| Patents for C21D 6 - Heat treatment of ferrous alloys (4,815) |
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| 12/02/2009 | CN101591753A Heat-resistant and wear-resistant vulcanized rare earth alloy steel as well as preparation method and application thereof |
| 12/02/2009 | CN101591727A Heat treatment method for low-carbon alloy steel forging blank |
| 12/01/2009 | US7625455 Utilizing preheating stage to form thin surface oxide film; reducing pickling time; enhancing radiation heat transfer |
| 11/26/2009 | US20090291013 Method of designing a low cost, high strength, high toughness, martensitic steel and an article made thereof |
| 11/26/2009 | US20090288743 Polymeric quenchant, manufacture thereof, and method for quenching steel |
| 11/26/2009 | US20090288742 Method for increasing the fatigue strength of a predominantly steel mechanical part of a wind turbine and/or for reducing the tendency to form what are called "white etching cracks" or "brittle flakes" in such steel mechanical parts |
| 11/25/2009 | CN100562678C Method of manufacturing metal gasket |
| 11/25/2009 | CN100562601C High-strength hot-dip galvanized steel sheet and hot-dip galvannealed steel sheet having fatigue resistance, corrosion resistance, ductility and plating adhesion, after severe deformation, and a metho |
| 11/19/2009 | WO2009139420A1 High‑strength low‑alloy steel with excellent environmental embrittlement resistance in high‑pressure hydrogen environments, and method of manufacture thereof |
| 11/19/2009 | WO2009116933A9 Steel, process for the manufacture of a steel blank and process for the manufacture of a component of the steel |
| 11/17/2009 | US7618503 Method for improving the performance of seam-welded joints using post-weld heat treatment |
| 11/12/2009 | US20090277547 High-strength steel sheets and processes for production of the same |
| 11/12/2009 | US20090277542 Steel material for automobile chassis parts superior in fatigue characteristics and method of production of automobile chassis parts using the same |
| 11/11/2009 | CN201343554Y Cryogenic treatment system for workpieces |
| 11/11/2009 | CN100558926C Steel for plastic molds and process of heat treatment thereof |
| 11/11/2009 | CN100558916C Stainless steel sheet for gasket and method for producing same |
| 11/10/2009 | CA2397953C Method for producing angular, stainless shot-blasting abrasives based on fe-cr-c alloy |
| 11/05/2009 | WO2009133945A1 Alloy and method for producing alloy |
| 11/05/2009 | US20090275435 Link Chain Superior in Low Temperature Toughness and Heat Treatment Method of Same |
| 11/04/2009 | EP1290236B1 Welding method, filler metal composition and article made therefrom |
| 10/29/2009 | US20090266454 Method of Diffusion Zinc Coating |
| 10/29/2009 | CA2715998A1 Lower-cost, ultra-high-strength, high-toughness steel |
| 10/28/2009 | EP2112245A1 Ferritic stainless steel for exhaust gas passage member |
| 10/28/2009 | EP2112237A1 Development of a very high resistance to sensitization in austenitic stainless steel through special heat treatment resulting in grain boundary microstructural modification |
| 10/28/2009 | EP1481102B1 Method of heat treatment of stainless steel. |
| 10/28/2009 | EP1382701B1 Ferritic heat-resistant steel and method for production thereof |
| 10/28/2009 | CN101565798A Ascalloy and manufacturing method thereof |
| 10/28/2009 | CN101565793A Alloy ductile iron crankshaft and heat treatment process thereof |
| 10/27/2009 | US7608155 A hot dip coated dual phase steel sheet having excellent formability (a low yield strength/tensile strength ratio <== about 70%), impact strength, weldability, toughness,and crash resistance; microstructure of ferrite and martensite; excellent surface quality under processing; lightweight; durability |
| 10/22/2009 | WO2009129389A1 Cryogenic treatment systems and processes for grinding wheels and bonded abrasive tools |
| 10/22/2009 | US20090263269 Austenitic stainless steel and process for removing hydrogen therefrom |
| 10/22/2009 | US20090260728 Method and installation for producing hot-rolled strip from austenitic stainless steels |
| 10/21/2009 | CN101563470A Method for manufacturing tool steel |
| 10/21/2009 | CN101560592A Circulating phase-transition crystal grain thinning technology of micro-boron cobalt-free maraging steel |
| 10/21/2009 | CN101560591A Composite temperature cold treatment process |
| 10/15/2009 | WO2009125671A1 R-t-b-base alloy, process for producing r-t-b-base alloy, fines for r-t-b-base rare earth permanent magnet, r-t-b-base rare earth permanent magnet, and process for producing r-t-b-base rare earth permanent magnet |
| 10/14/2009 | EP2108710A1 Austenite based stainless steel and method of dehydrogenating the same |
| 10/14/2009 | CN101555573A Alloy steel and heat treatment method thereof |
| 10/14/2009 | CN101555567A Low alloyed steel and heat treatment process thereof |
| 10/14/2009 | CN100550219C R-T-B sintered magnet and process for producing the same |
| 10/14/2009 | CN100549204C Martensitic stainless steel |
| 10/14/2009 | CN100549189C Surface modified precipitation hardened stainless steel |
| 10/13/2009 | CA2462963C Duplex stainless steels |
| 10/08/2009 | WO2009123100A1 Thin strip of amorphous alloy, nanocrystal soft magnetic alloy, and magnetic core |
| 10/08/2009 | DE112007003026T5 Verfahren zur Herstellung eines Glas-Formwerkzeugs A process for producing a glass-forming die |
| 10/07/2009 | CN201321475Y Workpiece liquid nitrogen smoked set cooling device |
