Patents for C21D 8 - Modifying the physical properties by deformation combined with, or followed by, heat treatment (18,654)
05/2012
05/23/2012CN101705429B Production method of wire rod of high-speed railroad no-slag sleeper slab steel wire
05/23/2012CN101688276B Thick hot-rolled steel sheet excellent in workability and excellent in strength and toughness after heat-treatment, and method for producing the same
05/23/2012CN101429620B Phosphor intensified twin crystal inducement plastic steel material and its production technique
05/22/2012US8182621 Method of hot-rolled thin steel sheet with excellent formability and excellent strength and toughness after heat treatment
05/22/2012CA2600701C Alloyed hot-dip galvanized steel sheet and method for producing same
05/18/2012WO2012064129A2 Method for manufacturing high-strength cold-rolled/hot-rolled trip steel having a tensile strength of 590 mpa grade, superior workability, and low mechanical-property deviation
05/18/2012WO2012064104A1 Wire rod and steel wire having superior magnetic characteristics, and method for manufacturing same
05/18/2012WO2011139117A3 High-strength and high-toughness ultrafine wire rod and method for producing same
05/16/2012EP2453033A1 Steel wire for high-strength spring
05/16/2012EP2050832B1 Two-phase stainless steel
05/16/2012EP2028284B1 High-strength seamless steel pipe for mechanical structure which has excellent toughness and weldability, and method for manufacture thereof
05/16/2012EP2025767B1 Process for producing grain-oriented electrical steel sheet with high magnetic flux density
05/16/2012CN102459696A Electromagnetic steel sheet having insulating coating film and process for production thereof
05/16/2012CN102459656A Process for producing thick high-strength steel plate with excellent toughness of heat-affected zone in high heat input welding and thick high-strength steel plate with excellent toughness of heat-affected zone in high heat input welding
05/16/2012CN102453841A Steel used for sea oil extraction platform R4S grade mooring chain and its manufacture method
05/16/2012CN102453838A High-strength non-oriented electrical steel with high magnetic induction and manufacturing method thereof
05/16/2012CN102453796A Automobile column and method for producing a hot-formed and press-hardened automobile column
05/16/2012CN102453793A Annealing isolation agent used for preparing mirror surface-oriented silicon steel with excellent magnetic property
05/16/2012CN102453791A Automobile column and method for producing a hot-formed and press-hardened automobile column
05/16/2012CN102452425A Automobile column and method for producing a hot-formed and press-hardened automobile column
05/16/2012CN101688264B Process for producing a locally hardened profile component, locally hardened profile component and use of a locally hardened profile component
05/15/2012US8177929 Method of making an embossed metal gasket
05/15/2012US8177925 High-tensile steel plate, welded steel pipe or tube, and methods of manufacturing thereof
05/15/2012US8177920 Grain-oriented electrical steel sheet and process for producing the same
05/15/2012CA2540000C Low carbon alloy steel tube having ultra high strength and excellent toughness at low temperature and method of manufacturing the same
05/15/2012CA2526488C A cold-rolled steel sheet having a tensile strength of 780 mpa or more an excellent local formability and a suppressed increase in weld hardness
05/10/2012WO2012060496A1 Method for manufacturing automobile part having different local strengths using heat-treatment hardening steel plate
05/10/2012WO2012060405A1 High-strength steel sheet and method for producing same
05/10/2012US20120111455 Manufacturing method of grain-oriented magnetic steel sheet
05/10/2012DE102010050844A1 Laser treatment of a workpiece by a laser beam, by lowering contours with laser beam, generating two crack columns on the surface of the workpiece, and forming the grain-oriented portions with a grain orientation
05/10/2012DE102010049640B4 Werkzeug zum partiellen Wärmebehandeln eines metallischen Bauteils und Verfahren zum partiellen Wärmebehandeln eines metallischen Bauteils Tool for partial annealing of a metallic component and method for partial annealing of a metallic component
