEVICE FOR MEASURING AN INTERNAL OR EXTERNAL PROFILE OF A TUBULAR COMPONENT - A device includes a first sensor for making a radial measurement of a tubular component and a support which can drive the first sensor in a circular trajectory in a predefined plane orthogonal to the principal axis of the component. The support includes a principal body that can be attached to the component by a releasable attachment mechanism and a rotary shaft onto which an arm carrying the first sensor is attached to allow displacement of the first sensor in a circular trajectory inside or about the component. The device further includes a second sensor for measuring an angular position of the first sensor for each of its radial measurements, the radial and angular measurements obtained allowing the profile of the component in the predefined plane to be determined. | 12-11-2014 |
20140355004 | METHOD FOR MEASURING END PORTION SHAPE OF THREADED PIPE OR TUBE - The present invention provides a method for measuring an end portion shape of a threaded pipe or tube P, the method including: a thread axis detection step; a laser light positioning step; a laser light image capture step; and a shape calculation step. In the laser light positioning step, the light source | 12-04-2014 |
20140352417 | DEVICE FOR MEASURING UNDULATION OF BRAKE DISC IN RAILWAY WHEEL WITH BRAKE DISCS - A device for measuring undulation of a brake disc in a railway wheel with brake discs includes a wheel support supporting a hub's bore of the railway wheel; a first displacement gauge for measuring a height displacement of the brake disc frictional surface for one round to follow rotation of the wheel support; and a second displacement gauge for measuring a height displacement of a railway wheel rim surface for one round to follow rotation of the wheel support. A computing unit calculates a difference between maximum and minimum values of the height displacement of the frictional surface by acquiring measurement data from the first displacement gauge, calculates a difference between the maximum and minimum values of the height displacement of the rim's surface by acquiring measurement data from the second displacement gauge, and derives a difference between the both calculated differences as brake disc undulation. | 12-04-2014 |
20140342150 | NON-ORIENTED ELECTRICAL STEEL SHEET - A non-oriented electrical steel sheet includes: C: 0.005 mass % or less; S: 0.003 mass % or less; N: 0.003 mass % or less; Si: 2.0 mass % or more and less than 4.5 mass %; Al: 0.15 mass % or more and less than 2.5 mass %; and Cr: 0.3 mass % or more and less than 5.0 mass %; and a balance being composed of Fe and inevitable impurities; and a Cr-oxide-containing layer having a thickness of not less than 0.01 μm nor more than 0.5 μm on a surface side, in which when [Si], [Al], and [Cr] are set to the Si content, the Al content, and the Cr content (mass %) of the non-oriented electrical steel sheet respectively, and t is set to a sheet thickness (mm) of the non-oriented electrical steel sheet, 10 mass %≦2[Si]+ | 11-20-2014 |
20140328716 | STEEL FOR WELDING - A steel for welding includes steel components in which P | 11-06-2014 |
20140312115 | PRODUCTION MANAGEMENT METHOD FOR STEEL TUBES AND PIPES - There is provided a production management method for steel tubes and pipes produced through a plurality of production processes, including:
| 10-23-2014 |
20140311632 | METHOD FOR PRODUCING STEEL TUBE FOR AIR BAG - A method for producing a steel tube of high strength and toughness for air bag subjects a steel tube to high-frequency induction heating such that the outer surface temperature T1 (° C.) of the tube measured at the end of high-frequency induction heating is within the range defined by TAc3+40° C.≦T1≦1100° C., TAc3 is the temperature (° C.) of Ac | 10-23-2014 |
20140308455 | METHOD FOR FINISHING A TUBULAR THREADED MEMBER WITH A DRY PROTECTION COATING - A tubular threaded element including a dry protective coating. The coating includes a solid matrix adhering to the substrate in which there are dispersed particles of at least one solid lubricant belonging to one and the same class. The solid matrix is lubricating and has a rheological behaviour of plastic or viscoplastic type. The coating protects the threadings of the threaded elements, used for example in hydrocarbon wells, from corrosion and galling. | 10-16-2014 |
20140306699 | MAGNETIZING APPARATUS FOR MAGNETIC PARTICLE TESTING OF WHEEL - The present inventions provides a magnetizing apparatus | 10-16-2014 |
20140295194 | HEAT RESISTANT FERRITIC STEEL AND METHOD FOR PRODUCING THE SAME - There is provided a heat resistant ferritic steel including a base material including, by mass percent, C: 0.01 to 0.3%, Si: 0.01 to 2%, Mn: 0.01 to 2%, P: at most 0.10%, S: at most 0.03%, Cr: 7.5 to 14.0%, sol.Al: at most 0.3%, and N: 0.005 to 0.15%, the balance being Fe and impurities, and an oxide film that is formed on the base material and contains 25 to 97% of Fe and 3 to 75% of Cr. This heat resistant ferritic steel is excellent in photoselective absorptivity and oxidation resistance. | 10-02-2014 |
20140294659 | METHOD FOR MANUFACTURING HIGH-SI AUSTENITIC STAINLESS STEEL - A high-Si content austenitic stainless steel, which exhibits stable acid resistance and excellent corrosion resistance in high-temperature and concentrated nitric acid, has a chemical composition comprising: C: at most 0.04%; Si: 2.5-7.0%; Mn: at most 10%; P at most 0.03%; S: at most 0.03%; N: at most 0.035%; sol. Al: at most 0.03%; Cr: 7-20%; Ni: 10-22%; optionally, one or more types selected from Nb, Ti, Ta and Zr: 0.05-0.7% in total; and the remainder being Fe and impurities, wherein a total amount of B | 10-02-2014 |
