Patents for C21D 8 - Modifying the physical properties by deformation combined with, or followed by, heat treatment (18,654)
12/2003
12/03/2003EP1367143A1 Hot dip zinc plated steel sheet having high strength and method for producing the same
12/03/2003EP1367140A1 Grain-oriented electrical steel sheet excellent in magnetic properties and method for producing the same
12/03/2003CN1129677C Non oriented electromagnetic steel sheet having reduced magnetic anisotropy in high frequency region and excellent press workability
12/03/2003CN1129675C Color CRT mask frame, steel plate for use therein process for producing steel plate and color CRT havnig frame
12/02/2003US6656419 Nickel 30-85 wt %, carbon < 0.015 wt %, Silicon < 1.0 wt %, Manganese < 1.0 wt %, phosphorus < 0.01 wt %, sulfur < 0.005 wt %, oxygen < 0.0060 wt %, aluminum < 0.02 wt % remainder iron; casting, homogenizing heat treatment and hot rolling
12/02/2003US6656418 Steel composition, method for making same and parts produced from said compositions, particularly valves
11/2003
11/27/2003WO2003097884A1 Non-grain oriented electrical steel strip or electrical steel sheet and method for producing the same
11/27/2003WO2003069010A8 Steel sheet for container excellent in formability and properties at weld, and method for producing the same
11/27/2003WO2003029504A3 High-strength duplex/triplex steel for lightweight construction and use thereof
11/27/2003US20030217795 High-strength steel sheet and high-strength steel pipe excellent in deformability and method for producing the same
11/27/2003US20030217789 High temperature; toughness
11/27/2003DE10220282C1 Verfahren zum Herstellen von kaltgewalztem Stahlband mit Si-Gehalten von mindestens 3,2 Gew.-% für elektromagnetische Anwendungen A method of producing cold rolled steel strip having Si contents of at least 3.2 wt .-% for electromagnetic applications
11/26/2003EP1365037A1 High strength steel sheet having excellent formability and method for production thereof
11/26/2003CN1458984A Grain-oriented magnetic steel sheet having no under coat fim comprising forsterite as primary component and having good magnetic characteristics and its producing method
11/26/2003CN1458983A Piston ring excellent in resistance to scuffing, cracking and fatigue and method for producing same, and combination of piston ring and cylinder block
11/26/2003CN1458870A Method of producing steel strips
11/26/2003CN1458867A Hot rooling mill and method
11/26/2003CN1128889C Method for making carbon steel bands, in particular packaging steel bands, and resulting bands
11/26/2003CN1128888C Ultra-high strength ausaged steels with excellent cryogenic temp. toughness
11/25/2003US6652671 Excellent in hardenability and toughness and formable with a high dimensional precision; tools, springs
11/25/2003US6652670 Steel sheet and method for manufacturing the same
11/20/2003WO2003095684A1 Method of continuous casting non-oriented electrical steel strip
11/20/2003WO2003095683A1 Cold-rolled steel strip having a silicon content of at least 3.2 wt. % and used for electromagnetic purposes
11/20/2003US20030213535 Methods of manufacturing cold-rolled and hot-dip galvanized steel sheet excellent in strain age hardening property
11/19/2003EP1362930A1 Thin steel sheet for automobile excellent in notch fatigue strength and method for production thereof
11/19/2003CN1457371A Hot dip zinc plated steel sheet having high strength and method for producing the same
11/19/2003CN1128243C Cold rolled steel plate with excellent machining homogenity and its production process
11/19/2003CN1128242C Process for preparing high-cleanness, high-strength and high toughness steel for gas delivering pipeline
11/19/2003CN1128241C Technology for manufacturing hot-dip galvanized cold-rolled steel plate with excellent maching uniformity
11/19/2003CN1128240C Stretching steel wire bar with good twisting property and its manufacturing mehtod
11/19/2003CN1128239C Manufacture of electric steel plate with high magnetic flux density orientation
11/18/2003US6648991 Desulfurization and austenized steel for particularly in environments containing carbon dioxide
11/18/2003US6648209 Process for producing welded steel pipes with a high degree of strength, ductility and deformability
11/13/2003US20030209287 Multilayer; iron core overcoated with iron oxide dielectric
11/12/2003EP1361290A1 Steel for chemical tank, excellent in sulfuric acid corrosion resistance and pitting corrosion resistance
11/12/2003EP1361003A2 Method for manufacuturing seamless steel tube
11/12/2003EP1360338A2 Manufacturing process for making engine components of high carbon content steel using cold forming techniques
11/12/2003EP1360017A1 Method and device for manufacturing a hot rolled steel strip
11/12/2003EP1037721B1 Process and device for producing a ferritically rolled steel strip
11/12/2003CN1127383C Seamless steel pipe manufacturing method and equipment
11/11/2003US6645324 Excellent ridging resistance and formability
11/11/2003US6645319 Wire rod for drawing superior in twisting characteristics and method for production thereof
11/11/2003US6645318 Fuel tank made of ferritic stainless steel
11/11/2003US6645317 Metal components for picture tubes
11/06/2003US20030205355 Method of producing steel strip
11/06/2003US20030205302 Rough-rolling a steel consisting of 0.04-0.2% C, 0.25-2% Si, 0.5-2.5% Mn, and 0.1% or less Al followed by finish-rolling at 1050 degrees C. or less
11/06/2003US20030205296 Fe-Ni based permalloy and method of producing the same and cast slab
11/05/2003EP1359230A1 Production method for steel plate and equipment therefor
11/05/2003EP1358359A2 Steel and method for producing an intermediate product
11/04/2003US6641931 Method of production of cold-rolled metal coated steel products, and the products obtained, having a low yield ratio
