| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 427327000 | Metal base | 42 |
| 20080274289 | Mold Device and Method of Manufacturing Cylinder Block - A mold device and a method of manufacturing a cylinder block. The mold device comprises a split core having two first split cores formed so that the tip parts thereof may be in a tapering shape, two second split cores installed between the first spilt cores, and an inner core is installed at the center part and pushing out the first split cores in the direction receding from the center axis thereof. When the inner core is pushed out to push out and position the first spilt cores, both end parts of the second split cores are brought into contact with the tip parts of the adjacent first split cores, and the outer side-faces of the first split cores and the outer side-faces of the second split cores form a cylindrical shape. When the inner core is raised, the first split cores and the second split cores are pulled to the axial center by first engagement pieces and second engagement pieces. | 11-06-2008 |
| 20080280046 | PROCESS FOR TREATING METAL SURFACES - The corrosion resistance of a metal substrate surface treated with an acidic aqueous composition to form a conversion coating is improved by first contacting the surface with an oxidizing acidic pre-rinse, such as an aqueous solution of nitric acid and hydrogen peroxide, or nitric acid and hydrofluoric acid, or Fe | 11-13-2008 |
| 20080286470 | CHEMICAL CONVERSION COATING AGENT AND SURFACE-TREATED METAL - It is an object of the present invention to provide a chemical conversion coating agent which places a less burden on the environment and can apply good chemical conversion treatment to all metals such as iron, zinc and aluminum. | 11-20-2008 |
| 20090011132 | Biodegradable Cleaner - The present invention is a cleaning composition for use with firearms and industrial items in which all of the components of the composition are biodegradable. The selected components of the composition also have a combined flashpoint of over 200° F. The low volatility of the composition enhances the safety factor by its reduced flammability in conjunction with the low odor and other benefits obtained by the biodegradability of the composition. The composition essentially comprises a hydrocarbon solvent and a lubricant which effectively removes the fouling present within the interior arm of a firearm bore and at the same time lubricates and protects the firearm bore to help prevent the formation of rust. | 01-08-2009 |
| 20090117281 | Coated Metal Pigment, Method for Production of the Same, and Coating Composition Containing the Same - Provided are a coated metal pigment which can satisfy both the coating stability in use as an aqueous coating, i.e., water resistance, and the chemical resistance of coating films produced by application thereof at practically satisfactory levels; a method for producing the same; and an aqueous coating containing the same. The invention relates to a coated metal pigment including a metal pigment and a composite coating layer, wherein the composite coating layer includes an adhesion layer which is disposed on the surface of the metal pigment either in contact with the metal pigment or at an interposition of another layer and contains polysiloxane and/or silica, and a resin layer which is disposed on the surface of the adhesion layer either in contact with the adhesion layer or at an interposition of another layer. | 05-07-2009 |
| 20090324834 | Compositions for providing hydrophobic layers to metallic substrates - A composition and method for forming a hydrophobic coating on a metallic substrate are disclosed. The composition comprises:
| 12-31-2009 |
| 20100009083 | CHROMIUM-FREE CONVERSION COATING - A chromium-free conversion coating is prepared by the addition of inorganic salts to dispersions of conducting polymers which are then exposed to alloys of aluminum or other metals. Advantageously, the performance of the coating is comparable to that of known Cr (chromium)-based methods for a number of aluminum alloys having particular significance in the manufacture of aircraft. | 01-14-2010 |
| 20100015339 | SILANE-CONTAINING CORROSION PROTECTION COATINGS - A metal surface can be corrosion protected by coating a corrosion protection composition on the metal surface, thereby obtaining a coating; and curing said coating at a temperature of from 20 to 120° C., to obtain a cured coating; wherein said corrosion protection composition comprises a condensated and hydrolyzed oligomer and/or polymer of at least one functionalized silane. | 01-21-2010 |