20140290806 | WIRE MATERIAL FOR NON-HEAT TREATED COMPONENT, STEEL WIRE FOR NON-HEAT TREATED COMPONENT, AND NON-HEAT TREATED COMPONENT AND MANUFACTURING METHOD THEREOF - A wire material used for manufacturing a non-heat treated component whose tensile strength is 900 MPa to 1300 MPa, containing, in mass %: C: 0.20% to 0.50%, Si: 0.05% to 2.0%, Mn: 0.20% to 1.0%, being limited to contain P: 0.030% or less, S: 0.030% or less, N: 0.005% or less, F1 defined by the following expression (1) is less than 0.60, with the balance made up of Fe and inevitable impurities, wherein a metal structure contains a pearlite structure of 64×(C %)+52% or more in a volume fraction, with the balance made up of one kind or two kinds of a pro-eutectoid ferrite structure and a bainite structure, an average block grain diameter of the pearlite structure at a region from a surface layer to 0.1 D is 15 μm or less when a diameter of the wire material is set to be D, and (the average block grain diameter of the pearlite structure at the region from the surface layer to 0.1 D)/(an average block grain diameter of the pearlite structure at a range from 0.25 D to a center) is less than 1.0. | 10-02-2014 |
20140287257 | CHROMATE-FREE PRECOATED METAL SHEET HAVING METALLIC APPEARANCE AND WATER-BASED COATING COMPOSITION USED IN THE SAME - A chromate-free coated metal sheet according to the present invention includes: a metal sheet; and a coating film α which contains an organic resin A as a film formation component and a flaky aluminum pigment C having a deactivation-treated surface on at least one surface of the metal sheet; wherein the thickness of the coating film α is in a range of 2 to 10 μm. | 09-25-2014 |
20140286698 | WELDING MATERIAL AND WELDING JOINT - There is provided a welding material used for welding of SUS310 stainless steel base metal that contains at least one of Nb and V and is excellent in intergranular corrosion resistance, the chemical composition of the welding material consisting, by mass percent, of C: 0.02% or less, Si: 2% or less, Mn: 2% or less, Cr: 26 to 50%, N: 0.15% or less, P: 0.02% or less, S: 0.002% or less, and Ni: a content percentage satisfying [5≦Ni≦Cr−14], and the balance of Fe and impurities. Also, there is provided a welding joint of an austenitic stainless steel, which consists of the base metal and a weld metal formed by using the welding material. | 09-25-2014 |
20140261917 | METHOD FOR MANUFACTURING AUSTENITIC STAINLESS STEEL - A high Si-containing austenitic stainless steel having corrosion resistance in a nitric acid environment at a high temperature is made by hot-rolling a slab of stainless steel and heat treating the hot-rolled stainless steel at a temperature of 1100 to 1160° C. The steel is cooled at cooling rate of at least 100° C./min. The stainless steel has a chemical composition containing: C: at most 0.04%; Cr: 7 to 20%, Ni: 10 to 22%, Si: 2.5 to 7%, Mn: at most 10%, sol. Al: at most 0.03%, P: at most 0.03%, S: at most 0.03%; N: at most 0.035%, a total of one or more of Nb, Ti, Ta, and Zr being 0.05 to 0.7%; and the remainder Fe and impurities. The heating temperature during the hot rolling is T | 09-18-2014 |
20140261062 | METHOD AND DEVICE FOR STEERING TRUCK OF RAILWAY VEHICLE, AND TRUCK - The object is to solve the issue of an over-steered state at an exit straight portion in addition to enhance a curve passage performance than when a steering angle of front and rear axles is set at a radial steering angle. A steering method for a steering device intentionally turns two axles ( | 09-18-2014 |
20140255816 | TITANIUM MATERIAL FOR POLYMER ELECTROLYTE FUEL CELL SEPARATOR, METHOD FOR PRODUCING THE SAME, AND POLYMER ELECTROLYTE FUEL CELL USING THE SAME - A titanium material for a polymer electrolyte fuel cell separator consists of, by mass %, a platinum group metal: 0.005% to 0.15% and a rare earth metal: 0.002% to 0.10%, with the balance being Ti and impurities. The titanium material of the present invention is provided with a film formed of a titanium oxide and a platinum group metal on the surface thereof. It is preferred that the film has a thickness of 50 nm or less, and that the concentration of the platinum group metal on the surface of the film is 1.5% by mass or more. With the thus formed film, the titanium material of the present invention is capable of achieving a reduction in initial contact resistance and ensuring good corrosion resistance. In the titanium material of the present invention, the rare earth metal is preferably Y, and the platinum group metal is preferably Pd. | 09-11-2014 |
20140251507 | STEEL FOR SURFACE HARDENING FOR MACHINE STRUCTURAL USE AND PART FOR MACHINE STRUCTURAL USE - The present invention is steel for surface hardening for machine structural use which contains, by mass %, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 0.35 to less than 1.5%, and Al: 0.01 to 0.5%, is restricted to B: less than 0.0003%, S: 0.0001 to 0.021%, N: 0.003 to 0.0055%, P: 0.0001 to 0.03%, and 0:0.0001 to 0.0050%, has a ratio Mn/S of Mn and S satisfying 70 to 30,000, has a balance of Fe and unavoidable impurities, and, when nitrided, then induction hardened, has a surface hardenability of a Vicker's hardness when tempered at 300° C. of 650 or more. | 09-11-2014 |