05/09/2012EP2334456B1 Free-machining powder metallurgy lead-free steel articles and method of making same
05/09/2012CN102443893A Technology for preparing ring traveler with self-lubricating function
05/09/2012CN102443740A Alloy steel nitride and manufacture method thereof
05/09/2012CN102443734A Non-oriented electrical steel plate without corrugated defect and its manufacturing method
05/09/2012CN102443687A Microstructure component controlling method for raising yield ratio of fine grain reinforced bar
05/09/2012CN102031356B Preparation method of titanium steel composite board reducing end part downwards-buckling during rolling
05/09/2012CN101688282B Bend pipe and process for manufacturing the same
05/09/2012CN101338398B High strength non-quenched and tempered free machining steel for automobile connecting bar and technological process thereof
05/08/2012US8172962 Fixed constant velocity universal joint and method for manufacturing outer race thereof
05/08/2012US8172959 Austenitic stainless steel, manufacturing method for the same, and structure using the same
05/03/2012WO2012057070A1 High carbon steel wire rod having excellent wire drawability
05/03/2012WO2012055224A1 Manufacture method of high efficiency non-oriented silicon steel having good magnetic performance
05/03/2012WO2012055223A1 High strength non-oriented electric steel having higher magnetic flux density and manufacture method thereof
05/03/2012WO2012055215A1 Method for manufacturing non-oriented silicon steel with high-magnetic induction
05/03/2012US20120107633 High strength steel sheet and method for manufacturing the same
05/03/2012US20120107632 Method for producing a component from an air-hardenable steel and component produced therewith
05/03/2012US20120106693 HIGH Cr FERRITIC/MARTENSITIC STEELS HAVING AN IMPROVED CREEP RESISTANCE FOR IN-CORE COMPONENT MATERIALS IN NUCLEAR REACTOR, AND PREPARATION METHOD THEREOF
05/03/2012US20120103474 Manufacturing method of grain-oriented electrical steel sheet
05/03/2012DE102010056265B3 Preparing cured steel components with coating of zinc or zinc alloy, by coating curable steel material with layer of zinc or zinc alloy, punching plates of curable steel material, and converting zinc coating on steel to zinc-iron coating
05/03/2012DE102010049640A1 Werkzeug zum partiellen Wärmebehandeln eines metallischen Bauteils und Verfahren zum partiellen Wärmebehandeln eines metallischen Bauteils Tool for partial annealing of a metallic component and method for partial annealing of a metallic component
05/03/2012CA2812469A1 High carbon steel wire rod having excellent drawability
05/02/2012EP2447389A1 High-strength zn-al-plated steel wire for bridges which has excellent corrosion resistance and fatigue properties, and process for production thereof
05/02/2012EP2447383A1 Pearlite based high-carbon steel rail having excellent ductility and process for production thereof
05/02/2012EP2447382A1 High-strength ultra-fine steel wire and manufacturing method therefor
05/02/2012EP2137327B1 Steel for tool-less hot forming or quenching with improved ductility
05/02/2012EP1613449B1 Method for producing helical springs or stabilisers
05/02/2012EP1491646B1 Ferritic stainless steel sheet, and method for producing the same
05/02/2012CN102439188A High manganese nitrogen-containing steel sheet having high strength and high ductility, and method for manufacturing same
05/02/2012CN102439186A High strength, high toughness steel wire rod, and method for manufacturing same
05/02/2012CN102439185A Aluminum strip rich in manganese and very rich in magnesium
05/02/2012CN102439179A Method for manufacturing hot rolled steel strip product, and hot rolled steel strip product
05/02/2012CN102434725A Method for manufacturing stainless steel seamless steel pipe with large caliber
05/02/2012CN102433515A MC5 Steel and large-sized flattening roll prepared by using the same, and manufacturing process of MC5 steel
05/02/2012CN102433509A 780MPa-grade cold-rolled hot-dip galvanized dual-phase steel and preparation method thereof