| 20100028541 | SURFACE TREATMENT LIQUID FOR ZINC-BASED METAL MATERIAL AND METHOD FOR SURFACE-TREATING ZINC-BASED METAL MATERIAL - Disclosed is a surface treatment liquid containing no chromium compound, which is capable of imparting a zinc-based material with adequate corrosion resistance without coating, namely adequate bare corrosion resistance. Specifically disclosed is a surface treatment liquid for zinc-based metal materials, which contains the following component (A) and component (B): (A) at least one metal element selected from the group consisting of Ti, Zr and Hf; and (B) at least one compound selected from the group consisting of allylamino compounds, imino compounds, amino polysaccharides, amino-modified phenols and derivatives of them. The total concentration of the metal elements of the component (A) is 500-2000 mg/L, and the total concentration of the compounds of the component (B) is 300-3000 mg/L. | 02-04-2010 |
| 20100068392 | PROCESS FOR THE DEMULSIFYING CLEANING OF METALLIC SURFACES - The demulsifying cleaning of metallic surfaces which may be contaminated with oil(s) with at least one further nonpolar organic compound, with fat(s), with soap(s), with particulate dirt or with at least one anionic organic compound using an aqueous, alkaline, surfactant-containing bath solutions. | 03-18-2010 |
| 20110020551 | SUBSTRATE COATED WITH A LAYERED STRUCTURE COMPRISING A TETRAHEDRAL CARBON COATING - The invention relates to a metal substrate ( | 01-27-2011 |
| 20110064881 | PLASTIC ELECTRONIC COMPONENT PACKAGE - A plastic package for an image sensor or other electronic component which comprises a plastic body, preferably of LCP material, molded around a leadframe and defining a cavity in which the image sensor is to be disposed. A lid assembly is provided having a transparent glass lid retained in a plastic lid frame which is weldable or otherwise bondable to the plastic body of the package to enclose the image sensor mounted in the cavity. The leadframe is usually composed of copper or a copper alloy, or a ferrous alloy having a copper coating. An interfacial layer is formed on the surfaces of the leadframe at least in those portions which are in contact with the plastic body which serves to provide substantially improved adhesion between the leadframe and the plastic material to achieve a hermetic bond between the metal and plastic materials. The interfacial layer is composed of a cuprous oxide base layer formed on a surface of the leadframe, and a cupric oxide layer formed on the cuprous oxide layer. The cupric oxide outer layer has an acicular structure which provides an interlocking mechanism for adhesion to the plastic material molded thereto in forming the package. | 03-17-2011 |
| 20110200754 | CORROSION RESISTANT PRIMER COATING - A corrosion resistant primer coating comprises one or more corrosion inhibiting additives; and one or more nonaqueous resins, and the method of making and using the primer coating. The corrosion inhibiting additive comprises metal ferrate(IV) compounds, metal ferrate(V) compounds, metal ferrate(VI) compounds, or a mixture thereof (collectively called the ferrate compound). The ferrate compound has a low solubility in water in the range of about 0.001 ppm to about 2000 ppm at a temperature in the range of about 0° C. to 71° C. | 08-18-2011 |
| 20110256318 | PROCESS FOR PREPARING AND TREATING A SUBSTRATE - Processes for preparing and treating a substrate are disclosed. A process includes: a) applying a cleaning solution comprising at least an organic acid to at least a portion of the substrate; (b) rinsing at least a portion of the cleaning solution with a first rinsing step; (c) applying a chemical cleaner composition onto a portion of the substrate subjected to step (b); (d) rinsing at least a portion of the substrate with the chemical cleaner composition of step (c) with a second rinsing step; and (e) depositing a pretreatment coating composition onto at least a portion of the substrate subjected to step (d). Additional steps include (f) rinsing at least a portion of the substrate with the pretreatment coating composition with a third rinsing step; and (g) depositing a protective coating composition onto the substrate subjected to step (f). Additional processes including similar steps in different arrangements are also disclosed. | 10-20-2011 |
| 20110305840 | CHEMICAL CONVERSION TREATMENT LIQUID FOR METALLIC MATERIAL AND PROCESS FOR TREATMENT - A zinc phosphate chemical conversion treatment liquid comprising 500 to 4,000 ppm of phosphate ions and 300 to 1,200 ppm of zinc ions, as a treatment liquid for depositing a zinc phosphate coating over the metallic material through chemical conversion treatment, wherein coefficient K (K=10 | 12-15-2011 |