20140247856 | SLAG-SUPPLYING CONTAINER FOR USE IN ELECTRIC FURNACE FOR REDUCTION PROCESSING OF STEEL-MAKING SLAG - This slag-supplying container of an electric furnace for reduction processing of steel-making slag includes: a container body that causes hot steel-making slag to flow to the electric furnace; a slag discharging portion connected with an electric-furnace-side slag-supplying port; a slag receiving portion that receives the hot steel-making slag supplied; a lid that opens and closes the slag receiving portion; an exhausting portion that discharges exhaust gas from the electric furnace; and, a tilting unit that tilts the container body to adjust the amount of inflow of the hot steel-making slag to the electric-furnace-side slag-supplying port. | 09-04-2014 |
20140246125 | GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND MANUFACTURING METHOD THEREOF - A silicon steel sheet ( | 09-04-2014 |
20140245945 | SIC SINGLE CRYSTAL MANUFACTURING METHOD - Provided is a SiC single crystal manufacturing method whereby growing speed improvement required to have high productivity can be achieved, while maintaining flat growth in which uniform single crystal growth can be continued at the time of growing a SiC single crystal using a solution method. In this SiC single crystal manufacturing method, a SiC single crystal is grown in a crucible from a Si solution containing C. The SiC single crystal manufacturing method is characterized in alternately repeating: a high supersaturation degree growing period, in which the growth is promoted by maintaining the supersaturation degree of C in the Si solution higher than an upper limit critical value at which flat growth can be maintained, said supersaturation degree being at a growing interface between the Si solution and a SiC single crystal being grown; and a low supersaturation degree growing period, in which the growth is promoted by maintaining the supersaturation degree lower than the critical value. | 09-04-2014 |
20140245806 | METHOD OF PRODUCING SEAMLESS METAL PIPE - A method of producing a seamless metal pipe, which can suppress the occurrence of lamination defects, is provided. A method of producing a seamless metal pipe according to an embodiment of the present invention includes the steps of: heating a high alloy containing, by mass %, Cr: 20 to 30% and Ni: more than 22% and not more than 60% in a first heating furnace (S2); piercing-rolling the high alloy heated in the first heating furnace with a first piercing machine to produce a hollow shell (S3); heating the hollow shell in a second heating furnace (S4); and elongation-rolling the hollow shell heated in the second heating furnace with the first piercing machine or a second piercing machine which is different from the first piercing machine (S5). | 09-04-2014 |
20140242414 | HIGH-STRENGTH STEEL SHEET AND HIGH-STRENGTH GALVANIZED STEEL SHEET EXCELLENT IN SHAPE FIXABILITY, AND MANUFACTURING METHOD THEREOF - The present invention provides a high-strength steel sheet excellent in shape fixability. The high-strength steel sheet contains C, Si, Mn, P, S, Al, N, and O with predetermined contents, in which a retained austenite phase of 5 to 20% in volume fraction is contained, an amount of solid-solution C contained in the retained austenite phase is 0.80 to 1.00% in mass %, W | 08-28-2014 |
20140241933 | COLD-ROLLED STEEL SHEET - A high-strength cold-rolled steel sheet excellent in ductility, work hardenability, and stretch flangeability, and having tensile strength of 780 MPa or more includes: a chemical composition containing, in mass percent, C: more than 0.020% to less than 0.30%, Si: more than 0.10% to 3.00% or less, Mn: more than 1.00% to 3.50% or less; and metallurgical structure whose main phase is a low-temperature transformation product, and whose secondary phase contains retained austenite. The retained austenite has a volume fraction relative to overall structure of more than 4.0% to less than 25.0% and an average grain size of less than 0.80 μm, and of the retained austenite, the number density of retained austenite grains whose grain size is 1.2 μm or more is 3.0×10 | 08-28-2014 |
20140239944 | CARBURIZATION SENSING METHOD - The present invention provides a method for sensing whether carburization occurs or not on an inner surface of a pipe or tube by an electromagnetic testing, comprising: a first step of inserting a carburized tube P | 08-28-2014 |
20140238790 | BRAKE DISC FOR RAILWAY VEHICLE - A brake disc for a railway vehicle, including a ring-shaped plate portion with a front side serving as a frictional surface and a plurality of fins being projected and disposed radially on the back side of the plate portion, the plate portion being fixed to a wheel, wherein a rib is provided between fins adjacent to each other, and a slit developing in the direction from a wheel-side face of the rib toward the back side of the plate portion is disposed in a circumferentially intermediate portion of the rib, thereby making it possible to suppress the deformation caused by frictional heat. | 08-28-2014 |