| 10/01/2009 | US20090242084 Method for Producing a Shaft for Compressors |
| 10/01/2009 | US20090242083 Iron-based alloy having shape memory properties and superelasticity and its production method |
| 09/24/2009 | WO2009116933A1 Steel, process for the manufacture of a steel blank and process for the manufacture of a component of the steel |
| 09/24/2009 | US20090236016 Method for manufacturing glass molding die |
| 09/24/2009 | CA2716983A1 Steel, process for the manufacture of a steel blank and process for the manufacture of a component of the steel |
| 09/23/2009 | CN101538682A Method for manufacturing martensitic stainless steel |
| 09/23/2009 | CN101537428A Semi-steel roll and preparation method thereof |
| 09/22/2009 | US7591917 Method of producing steel strip |
| 09/16/2009 | EP2100983A1 Ferritic stainless steel sheet for water heater excellent in corrosion resistance at welded part and steel sheet toughness |
| 09/16/2009 | EP2100977A1 Method of increasing resistance to stress corrosion cracking of austenitic stainless steels |
| 09/16/2009 | CN101532963A Method for observing transformation surface relief of eutectoid steel pearlite by confocal laser microscope |
| 09/16/2009 | CN101532114A Fe-Cr-Mo-based anticorrosive high-damping alloy |
| 09/10/2009 | US20090223610 High carbon steel wire material having excellent wire drawability and manufacturing process thereof |
| 09/08/2009 | US7585378 Alloy containing rare earth element, transition metal and another elementr |
| 09/03/2009 | WO2009107475A1 Austenitic stainless steel and process for hydrogen removal thereof |
| 09/03/2009 | CA2715814A1 Austenitic stainless steel, and method for removing hydrogen therefrom |
| 09/02/2009 | EP2096186A1 Free-cutting steel excellent in manufacturability |
| 09/02/2009 | CN100535163C Ferrous abrasion resistant sliding materials and sliding members |
| 09/01/2009 | CA2335911C Case hardened steel with high tempering temperature, method for obtaining same and parts formed with said steel |
| 08/27/2009 | US20090211670 Cooling apparatus for a hot rolled steel strip and methods for cooling a hot rolled steel strip |
| 08/26/2009 | EP2093304A1 Armour for a vehicle |
| 08/26/2009 | CN101517114A Hot-working tool steel having excellent stiffness and high-temperature strength and method for production thereof |
| 08/26/2009 | CN101517098A Frictionally press-bonded member |
| 08/20/2009 | WO2009102848A1 Methods of thermo-mechanically processing tool steel and tools made from thermo-mechanically processed tool steels |
| 08/19/2009 | EP2090671A1 High-strength wire rod excelling in wire drawability and process for producing the same |
| 08/19/2009 | EP2090383A1 Methods of thermo-mechanically processing tool steel and tools made from thermo-mechanically processed tools steels |
| 08/19/2009 | CN201292392Y Solid solution machine with stainless steel U shaped recuperator tube |
| 08/19/2009 | CN101512022A Method for preparing steel with low-temperature flexibility |
| 08/19/2009 | CN101509057A Full-technique non-oriented electrical steel continuous annealing test method |
| 08/19/2009 | CN101509056A Thermal treatment method for precipitation hardening of martensitic stainless steel FV520B |
| 08/19/2009 | CN100529137C Component for machine structure, method for producing same, and material for high-frequency hardening |
| 08/18/2009 | US7575646 Containing carbide particles |
| 08/18/2009 | CA2376529C Powder metallurgy manufactured high speed steel |
| 08/15/2009 | CA2654368A1 Methods of thermo-mechanically processing tool steel and tools made from thermo-mechanically processed tool steels |
| 08/13/2009 | US20090199934 Treating al/zn-based alloy coated products |
| 08/13/2009 | US20090199930 Secondary-hardening gear steel |
| 08/12/2009 | EP2088218A1 High young's modulus steel plate and process for production thereof |
| 08/06/2009 | WO2009096382A1 Amorphous soft magnetic alloy, amorphous soft magnetic alloy ribbon, amorphous soft magnetic alloy powder, and magnetic core and magnetic component using the same |
| 08/06/2009 | WO2009095940A1 Method of processing of pieces or parts of machines, in particular of pieces or parts of leather- splitting machines, and pieces or parts of machines obtained with such a method |
| 08/06/2009 | US20090194175 Shut-off device and process for producing a shut-off device |
| 08/05/2009 | EP2085493A1 Process for producing high-concentration carburized steel |
| 08/05/2009 | EP1836327A4 High-strength four-phase steel alloys |
| 08/05/2009 | CN101501915A Coil spring for fuel cell |
| 08/05/2009 | CN101501914A Stainless steel member for fuel cell |
| 07/29/2009 | EP1218552B1 Low-carbon steels of superior mechanical and corrosion properties |
| 07/29/2009 | CN101492763A Ultra-high pressure composite reinforcement process for rear cutting sleeve of stainless steel double caliper sleeve type tube union |
| 07/23/2009 | WO2009055133A3 Secondary-hardening gear steel |
| 07/23/2009 | US20090183804 Localized induction heating for residual stress optimization |
| 07/16/2009 | US20090178739 Iron-based alloy and process for producing the same |
| 07/14/2009 | CA2457183C Alloy and object having high heat resistance and high thermal stability |
| 07/09/2009 | WO2009086382A1 Cryogenic treatment process for diamond abrasive tools |
| 06/30/2009 | CA2377782C Low-carbon steels of superior mechanical and corrosion properties |
| 06/24/2009 | CN201261796Y Conveyer belt type cryogenic treatment apparatus |
| 06/24/2009 | CN201261795Y Well type cryogenic treatment apparatus |