| 20110311727 | WELDABLE PRE-PRIMED COATING COMPOSITION FOR AUTOMOTIVE OEM AND COATING METHOD THEREOF - The present invention relates to a weldable pre-primed coating composition, comprising binder resins, a crosslinker, an anti-corrosive pigment, conductive metal powder, carbon nanotubes, etc. The coating composition can be applied to a metal sheet before processing of the metal sheet to maximize the weldability, adhesion, corrosion resistance and processability of the metal sheet. Also, the coating composition can be applied to a metal sheet by a roll coating process to make it possible to eliminate not only an existing electrodeposition process which is carried out by a non-environmentally-friendly wet dipping process, but also an existing electrostatic spray primer coating process which is carried out by an electrostatic spray coating process in which a solvent is scattered, whereby the metal sheet coated with the coating composition has very excellent formability and weldability after its processing. Accordingly, the composition makes it possible to reduce the number of complex automotive coating processes, thereby greatly contributing an increase in productivity, a reduction in energy and an improvement in a work environment. | 12-22-2011 |
| 20120076940 | METHODS FOR TREATING A FERROUS METAL SUBSTRATE - Disclosed are methods for treating and coating a ferrous metal substrate, such as cold rolled steel, hot rolled steel, and electrogalvanized steel. These methods include contacting the ferrous metal substrate with an aqueous pretreatment composition comprising: (a) a Group IIIB and/or IVB metal compound; (b) phosphate ions; and (c) water. | 03-29-2012 |
| 20120308727 | CLEANER COMPOSITION FOR FORMED METAL ARTICLES - The present invention discloses an improved cleaning composition for cleaning metal surfaces such as aluminum and aluminum-containing alloys. The cleaning composition of the present invention comprises water and an ethoxylate of an alcohol having Formula R | 12-06-2012 |
| 20120321803 | COMPOSITIONS OF METAL OXIDES FUNCTIONALISED BY OLIGOMER SILOXANOLS AND USE THEREOF - The invention relates to a method for producing aqueous, essentially solvent-free compositions based on pyrogenous metal oxides functionalised by oligomer siloxanols, to the corresponding compositions, and to the use thereof for corrosion protection and adherence. | 12-20-2012 |
| 20130022748 | ENVIRONMENTALLY FRIENDLY WATER-BASED EPOXY RESIN COMPOSITION AND A USE THEREFOR - The present invention relates to am aqueous epoxy resin composition, and to an aqueous epoxy resin composition which is able to contain a large amount of water because it uses an epoxy resin and a coagulant and thereby allows an emulsifier and water to be stably adsorbed and captured on tangled particle surfaces of the coagulant. The aqueous epoxy resin composition according to the present invention comprises a highly compatible formulation producing a good cross-linking bond in a curing reaction with a curing agent and hence it can effect functions including those of a coating agent, a primer agent, a mortar agent and an adhesive agent in a two-part formulation, and it entails a formulation using absolutely no volatile organic compounds in large amounts as is the case with prior-art epoxy resin composition and hence it is environment-friendly and can also markedly reduce production costs. | 01-24-2013 |
| 20130078380 | METHOD OF UNDERCOATING A SUSPENSION AND UNDERCARRIAGE AREA - A method of coating an undercarriage of a cargo carrying vehicle, the method comprising the steps of applying primer to at least a portion of the suspension or the undercarriage, wherein the primer is either epoxy, alkyd or modified alkyd, and applying polyurea/polyurethane blend to at least a portion of the primer. | 03-28-2013 |
| 20130202800 | COMPOSITION FOR THE ALKALINE PASSIVATION OF ZINC SURFACES - The present invention relates to an aqueous alkaline composition (A) for alkaline passivation of metallic components comprising at least in part surfaces of zinc or zinc alloys, containing iron(III) ions, phosphate ions, and one or more complexing agents, where a free alkalinity ranges from 1 to 6 points, and the pH is at least 11. The aqueous compositions (A) can additionally contain nonionic surfactants, so that such compositions are suitable for use in a method in which both cleaning and alkaline passivation of the metallic component occur in one step. The present invention further relates to a method for alkaline passivation of metallic components by contacting them with composition (A), and further a method for surface treatment in automobile body production, in which the alkaline passivation step using composition (A) is followed by an acid passivation step using a composition (B). | 08-08-2013 |
| 20130209690 | METHOD FOR THE CORROSION-INHIBITING COATING OF METAL SURFACES USING PHOSPHORUS-CONTAINING POLYESTER - The invention relates to a method for the corrosion-inhibiting coating of metal surfaces, which in a first step involves cleaning the metal surface and optionally treating it with a pretreatment composition and in a second step involves coating the metal surface cleaned and optionally pretreated in step (1) with a primer (P) which comprises at least one binder (BM) and at least one crosslinking agent (V), and also at least one phosphorus-containing polyester component (A), (A) being an acidic esterification product of phosphonic acid, of monophosphoric acid and/or of polyphosphoric acid, and/or of the anhydrides thereof and/or of the esters thereof, with at least one polyester (B) which contains at least two hydroxyl groups. | 08-15-2013 |