20140238661 | THREADED TUBULAR COMPONENT AND RESULTING CONNECTION - A threaded tubular component configured for drilling or working hydrocarbon wells, the tubular component including, at one of its ends, a threaded zone formed on its external or internal peripheral surface depending on whether the threaded end is male or female in type. The end portion is at least partially coated with a dry film, including a thermoplastic or thermoset matrix including microcapsules filled with compounds in liquid form. | 08-28-2014 |
20140238557 | METHOD FOR PRODUCING COLD-ROLLED STEEL SHEET - A method for producing a high-tensile cold-rolled steel sheet includes subjecting a slab having a composition containing C: more than 0.020% and less than 0.30%, Si: more than 0.10% and 3.00% or less, and Mn: more than 1.00% and 3.50% or less to hot rolling wherein the roll draft of the final one pass is higher than 15%, and rolling is finished in the temperature region of Ar | 08-28-2014 |
20140234659 | HIGH-STRENGTH HOT-DIP GALVANIZED STEEL SHEET HAVING EXCELLENT DELAYED FRACTURE RESISTANCE AND MANUFACTURING METHOD THEREOF - A hot-dip galvanizing layer or an alloyed hot dip galvanizing layer is formed on the surface of a base steel sheet in which in volume fraction, 40 to 90% of a ferrite phase and 5% or less of a retained austenite phase are contained, and a ratio of non-recrystallized ferrite to the entire ferrite phase is 50% or less in volume fraction, and further a grain diameter ratio being a value of, of crystal grains in the ferrite phase, an average grain diameter in the rolling direction divided by an average grain diameter in the sheet width direction is 0.75 to 1.33, a length ratio being a value of, of hard structures dispersed in island shapes, an average length in the rolling direction divided by an average length in the sheet width direction is 0.75 to 1.33, and an average aspect ratio of inclusions is 5.0 or less. | 08-21-2014 |
20140234656 | STEEL SHEET PROVIDED WITH HOT DIP GALVANIZED LAYER EXCELLENT IN PLATING WETTABILITY AND PLATING ADHESION AND METHOD OF PRODUCTION OF SAME - A steel sheet which uses steel sheet which contains the easily oxidizable elements Si and Mn as a base material and which is provided with a hot dip galvanized layer which is excellent in plating wettability and plating adhesion and a method of production of the same are provided. A hot dip galvanized steel sheet which is comprised of a steel sheet having a hot dip galvanized layer A on the surface of the steel sheet, characterized by having the following B layer right under the steel sheet surface and in the steel sheet: | 08-21-2014 |
20140234155 | Ni-BASED HEAT RESISTANT ALLOY - A Ni-based heat resistant alloy as pipe, plate, rod, forgings and the like consists of C≦0.15%, Si≦2%, Mn≦3%, P≦0.03%, S≦0.01%, Cr: 15% or more and less than 28%, Mo: 3 to 15%, Co: more than 5% and not more than 25%, Al: 0.2 to 2%, Ti: 0.2% to 3%, Nd: fn to 0.08%, and O≦0.4Nd, further containing, as necessary, at least one kind of Nb, W, B, Zr, Hf, Mg, Ca, Y, La, Ce, Ta, Re and Fe of specific amounts, the balance being Ni and impurities, wherein, fn=1.7×10 | 08-21-2014 |
20140230973 | STEEL SHEET AND METHOD OF PRODUCING THE SAME - A steel sheet of the present invention has a steel structure obtained by performing a soaking at a dual phase region temperature of Ac1 temperature or higher and lower than Ac3 temperature for a soaking time of 15 seconds or longer and 35 seconds or shorter, next, performing a primary cooling to a temperature range of 250° C. or higher and 380° C. or lower within 3 seconds at a cooling rate of 0.5° C./s or more and 30° C./s or less, and performing a retention in a temperature range of 260° C. or higher and 370° C. or lower for 180 seconds or longer and 540 seconds or shorter, in which a yield ratio is 65% or less and tensile strength is 590 MPa or more after the primary cooling. | 08-21-2014 |
20140219858 | HOT-FORGING MICRO-ALLOYED STEEL AND HOT-ROLLED STEEL EXCELLENT IN FRACTURE-SPLITABILITY AND MACHINABILITY, AND COMPONENT MADE OF HOT-FORGED MICROALLOYED STEEL - The invention provides a hot-forging micro-alloyed steel and a hot-rolled steel which achieve excellent fracture-splitability and machinability, without impairing productivity or mechanical properties and without addition of Pb or the like. It also provides a component made of hot-forged micro-alloyed steel. | 08-07-2014 |
20140212686 | HOT-DIP GALVANIZED COLD-ROLLED STEEL SHEET AND PROCESS FOR PRODUCING SAME - A hot-dip galvanized cold-rolled steel sheet has a tensile strength of 750 MPa or higher, a composition consisting, in mass percent, of C: more than 0.10% and less than 0.25%, Si: more than 0.50% and less than 2.0%, Mn: more than 1.50% and 3.0% or less, and optionally containing one or more types of Ti, Nb, V, Cr, Mo, B, Ca, Mg, REM, and Bi, P: less than 0.050%, S: 0.010% or less, sol. Al: 0.50% or less, and N: 0.010% or less, and a main phase as a low-temperature transformation product and a second phase as retained austenite. The retained austenite volume fraction is more than 4.0% and less than 25.0% of the whole structure, and has an average grain size of less than 0.80 □m. A number density of retained austenite grains having a grain size of 1.2 □m or more is 3.0□10 | 07-31-2014 |
