Class / Patent application number | Description | Number of patent applications / Date published |
148625000 | Treating with specified agent (e.g., heat exchange agent, protective agent, decarburizing agent, denitriding agent, etc.) or vacuum | 10 |
148628000 | Using vacuum | 3 |
20100043928 | METHOD OF FORMING TEXTURE ON SURFACE OF IRON OR IRON-BASE ALLOY SHEET, METHOD OF MANUFACTURING NON-ORIENTED ELECTRICAL STEEL SHEET BY USING THE SAME AND NON-ORIENTED ELECTRICAL STEEL SHEET MANUFACTURED BY USING THE SAME - An iron or iron-base alloy sheet having high proportion of {100} texture and a method of manufacturing the same. A method of forming grains having {100} plane parallel to the sheet surface is disclosed. A Fe or Fe-base alloy sheet is annealed at austenite (γ) temperature while minimizing an effect of oxygen in the sheet or on surfaces of the sheet or a heat treatment atmosphere, and then the above sheet is subject to phase transformation to ferrite (α). On surfaces of the resulting sheet, a high proportion of {100} texture develops. A method of manufacturing electrical steel sheet is disclosed. The grains with {100} texture on surfaces grow to have a grain size of at least half the thickness of the sheet by a γ→α transformation. By adopting the above disclosed methods, an iron or iron-base alloy sheet with excellent texture can be simply manufactured within short time. | 02-25-2010 |
20110253270 | GUN BARREL OF FIREARMS - Gun barrel for firearms made from a deformed material and method for producing the gun barrel material. The material has a chemical composition in % by weight of: | 10-20-2011 |
20130037181 | INTEGRATED PROCESSING METHOD FOR SHEET STEEL HOT STAMPING AND HEAT TREATMENT - A processing method is provided integrating hot stamping and controllable subsequent heat treatment in the technical field of hot working for steels. It includes the steps of selecting and preparing a steel blank, hot stamping treatment, controllable temperature quenching, adjusting the temperature of the steel blank to a tempering temperature and fine stamping at the same time. The invention combines the hot stamping and controllable heat treatment to improve the strength of material with precise plastic deformation and save energy as well. The tensile strength of the processed steel is greater than 1900 Ma. | 02-14-2013 |
148629000 | Decarburizing or denitriding | 1 |
20130133791 | METHOD FOR DECARBURIZATION OF ROTOR FORGING - Disclosed herein is a method for decarburization of a rotor forging. In one aspect, a location for applying a weld prep to a rotor forging is identified. The rotor forging is decarburized at the identified location of the weld prep to attain a predetermined carbon content. | 05-30-2013 |
148633000 | Gaseous agent | 2 |
148634000 | Hydrogen | 2 |
20100065167 | ANNEALING AND PICKLING PROCESS - A continuous annealing and pickling process of flat cold-rolled products, such as stainless steel strips, to obtain a high surface quality product at high production rates and with a low environmental impact. It comprises the following steps: heating, up to a temperature comprised in the range 650-1050° C., in an atmosphere with an oxygen content comprised in the range from 0.5 to 12%; heating for a time comprised from 10 to 200 sec up to a temperature comprised in the range from 650 to 1200° C. in presence of oxidizing agents and/or inert agents; cooling down to temperatures comprised in the range from 650° C. to ambient tempera in presence of oxidizing agents and/or inert agents; thermochemical or electrolytic descaling and finally possible pickling and/or passivation, by means of the use of pickling baths consisting of mineral acid solutions. | 03-18-2010 |
20110139321 | AUSTENITIC STAINLESS STEEL, AND HYDROGENATION METHOD THEREOF - Disclosed are an austenitic stainless steel, and a hydrogenation method thereof, in which occurrence of fatigue cracks and growth of fatigue cracks are suppressed by charging the austenitic stainless steel with hydrogen. | 06-16-2011 |
148636000 | Liquid agent | 4 |
20150027600 | SI-CONTAINING HIGH-STRENGTH COLD ROLLED STEEL SHEET, METHOD OF PRODUCING THE SAME, AND AUTOMOTIVE MEMBERS (AS AMENDED) - A Si-containing high-strength cold rolled steel sheet has a chemical composition comprising C: 0.0˜20.3 mass %, Si: 0.8˜2.0 mass %, Mn: 1.0˜5.0 mass % and the remainder being Fe and inevitable impurities with a ratio of Si content to Mn content (Si/Mn) exceeding 0.4, and has a tensile strength TS of not less than 780 MPa, wherein a metallic structure of the steel sheet surface contains polygonal ferrite and/or bainitic ferrite having a Si concentration of not more than 3.0 mass % and a grain size of not more than 10 μm and does not have a Si-containing oxide layer on the steel sheet surface. | 01-29-2015 |
148637000 | And cooling or quenching | 3 |
20140090754 | Multimedia Quench System and Process - A process and apparatus for quenching a metal workload from an elevated heat treating temperature are disclosed. The process includes the step of flowing a vegetable oil quenchant over the metal workload to provide a cooling rate sufficient to transform the metal substantially completely to a desired second phase comprising martensite, bainite, pearlite, or a combination thereof within a preselected time period. The apparatus includes a quenching chamber that has a base, an upper housing, a door, and an associated actuator for opening and closing the quenching chamber. The apparatus also includes a vessel for holding a volume of a vegetable oil quenchant, means for conducting the vegetable oil quenchant from the vessel to the quenching chamber, and means disposed in the quenching chamber for flowing the vegetable oil quenchant over a metal workload disposed in the quenching chamber. | 04-03-2014 |
20160053355 | STEEL MATERIAL, HYDROGEN CONTAINER, METHOD FOR PRODUCING THE STEEL MATERIAL, AND METHOD FOR PRODUCING THE HYDROGEN CONTAINER (AS AMENDED) - A steel material includes: a composition containing, by mass, C: 0.05% to 0.60%, Si: 0.01% to 2.0%, Mn: 0.3% to 3.0%, P: 0.001% to 0.040%, S: 0.0001% to 0.010%, N: 0.0001% to 0.0060%, Al: 0.01% to 1.5%, one or more elements selected from Ti: 0.01% to 0.20%, Nb: 0.01% to 0.20%, and V: 0.01% or more and less than 0.05%, and one or more elements selected from B: 0.0001% to 0.01%, Mo: 0.005% to 2.0%, and Cr: 0.005% to 3.0%, with the balance being Fe and inevitable impurities; and a steel microstructure that includes 95% or more of tempered martensite on a volume fraction basis, that includes a precipitate having a diameter of 100 nm or less and including one or more elements selected from Ti, Nb, and V and one or more elements selected from carbon and nitrogen at a density of 50 particles/μm | 02-25-2016 |
148638000 | Treating composition contains water | 1 |
20090065107 | POLYMERIC QUENCHANT, MANUFACTURE THEREOF, AND METHOD FOR QUENCHING STEEL - A polymeric quenchant. The polymeric quenchant comprises an inorganic nanoparticle, a water-soluble polymer, and water, wherein a weight ratio of the inorganic nanoparticle, water-soluble polymer and water is about 0.05-5:1-5:100. The cooling rate of steel during a quenching process can be adjusted by regulating the components and ratios of the adjusted by regulating the components and ratios of the polymeric quenchant to achieve desirable steel properties. | 03-12-2009 |