| 20140044877 | INORGANIC PHOSPHATE CORROSION RESISTANT COATINGS - This disclosure relates to phosphate coatings that inhibit corrosion of metals, specifically coatings comprising acidic phosphate and alkaline metal oxide/hydroxide components. In one particular embodiment, phosphate-based coating formulations that reduce or eliminate corrosion of steel and other metals are disclosed. In other embodiments, methods for coating steel surfaces with acidic phosphate and alkaline metal oxide/hydroxide components to reduce or eliminate corrosion of the metal surfaces are disclosed. | 02-13-2014 |
| 20140050855 | PROCESS AND COMPOSITION FOR TREATING METAL SURFACES USING TRIVALENT CHROMIUM COMPOUNDS - An acidic, aqueous composition contains a trivalent chromium compound, an organo-functional silane, and a compound of a group IV-B element. The composition protects metal surfaces, preferably aluminum and aluminum alloys, against corrosion and improves their paint adhesion. The trivalent chromium compound may comprise chromium fluoride and optionally others, such as chromium nitrate. The organo-functional silane is preferably an aminopropyltriethoxy silane, and the compound of a group IV-B element is preferably fluorozirconic acid. The composition can either be dried-in-place or rinsed before a further coating layer is applied. The composition may also include at least one polymer having a plurality of both carboxylic functional groups, alone or with hydroxyl groups. A process uses the aqueous composition either with or without the organo-functional silane along with a sealing step following the application of the aqueous composition; the sealing step involves applying a sealing composition, including an organo-functional silane, to the metal surface. | 02-20-2014 |
| 20140141169 | METHOD FOR PROVIDING ORGANIC RESIST ADHESION TO A COPPER OR COPPER ALLOY SURFACE - The present invention relates to a method for increasing the adhesion of organic resist materials on copper or copper alloy surfaces. The copper or copper alloy surface is contacted with an aqueous adhesion promoting solution comprising at least one organic acid, a peroxide compound and optionally one or more substances selected from the group consisting of urea, derivatives thereof and water-soluble polymers. | 05-22-2014 |
| 20140178591 | EASY CLEAN COATING APPLIED ON STAINLESS STEEL METALLIC SURFACES USED IN THE MANUFACTURE OF HOUSEHOLD APPLIANCES - The present invention related to a silicon based coating suitable for being applied onto metallic surfaces of a household appliance. The coating of the present invention protects the metallic surfaces of the household appliance against the yellowing or changes in color, through temperatures, among other factors, and eases the cleaning of the same. | 06-26-2014 |
| 20140329016 | Coating Method for Objects of Extended Size - This invention discloses a metal coating method whereby an abrasion resistant and wear resistant coating is first applied to the that portion of a metal object of extended size to be protected, the coating is then fused onto the metal object with the use of a temperature controlled induction heater, which results in a metal object, at least a portion of which is more abrasion resistant and wear resistant than the uncoated metal object. | 11-06-2014 |
| 20150337074 | COATING COMPOSITIONS FOR COIL COATING, METHODS FOR MAKING SUCH COATING COMPOSITIONS AND COIL COATING METHODS - Coating compositions for coil coating, methods for making such coating compositions and coil coating methods are provided. In an exemplary embodiment, a coating composition includes an aqueous carrier and a film-forming binder dispersed in the aqueous carrier. The film-forming binder contains an epoxy-amine adduct and a blocked polyisocyanate crosslinking agent. The film-forming binder has associated amine/acid groups until subjected to heat of at least about 165.5° C. (330° F.). The coating composition also contains a pigment and a grinding resin. The coating composition has a solids content of at least about 40 wt. % based on a total weight of the coating composition. | 11-26-2015 |
| 20150354063 | SURFACE TREATMENT PROCESS OF STAINLESS STEEL - The disclosure relates to a coating process of a stainless steel surface, wherein the surface is first treated/degreased with an acidic treatment and a basic treatment and then coated with a first layer based on a silicate of an alkaline metal or an alkaline-earth metal and a methyloxirane polymer and a second layer comprising silicon dioxide, trimethoxymethylsilane and an emulsifier. The disclosure further relates to a surface of kitchen components, household electrical appliances or kitchen utensils made of stainless steel coated with the coating process of the invention. The kitchen component is a cooker hob, a work top, a sink or a cooker hood made of stainless steel. | 12-10-2015 |