20140212684 | HIGH-STRENGTH GALVANIZED STEEL SHEET EXCELLENT IN BENDABILITY AND MANUFACTURING METHOD THEREOF - The present invention provides a high-strength galvanized steel sheet with maximum tensile strength of 900 MPa or more. The high-strength galvanized steel sheet has an alloyed galvanized layer formed on a surface of a base steel sheet containing predetermined amounts of C, Si, Mn, P, S, Al, N, O with a balance being constituted of iron and inevitable impurities, in which in a structure of the base steel sheet, retained austenite is limited to 8% or less in volume fraction, kurtosis K* of the hardness distribution between 2% hardness and 98% hardness is −0.30 or less, a ratio between Vickers hardness of surface layer of the base steel sheet and Vickers hardness of ¼ thickness of the base steel sheet is 0.35 to 0.70, and a content of iron in the alloyed galvanized layer is 8 to 12% in mass %. | 07-31-2014 |
20140212660 | MEDIUM CARBON STEEL SHEET FOR COLD WORKING AND METHOD FOR MANUFACTURING THE SAME - Disclosed is a medium carbon steel sheet for cold working that has a hardness of 500 HV to 900 HV when subjected to high-frequency quenching in which a temperature is raised at an average heating rate of 100° C./second, the temperature is held at 1,000° C. for 10 seconds, and a quick cooling to a room temperature is carried out at an average cooling rate of 200° C./second. The medium carbon steel sheet includes, by mass %, C: 0.30 to 0.60%, Si: 0.06 to 0.30%, Mn: 0.3 to 2.0%, P: 0.03% or less, S: 0.0075% or less, Al: 0.005 to 0.10%, N: 0.001 to 0.01%, and Cr: 0.001 to 0.10%, the balance composed of Fe and inevitable impurities. An average diameter d of a carbide is 0.6 μm or less, a spheroidizing ratio p of the carbide is equal to or more than 70% and less than 90%, and the average diameter d (μm) of the carbide and the spheroidizing ratio p % of the carbide satisfy d≦0.04×p−2.6. | 07-31-2014 |
20140212322 | DUPLEX STAINLESS STEEL - Provided is duplex stainless steel having high strength, SCC resistance and SSC resistance excellent in a high-temperature chloride environment, and capable of suppressing precipitation of a σ phase. The duplex stainless steel of the present embodiment includes, in mass %, of: C: at most 0.03%; Si: 0.2 to 1%; Mn: more than 5.0% to at most 10%; P: at most 0.040%; S: at most 0.010%; Ni: 4.5 to 8%; sol. Al: at most 0.040%; N: more than 0.2% to at most 0.4%; Cr: 24 to 29%; Mo: 0.5 to less than 1.5%; Cu: 1.5 to 3.5%; W: 0.05 to 0.2%; the balance being Fe and impurities, wherein the duplex stainless steel satisfies Formula (1): Cr+8Ni+Cu+Mo+W/2≧65 . . . (1), where a symbol of each element in Formula (1) represents a content of the element (in mass %). | 07-31-2014 |
20140211361 | STEEL SHEET SHAPE CONTROL METHOD AND STEEL SHEET SHAPE CONTROL APPARATUS - A steel sheet shape control method includes, (A) setting a target correction shape of the steel sheet at a position of an electromagnet to a curved shape, (B) measuring a steel sheet shape when electromagnetic correction is performed, (C) calculating the steel sheet shape in a nozzle position based on the steel sheet shape, (D) repeating (B) and (C) by resetting the target correction shape to a curved shape having a smaller amount of warp, (E) when the amount of warp of the steel sheet shape at the position of the nozzle is less than the upper limit value, (F) calculating vibration of the steel sheet at the position of the nozzle, and (G) adjusting a control gain of the electromagnet until amplitude of vibration is less than a second upper limit value when the amplitude of the vibration is equal to or more than the second upper limit value. | 07-31-2014 |
20140208780 | COOLING SYSTEM AND COOLING METHOD OF ROLLING STEEL - A cooling system that cools hot rolled long steel bar, provided with a plurality of chambers that are arranged along the longitudinal direction of the rolled steel bar. Each of the plurality of chambers is provided with a blow outlet that, facing from the chamber to the rolled steel bar, blows out compressed air for cooling that is introduced to the chamber from a gas inlet that is connected to the chamber; a nozzle plate having a plurality of nozzle holes that is provided at this blow outlet so as to face the rolled steel bar; a cooling water supply nozzle that supplies cooling water into the chamber; and a rectifying plate that is provided between the gas inlet and the cooling water supply nozzle, and that prevents the compressed gas for cooling that is introduced from the gas inlet from directly striking the nozzle plate. The cooling system of the present invention sprays a cooling medium that is produced by mixing the cooling water that is supplied from the cooling water supply nozzle and the compressed gas for cooling that is introduced from the gas inlet and rectified by the rectifying plate toward the rolled steel bar through the nozzle holes of the nozzle plate, and performs uniform cooling of the surfaces of the rolled steel bar. | 07-31-2014 |
20140205855 | HIGH-STRENGTH STEEL SHEET EXCELLENT IN IMPACT RESISTANCE AND MANUFACTURING METHOD THEREOF, AND HIGH-STRENGTH GALVANIZED STEEL SHEET AND MANUFACTURING METHOD THEREOF - [Summary] The present invention provides a high-strength steel sheet excellent in impact resistance. The high-strength steel sheet contains predetermined contents of C, Si, Mn, P, S, Al, Ti, N, and O, with the balance being iron and inevitable impurities, and has a steel sheet structure in which, in a ⅛ thickness to ⅜ thickness region across ¼ of a sheet thickness, 1 to 8% retained austenite is contained in volume fraction, an average aspect ratio of the retained austenite is 2.0 or less, an amount of solid-solution Mn in the retained austenite is 1.1 times an average amount of Mn or more, and TiN grains having a 0.5 μm average grain diameter or less are contained, and a density of AlN grains with a 1 μm grain diameter or more is 1.0 pieces/mm | 07-24-2014 |