05/02/2012CN102433499A S275NL high strength and toughness ultrafine grain structural steel medium plate and its production method
05/02/2012CN102433498A Q550 D high-quality structural iron medium and heavy plate and production method thereof
05/02/2012CN102433496A Method for producing Q460 steel plate with single stand rolling mill
05/02/2012CN102433495A Rare-earth treated anticorrosive steel plate for wind power
05/02/2012CN102433479A Magnesium alloy with warm extrusion property and preparation method of magnesium alloy extrusion material
05/02/2012CN102430695A Manufacture method of highly-novel round-link chain
05/02/2012CN101568661B Martensitic non-heat-treated steel for hot forging and non-heat-treated steel hot forgings
05/02/2012CN101538677B HRB500E fine grain anti-seismic steel bar and production method thereof
05/01/2012US8168011 High-strength steel wire excellent in ductility and method of manufacturing the same
04/2012
04/26/2012WO2012053541A1 Steel for cold forging/nitriding, steel material for cold forging/nitriding, and cold-forged/nitrided component
04/26/2012WO2012052689A1 Hot-rolled or cold-rolled steel plate, method for manufacturing same, and use thereof in the automotive industry
04/26/2012WO2012052626A1 Hot-rolled or cold-rolled steel plate, method for manufacturing same, and use thereof in the automotive industry
04/26/2012US20120097298 Method for producing partially hardened steel components
04/26/2012CA2815018A1 Hot-rolled or cold-rolled steel plate, method for manufacturing same, and use thereof in the automotive industry
04/25/2012EP2444523A1 Electromagnetic steel sheet having insulating coating film and process for production thereof
04/25/2012EP2444510A1 High-strength hot-dip galvannealed steel shhet with excellent workability and fatigue characteristics and process for production thereof
04/25/2012EP2443263A1 A method of shaping and hardening a sheet steel blank
04/25/2012EP2291547B1 Method for manufacturing very high strength, cold-rolled, dual phase steel sheets, and sheets thus produced
04/25/2012EP1546417B1 High strength seamless steel pipe excellent in hydrogen-induced cracking resistance and its production method
04/25/2012CN102428201A Stainless Steel For Oil Well, Stainless Steel Pipe For Oil Well, And Process For Production Of Stainless Steel For Oil Well
04/25/2012CN102428199A 高强度弹簧用中空无缝管 High-strength spring hollow seamless
04/25/2012CN102424940A 高纯钴靶材的制备方法 Preparation of high purity cobalt targets
04/25/2012CN102424934A 18CrNiMo7-6大型齿轮钢锻件制造方法 18CrNiMo7-6 large gear steel forgings manufacturing method
04/25/2012CN102424933A 一种热轧高强带钢及其制造方法 A hot rolled high-strength steel and its manufacturing method
04/25/2012CN102424932A Production method of hot-rolled 500N Australian standard steel bar
04/25/2012CN102424931A 精密机床滑块用非调质合金结构钢、制造方法和应用 Precision Machine Tool slider non-quenched and tempered alloy steel, manufacturing methods and applications
04/25/2012CN102424906A Method for optimizing weld seam structure and properties of HFW(High Frequency Welded) pipes
04/25/2012CN102424905A 铝合金板材的生产方法和系统 Production methods and systems for aluminum alloy sheet
04/25/2012CN102424904A 采用20CrMo渗碳钢制作摩托车齿轮的方法 Adopt 20CrMo steel production motorcycle gear carburizing methods
04/25/2012CN102424903A 一种提高高铬高镍型双相耐热钢热加工塑性的方法 Method for improving high-chromium steels, high nickel duplex resistant plastic thermal processing method
04/25/2012CN101914727B 一种具有良好低温韧性的机车车头用钢板及其生产方法 A motorcycle having a front with a good low temperature toughness of the steel sheet and production method thereof
04/25/2012CN101899619B 高应变硬化指数的热镀锌高强钢及其生产方法 HDG high strain hardening exponent of high-strength steel and its production method
04/25/2012CN101845602B 一种高性能耐候建筑结构用钢及其制造方法 A high performance weathering steel building structure and its manufacturing method
04/25/2012CN101724777B 抗拉强度为550MPa级热轧轮辋钢板及其制造方法 Tensile strength of 550MPa grade hot-rolled steel sheet and method of manufacturing the rim
04/25/2012CN101691629B 无缝钢管的制造方法 Seamless steel pipe manufacturing method
1 ... 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 ... 187