| 20160145442 | METHODS OF PRE-TREATING EQUIPMENT USED IN WATER SYSTEMS - Methods for preventing corrosion of equipment having a corrodible metal surface that contacts water in a water system, the method comprising pre-treating the corrodible metal surface before the equipment is brought into service in the water system, the pre-treating including contacting a stannous corrosion inhibitor with the corrodible metal surface, wherein the stannous corrosion inhibitor is provided in sufficient amount and for sufficient time to form a protective film on at least a portion of the corrodible metal surface. | 05-26-2016 |
| 20160251602 | METHOD OF TREATING A METAL SUBSTRATE | 09-01-2016 |
| 427328000 | Metal coating | 10 |
| 20100080918 | Surface treatment method for magnesium alloy - The present invention provides a surface treatment method for magnesium alloy, which comprising the following steps: 1) preparation; 2) fusion and uniformly coating; 3) heat diffusion, and 4) finish; so a coating alloy is placed on a magnesium alloy substrate, and the magnesium alloy substrate is heated so that the coating alloy is uniformly melted on the magnesium alloy substrate; when heating up to a preset temperature, the coating alloy generates heat diffusion on the magnesium alloy substrate; the coating alloy finally forms a corrosion-resistant hard layer on the magnesium alloy substrate. So, this invention features simple treatment process, stable structure and environmental-friendliness in a wide range of applications. | 04-01-2010 |
| 20100266772 | METHODS OF FORMING COATING SYSTEMS ON SUPERALLOY TURBINE AIRFOILS - Methods are provided for forming coating systems on advanced single crystal superalloy turbine airfoils. A method includes applying a layer of an additive material onto a substrate, the additive material comprising a precious metal and the substrate comprising a nickel-based superalloy, diffusion heat treating the substrate to form an intermetallic coating which comprises γ-Ni and γ′-Ni | 10-21-2010 |
| 20130129924 | HOT DIP GALVANNEALED STEEL SHEET AND METHOD FOR PRODUCING THE SAME - Exemplary embodiments of the present invention can provide a hot dip galvannealed steel sheet which has excellent corrosion resistance, workability, coatability and appearance. The exemplary galvannealed sheet can include an ultra-low carbon steel sheet having a plating layer which includes about 8 to 13% Fe, about 0.05 to 1.0% Ni, about 0.15 to 1.5% Al, and a balance of Zn and unavoidable impurities. An exemplary method for producing a hot dip galvannealed steel sheet is also provided which can include cleaning an annealed ultra-low carbon steel sheet, preplating it with Ni, rapidly heating the sheet in a nonoxidizing or reducing atmosphere, plating the sheet in a galvanization bath containing Al, wiping it, then rapidly reheating it and either cooling the sheet without any soaking time or soaking and holding it for less than 15 seconds and then cooling it. | 05-23-2013 |
| 20130309405 | PLATING PRETREATMENT SOLUTION AND METHOD FOR PRODUCING ALUMINUM SUBSTRATE FOR HARD DISK DEVICES USING SAME - An object of the invention is to provide a plating pretreatment solution that can convert the surface of an aluminum substrate for hard disk devices into a surface suitable for electroless nickel plating, and a method for producing an aluminum substrate for hard disk devices using the same. The plating pretreatment solution of the present invention used for a plating pretreatment in production of an aluminum substrate for hard disk devices has an iron ion concentration of 0.1 g/l to 1.0 g/l and a nitric acid concentration of 2.0 wt % to 12.0 wt %. This plating pretreatment solution is used for a pretreatment of a plating step in which electroless nickel plating is applied to an aluminum substrate for hard disk devices. Accordingly, the surface of the aluminum substrate for hard disk devices is converted into a surface suitable for electroless Ni plating, and a smooth surface of a plated film is obtained by suppressing generation of waviness, nodules, and pits on the plated surface when electroless nickel plating is performed in the plating step. | 11-21-2013 |
| 20150064354 | Cr(VI)-FREE CORROSION PROTECTION LAYERS OR ADHESION PROMOTER LAYERS PRODUCED USING A SOLUTION COMPRISING PHOSPHATE IONS AND METAL POWDER, WHEREIN THE METAL POWDER IS COATED AT LEAST PARTLY WITH Si OR Si ALLOYS - The present invention relates to a coating material for the production of an anti-corrosion and/or adhesion promoter layer, which material comprises metal powder and a phosphate-ion-containing solution as the binder, the metal powder being at least partially coated with Si or Si alloys or the binder consisting of phosphoric acid and metal phosphates and being substantially free of chromates. The invention further relates to a method for producing an anti-corrosion and/or adhesion promoter layer, comprising the following steps: Providing a coating material, such as indicated above, applying the coating material to a component surface on which the anti-corrosion and/or adhesion promoter layer is to be created, and drying and/or hardening by way of a heat treatment at a first temperature. | 03-05-2015 |