20140205487 | OIL-WELL STEEL PIPE HAVING EXCELLENT SULFIDE STRESS CRACKING RESISTANCE - To provide an oil-well steel pipe having excellent SSC resistance. The oil-well steel pipe according to the present invention contains, by mass percent, C: 0.15 to 0.35%, Si: 0.1 to 0.75%, Mn: 0.1 to 1.0%, Cr: 0.1 to 1.7%, Mo: 0.1 to 1.2%, Ti: 0.01 to 0.05%, Nb: 0.010 to 0.030%, Al: 0.01 to 0.1%, P: at most 0.03%, S: at most 0.01%, N: at most 0.007%, and O: at most 0.01%, the balance being Fe and impurities. The Ti content and the Nb content in a residue obtained by bromine-methanol extraction satisfy equation (1): | 07-24-2014 |
20140202250 | ULTRASONIC TESTING METHOD AND ULTRASONIC ARRAY PROBE - An array probe | 07-24-2014 |
20140193667 | HIGH-STRENGTH COLD-ROLLED STEEL SHEET HAVING EXCELLENT STRETCH FLANGEABILITY AND PRECISION PUNCHABILITY AND MANUFACTURING METHOD THEREOF - A high-strength cold-rolled steel sheet having excellent stretch flangeability and precision punchability containing predetermined components and a balance being composed of iron and inevitable impurities, in which in a range of ⅝ to ⅜ in sheet thickness from the surface of the steel sheet, an average value of pole densities of the {100}<011> to {223}<110> orientation group represented by respective crystal orientations of {100}<011>, {116}<110>, {114}<110>, {113}<110>, {112}<110>, {335}<110>, and {223}<110> is 6.5 or less, and a pole density of the {332}<113> crystal orientation is 5.0 or less, and a metal structure contains, in terms of an area ratio, greater than 5% of pearlite, the sum of bainite and martensite limited to less than 5%, and a balance composed of ferrite. | 07-10-2014 |
20140193588 | DEVICE FOR PRODUCING COATED STEEL SHEET AND METHOD FOR PRODUCING COATED STEEL SHEET - A device for producing a coated steel sheet includes: a blowing-off unit which sprays a gas onto and remove an excessive coating that accumulates along a side edge of a steel sheet that threads along one direction; and a coating-collection unit which collects the excessive coating removed by the blowing-off unit. The blowing-off unit includes a spray nozzle and a gas supply member. The coating-collection unit includes a duct and a coating container. In a case where the duct is seen in a plan view, an outlet thereof is disposed to fit in and overlap an inside of an opening of the coating container, and in a case where the duct is seen in a side view, a gap is provided between the outlet and the opening of the coating container. | 07-10-2014 |
20140191751 | MAGNETIC TESTING METHOD AND APPARATUS - A magnetic testing method and apparatus can accurately detect a flaw by magnetizing a test object to such a degree that the object becomes magnetically saturated while solving the problems of a large magnetizing device is required when only a DC magnetic field is applied and that the test object generates heat when only an AC magnetic field is applied. | 07-10-2014 |
20140191532 | SHOCK ABSORBING MEMBER - A hollow columnar shock absorbing member ( | 07-10-2014 |
20140190655 | CONTINUOUS CASTING APPARATUS FOR STEEL - A continuous casting apparatus for steel includes: a casting mold for casting a molten steel with a pair of long side walls and a pair of short side walls; a submerged entry nozzle which discharges the molten steel into the casting mold; and an electromagnetic stirring device which is disposed along each external surface of each of the long side walls and stirs an upper portion of the molten steel within the casting mold. A curved portion which is convexly curved toward the electromagnetic stirring device in plan view is formed at least at a position where the curved portion faces the submerged entry nozzle on each of the long side walls, and each of the long side walls including the curved portion has a uniform thickness. The shortest horizontal distance between a top which is a most depressed position when an internal surface of the curved portion is seen in plan view and an outer peripheral surface of the submerged entry nozzle is 30 mm to 80 mm in a range from a lower end portion of the electromagnetic stirring device to a position higher than an upper end portion thereof by 50 mm when viewed along a vertical direction. | 07-10-2014 |
20140186101 | AUSTENITIC STEEL WELDED JOINT - An austenitic steel welded joint is produced by gas tungsten arc welding an austenitic steel base metal with a welding material of austenitic steel having a composition comprising: C≦0.1%; Si≦0.8%; Mn: 1.5 to 5.5%; Ni: 8 to 15%; Cr: 18 to 24%; Al<0.05%; N: 0.15 to 0.35%; and one or more of V≦0.5%, Nb≦0.5%, and Mo≦4.5% if necessary, the balance being Fe and impurities that contain O≦0.02%, P≦0.05%, and S≦0.03%. The chemical composition satisfies [413−462(C+N)−9.2Si−8.1 Mn−13.7Cr−9.5Ni−18.5Mo≦−70]. The amount of ferrite of the weld metal is 20% or less in area ratio. The welded joint has high strength and excellent hydrogen embrittlement resistance and is useful in high-pressure hydrogen gas piping where no postweld heat treatment is performed. | 07-03-2014 |