11/04/2003US6641682 Method for manufacturing an aperture grill material for color picture tube
10/2003
10/30/2003WO2002050322A3 A steel plate and a hot dip galvanizing steel plate having superior electric and magnetic shielding property
10/30/2003US20030201254 Method of manufacturing a welding stud
10/30/2003US20030201039 Tensile strength; high strength; ductility
10/30/2003US20030201038 Methods of manufacturing hot-dip galvanized hot-rolled and cold-rolled steel sheets excellent in strain age hardening property
10/29/2003EP1357199A1 Precipitation-hardened soft magnetic ferritic stainless steel
10/29/2003EP1357198A1 Austenitic stainless alloy excellent in high temperature strength and corrosion resistance, heat resistant pressurized parts, and the manufacturing method thereof
10/29/2003EP1356127A2 Process for the production of grain oriented electrical steel strips
10/29/2003EP1356126A2 Process for the production of grain oriented electrical steel strips
10/29/2003EP1355866A1 Powers which have an antibacterial and a far infrared ray radiating property and a bio-wave steel plate which is coated with resin containing the same
10/29/2003EP1355747A1 Method for altering the profile of a roller strip
10/29/2003EP1172451B1 Material for shadow mask, method for production thereof, shadow mask and image receiving tube
10/29/2003CN1451778A Excellent high-temp. strength and corrosion resistance austenite stainless steel, heat- and pressure-resistant component thereof and method for mfg. same
10/29/2003CN1451770A Nanoparticle toughened low carbon steel producing method
10/29/2003CN1125882C Ultra high strength triple phase steels with excellent cryogenic temp toughness
10/28/2003US6638633 Layers of insulator coatings comprising water soluble resins and colloids selected from silica, alumina and/or alumina-silica
10/28/2003US6638380 Method for making a cold rolled steel strip for deep-drawing
10/28/2003US6638371 Cold-rolled steel sheet having ultrafine grain structure and method for manufacturing the same
10/28/2003US6638368 Non-oriented electrical steel sheet and method for producing the same
10/23/2003WO2003087420A1 Directional hot rolled magnetic steel sheet or strip with extremely high adherence to coating and process for producing the same
10/23/2003WO2003087419A1 Deformed wire for reinforcing marine optical fiber cable
10/23/2003US20030199236 Method of manufacturing an endodontic instrument
10/23/2003US20030198567 Aging resistance; controlling grain particle sizes; pressurized parts
10/23/2003US20030196776 Method for controlling a continuous strip steel casting process based on customer-specified requirements
10/23/2003US20030196735 Steel plate excellent in shape freezing property and method for production thereof
10/23/2003US20030196734 Method for manufacturing seamless steel tube
10/23/2003US20030196731 Method for manufacturing a steel sheet
10/22/2003EP1354973A1 High-strength steel sheet and high-strength pipe excellent in deformability and method for producing the same
10/22/2003EP1354972A1 Cold-rolled steel sheet having ultrafine grain structure and method for manufacturing the same
10/22/2003EP1354566A2 Method of manufacturing an endodontic instrument
10/22/2003EP1354070A2 High-strength isotropic steel, method for making steel plates and resulting plates
10/22/2003EP1149928B1 Hot dip galvanized steel plate excellent in balance of strength and ductility and in adhesiveness between steel and plating layer
10/22/2003CN1450282A Method for mfg of roller of roller bearing
10/22/2003CN1450191A High-tensile strength hot-rolled steel sheet excellent in elongation properties and stretch flangeability and producing method thereof
10/22/2003CN1450180A Method for improving cold-forming property of hot rolled steel plate
10/21/2003US6635361 Magnetic shielding steel sheet and method for producing the same
10/21/2003US6635128 Work hardened poppet exhaust valve
10/21/2003US6635127 Cold rolling; tensile strength, ductility, hardening
10/21/2003US6635125 Grain-oriented electrical steel sheet excellent in film characteristics and magnetic characteristics, process for producing same, and decarburization annealing facility used in same process
10/21/2003US6634073 A train of in-line continuous manufacturing equipment for producing steel wire, considered difficult with a block mill up to now, capable of efficiently carrying out controlled-rolling and slow-cooling by an effective in-line
10/21/2003CA2216659C Semiprocessed nonoriented magnetic steel sheet having excellent magnetic characteristics and method for making the same
10/16/2003WO2003085149A1 Pealite based rail excellent in wear resistance and ductility and method for production thereof
10/16/2003US20030192626 Precipitation-hardened soft magnetic ferritic stainless steels
10/16/2003US20030192625 High carbon steel railroad rails; resistant to rolling fatigue damage; alloy comprises carbon, silicon, manganese, chromium, copper, nickel, molybdenum, sulfur, aluminum, and iron; ultrafine pearlite; hardness
10/16/2003DE10201009C1 Verfahren zur Herstellung eines Produkts aus Stahl und danach hergestelltes Produkt A method for producing a product made of steel and subsequently manufactured product
10/16/2003CA2749503A1 Pearlitic steel rail excellent in wear resistance and ductility and method for producing the same
10/16/2003CA2451147A1 Pearlitic steel rail excellent in wear resistance and ductility and method for producing the same
10/15/2003EP1352982A2 Stainless steel, method for manufacturing of stress cracking free workpieces and product made thereof
10/15/2003CN1448528A Cold-rolled steel plate having superfine grained structure and manufacturing method thereof
10/15/2003CN1124361C Ferritic stainless steel plate