| 20150132493 | Double Cut Single Point Cutoff Tool For Cutting And Finishing An End Surface Of A Fuel Injector Pole Piece - A method removes a fuel injector pole piece from bar stock and provides a cutoff tool having a first cutting surface and a second cutting surface separate from the first cutting surface. The pole piece and bar stock are caused to rotate about a longitudinal axis. The tool is advanced with respect to the pole piece so that the first cutting surface severs the pole piece from the bar stock and defines an unfinished end surface of the pole piece, with a certain cutting force being exerted on the tool. The tool is further advanced with respect to the pole piece so that the second cutting surface removes material from the unfinished end surface to define a finished end surface of the pole piece, with a cutting force on the tool being substantially less than the certain cutting force. | 05-14-2015 |
| 20160108260 | AQUEOUS STRIPPING COMPOSITION FOR METAL SURFACES - The invention relates to an aqueous stripping composition for the removal of polymeric surface sealants on metal surfaces, said stripping composition comprising an alkalizing agent, a polymer splitting agent, a swelling agent, and a cloud point booster, wherein said polymer splitting agent is at least one gluconate wherein said swelling agent is at least one compound selected from the group consisting of glycol ethers and aliphatic alcohols having 3 to 9 carbon atoms. The inventive aqueous stripping composition is capable to remove polymeric sealants like e.g. polyurethane sealants, polyethylene sealants, polyethylene waxes, polyacrylic sealants, polysilicate sealants, and the like. | 04-21-2016 |
| 427329000 | Molten metal bath utilized | 3 |
| 20120213932 | CONTROLLED THICKNESS REDUCTION FOR HOT-DIP COATED, HOT-ROLLED STEEL STRIP AND INSTALLATION USED IN THIS PROCESS - The invention relates to a method for hot-dip coating hot-rolled steel strip, during which the steel strip passes through a pickling station, a rinsing station, a drying station, a heating furnace and then through a molten bath. The final thickness and the thickness tolerance of the hot-dip coated steel strip are achieved by a controlled thickness reduction in a roll stand in the process line. The achievement of the finished thickness is controlled by at least one thickness measuring unit at the outlet of the roll stand, and deviations upward or downward therefrom are fed back in the form of an actuating signal for actuating the roll stand in order to appropriately increase or decrease the thickness reduction. The invention also relates to an installation for producing a steel strip of the aforementioned type. | 08-23-2012 |
| 20130202801 | PRODUCTION METHOD OF HOT ROLLED STEEL SHEET AND PRODUCTION METHOD OF HOT-DIP GALVANIZED STEEL SHEET - A method for producing a hot rolled steel sheet includes a slab heating step of heating a steel slab in a slab heating furnace, a step of hot-rolling the heated steel slab in a rough rolling mill to form a strip and a finish rolling mill, and a coiling step of coiling the strip around a coiler. The atmosphere in steps from the slab heating step to the coiling step is a non-oxidizing atmosphere. The slab steel contains C: 0.01-0.15%, Si: 0.1-1.8%, Mn: 1.0-2.7%, Al: 0.01-1.5%, P: 0.005-0.025%, and S: 0.01% or less, by mass. A hot-dip galvanized steel sheet is produced by pickling the hot rolled steel sheet to remove mill scale, or by pickling the sheet and further cold-rolling the sheet, and subsequently by subjecting the resultant to hot-dip galvanizing. | 08-08-2013 |
| 20140199487 | METHOD FOR PRODUCING HIGH-STRENGTH HOT-DIP GALVANNEALED STEEL SHEET - Exemplary embodiments of the present invention can provide a method for producing hot dip galvannealed steel sheet which exhibits high strength, high ductility, and a significant degree of alloying. Such exemplary method can be applied to, e.g., a pickled hot rolled steel sheet or an annealed and pickled cold rolled steel sheet containing between about 0.02% and about 0.2% C and between about 0.15% and about 2.5% Mn, and may include one or more procedures for rinsing the sheet, preplating the sheet with Ni, rapidly heating the sheet in a nonoxidizing atmosphere to a sheet temperature of about 430° C. to 500° C., then hot dip plating the sheet in a galvanizing bath containing between about 0.05% and about 0.2% Al, and then immediately heating the sheet rapidly for an alloying treatment. Such exemplary method can provide an improved alloying speed, improved plating appearance and better plating adhesion. | 07-17-2014 |