20140183086 | THREE-PIECE RESEALABLE CAN - A three-piece resealable can for acidic liquid includes, a cylindrical can body member that includes a screw portion at one end; and a can bottom member that contacts the can body member so as to close an opening portion of the other end of the can body member. The can body member includes a cylindrical first steel sheet, Ni plating that is formed on an inner circumferential surface of the first steel sheet, a polyester film that is formed so as to be disposed on the outermost surface of the inner circumference of the can body member, and a Zr-containing film that is formed between the first steel sheet and the polyester film. The can bottom member includes a second steel sheet, and Sn plating that is formed on the can body member side of the can bottom member. The Zr-containing film contains Zr compounds. | 07-03-2014 |
20140182414 | STEEL FOR INDUCTION HARDENING AND CRANKSHAFT MANUFACTURED BY USING THE SAME - There is provided an induction hardening steel excellent in quenching crack resistance. The induction hardening steel of the present embodiment includes, by mass percent, C: 0.35 to 0.6%, Si: at least 0.01% and less than 0.40%, Mn: 1.0 to 2.0%, S: more than 0.010% and at most 0.05%, Cr: 0.01 to 0.5%, Al: 0.001 to 0.05%, N: Ti/3.4 to 0.02%, and Ti: 0.005 to 0.05%, the balance being Fe and impurities, and satisfies the following formula (1): | 07-03-2014 |
20140178242 | NON-POST-HEAT TREATED STEEL AND NON-POST-HEAT TREATED STEEL MEMBER - Non-post-heat treated steel contains: in mass %, C: 0.27 to 0.40%, Si: 0.15 to 0.70%, Mn: 0.55 to 1.50%, P: 0.010 to 0.070%, S: 0.05 to 0.15%, Cr: 0.10 to 0.60%, V: 0.030% or more and less than 0.150%, Ti: more than 0.10%, not more than 0.200%, Al: 0.002 to 0.050%, and N: 0.002 to 0.020%, and optionally one or more of Cu≦0.40% and Ni≦0.30%; the balance being Fe and impurities, wherein [Ti]−3.4[N]−1.5[S]<0, and 0.60<[C]+([Si]/10)+([Mn]/5)+(5[Cr]/22)+(33[V]/20)−(5[S]/7)<0.80. The steel can be used to make a high fatigue strength connecting rod for automobile engines which is fracture-split from a hot forged shape. The non-post-heat treated steel member can have vE | 06-26-2014 |
20140174867 | SHOCK ABSORBING MEMBER - A hollow columnar shock absorbing member ( | 06-26-2014 |
20140170440 | HIGH STRENGTH STEEL SHEET AND HIGH STRENGTH GALVANIZED STEEL SHEET EXCELLENT IN SHAPEABILITY AND METHODS OF PRODUCTION OF SAME - High strength steel sheet which secures tensile maximum strength 900 MPa or more high strength while having excellent shapeability, which high strength steel sheet which is excellent in shapeability characterized by having a predetermined composition of ingredients, by the steel sheet structure including a ferrite phase and martensite phase, by the ratio of Cu particles incoherent with the bcc iron being 15% or more with respect to the Cu particles as a whole, by a density of Cu particles in the ferrite phase being 1.0×10 | 06-19-2014 |
20140162088 | HIGH STRENGTH STEEL SHEET AND HIGH STRENGTH GALVANIZED STEEL SHEET EXCELLENT IN SHAPEABILITY AND METHODS OF PRODUCTION OF SAME - High strength steel sheet and high strength galvanized steel sheet which are excellent in shapeability which secure a tensile maximum strength 900 MPa or more high strength while obtaining excellent ductility and stretch flangeability, which sheets have predetermined compositions of ingredients, have steel sheet structures which contain volume fraction 1 to 20% of residual austenite phases, and which have martensite transformation points of the residual austenite phases of −60° C. or less. | 06-12-2014 |
20140161660 | TITANIUM ALLOY - A titanium alloy including by mass %, a platinum group metal: 0.01 to 0.15% and a rare earth metal: 0.001 to 0.10%, with the balance being Ti and impurities. The titanium alloy preferably includes as a partial replacement for Ti, Co: 0.05 to 1.00% by mass, and the content of the platinum group metal is preferably in the range of 0.01 to 0.05% by mass. Furthermore, it is preferred that the platinum group metal be Pd and the rare earth metal be Y. Consequently, it is possible to provide a titanium alloy having corrosion resistance comparable to or better than that of the conventional art as well as good workability while offering an economic advantage with a lower content of platinum group metal or an advantage of less likelihood of corrosion growth originating at defects such as flaws that occurred in the surface. | 06-12-2014 |
20140158015 | RAILWAY VEHICLE STEERING TRUCK - To prevent separation of a truck frame and a wheel axle and to continue supporting a vehicle, even if damage has occurred to a steering device of a steering truck in which front-back support of a steering axle is performed only by a steering mechanism. | 06-12-2014 |
20140144863 | DEVICE FOR COUPLING HIGH-SPEED RAILROAD CARS AND METHOD FOR REMOVING DEVICE - A device for coupling tilting railroad cars onto a high-speed railroad train comprises a coupler and a shock absorber held in a shock absorber frame, each joined by a coupling pin via a coupling joint. The frame includes a front inner surface with a front end wall opening and a cylindrical surface extending to a semi-circular concave inner surface. The joint includes a rounded convex surface engaged with a semi-circular concave surface, a circumferential surface of a short cylinder receiving the rear portion of the coupler, and an insertion hole which is provided in a direction perpendicular to the axis of the short cylinder. The frame has a removal hole and an air removal pin of the coupling pin facing each other at a position to rotate at a predetermined angle in a circumferential direction in the assembled state, and at a position coaxial with the coupling pin in the assembled state. | 05-29-2014 |
20140138427 | COMBINED STEEL SHEET PILE, DIAPHRAGM WALL, AND METHOD OF DISASSEMBLING COMBINED STEEL SHEET PILE - A method of disassembling a combined steel sheet pile in which a steel sheet pile and an H-shaped steel are joined to each other, in which, when viewed in a cross-section perpendicular to a longitudinal direction, in a weld zone formed by a fillet weld, the weld zone is cut off to leave a portion on a side which is closer to the steel sheet pile than a throat depth surface, and thereby the combined steel sheet pile is disassembled into the steel sheet pile and the H-shaped steel. | 05-22-2014 |
20140138054 | COOLING APPARATUS, AND MANUFACTURING APPARATUS AND MANUFACTURING METHOD OF HOT-ROLLED STEEL SHEET - Provided is a cooling apparatus discharging water smoothly corresponding to increase of volume density of cooling water securing a high cooling capability. The apparatus disposed on downstream side from a row of hot finish rolling mill, supplying cooling water from above toward a pass line, includes a plurality of cooling nozzles arranged parallel in a pass line direction, and an upper surface guide disposed between the pass line and the cooling nozzles, wherein a predetermined relation is satisfied when defining: a volume density of cooling water sprayed as q | 05-22-2014 |
20140137994 | AUSTENITIC STAINLESS STEEL AND METHOD FOR PRODUCING AUSTENITIC STAINLESS STEEL MATERIAL - Austenitic stainless steel having high temperature strength and excellent nitric acid corrosion resistance is provided. The austenitic stainless steel according to the present embodiment including, in mass percent, C: at most 0.050%, Si: 0.01 to 1.00%, Mn: 1.75 to 2.50%, P: at most 0.050%, S: at most 0.0100%, Ni: 20.00 to 24.00%, Cr: 23.00 to 27.00%, Mo: 1.80 to 3.20%, and N: 0.110 to 0.180%, the balance being Fe and impurities, a grain size number of crystal grains based on JIS G0551 (2005) is at least 6.0, and an area fraction of a σ phase is at most 0.1%. | 05-22-2014 |
20140137764 | RAILWAY VEHICLE STEERING TRUCK - In the event that a steering device is damaged, the damaged component is prevented from dropping onto a surface of a track or prevented from making contact with a surface of a track, even if a component to prevent dropping is not newly installed. | 05-22-2014 |
20140130441 | CONNECTING FITTING, FRAME PROVIDED WITH SAME, AND BUILDING USING FRAME - The connecting fitting comprises a band-like section | 05-15-2014 |
20140127531 | HIGH-CORROSION-RESISTANCE HOT-DIP GALVANIZED STEEL SHEET HAVING EXCELLENT APPEARANCE UNIFORMITY AND MANUFACTURING METHOD THEREOF - The present invention provides a high-corrosion-resistance hot-dip galvanized steel sheet having excellent appearance uniformity. The steel sheet includes: a coating layer containing Al: 4 to 22 mass %, Mg: 1 to 6 mass %, and Si: 0.001 to 1 mass %, and a balance being composed of Zn and inevitable impurities formed on a surface, in which at an interface between the coating layer and a base steel sheet, Mg | 05-08-2014 |
20140127073 | CARBURIZATION RESISTANT METAL MATERIAL - There is provided a carburization resistant metal material suitable as a raw material for cracking furnaces, reforming furnaces, heating furnaces, heat exchangers, etc. in petroleum and gas refining, chemical plants, and the like. This metal material consists of, by mass %, C: 0.03 to 0.075%, Si: 0.6 to 2.0%, Mn: 0.05 to 2.5%, P: 0.04% or less, S: 0.015% or less, Cr: higher than 16.0% and less than 20.0%, Ni: 20.0% or higher and less than 30.0%, Cu: 0.5 to 10.0%, Al: 0.15% or less, Ti: 0.15% or less, N: 0.005 to 0.20%, and O (oxygen): 0.02% or less, the balance being Fe and impurities. The metal material may further contain one kind or more kinds of Co, Mo, W, Ta, B, V, Zr, Nb, Hf, Mg, Ca, Y, La, Ce and Nd. | 05-08-2014 |
20140124101 | HIGH-STRENGTH HOT-ROLLED STEEL SHEET HAVING EXCELLENT LOCAL DEFORMABILITY AND MANUFACTURING METHOD THEREOF - This high-strength hot-rolled steel sheet having excellent local deformability contains, in mass %, C: 0.07% to 0.20%; Si: 0.001% to 2.5%; Mn: 0.01% to 4.0%; P: 0.001% to 0.15%; S: 0.0005% to 0.03%; Al: 0.001% to 2.0%; N: 0.0005% to 0.01%; and O: 0.0005% to 0.01%; and a balance being composed of iron and inevitable impurities, in which an area ratio of bainite in a metal structure is 95% or more, at a sheet thickness center portion being a range of 5/8 to 3/8 in sheet thickness from the surface of the steel sheet, an average value of pole densities of the {100}<011> to {223}<110> orientation group is 4.0 or less, and a pole density of the {332}<113> crystal orientation is 5.0 or less, and a mean volume diameter of crystal grains in the metal structure is 10 μm or less. | 05-08-2014 |
20140117595 | Cooling Apparatus of Thick-Gauge Steel Plate - A cooling method of a thick-gauge steel plate by spraying water from a plurality of spray nozzles on the top and bottom surfaces of the thick-gauge steel plate conveyed between the adjoining pairs of constraining rolls, each comprising a top roll and bottom roll, constraining and conveying the steel plate so as to efficiently cool the top and bottom surfaces of thick-gauge steel plate to secure symmetry of temperatures of the top and bottom surfaces and uniformity of temperature in the plate width direction and achieve improvement of flatness of thick-gauge steel plate and uniformity of quality. | 05-01-2014 |