| Patents for C21D 3 - Diffusion processes for extraction of non-metals; Furnaces therefor (566) |
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| 07/06/2011 | CN101128273B High-strength welded steel pipe excellent in hydrogen embrittlement cracking resistance of weld metal and process for producing the same |
| 06/29/2011 | CN101713052B Non-quenching high-toughness cold-working die steel and production process |
| 06/22/2011 | DE10320036B4 Verfahren zur Bestimmung des Diffusionskoeffizienten von Kohlenstoff in Stählen A method for determining the diffusion coefficient of carbon in steels |
| 05/11/2011 | EP1411139B1 Ultra-high magnetic flux density unidirectional electrical sheet excellent in high magnetic field iron loss and coating characteristics and production method therefor |
| 04/27/2011 | CN101514387B Alloy solid-phase decarburization method |
| 04/21/2011 | WO2011045515A1 Heat treatment of martensitic stainless steel after remelting under a layer of slag |
| 04/21/2011 | CA2776851A1 Heat treatment of martensitic stainless steel after remelting under a layer of slag |
| 04/20/2011 | CN102021282A Annealing separant for preparing grain-oriented silicon steel and using method thereof |
| 03/30/2011 | CN101389778B Wire with excellent suitability for drawing and process for producing the same |
| 02/09/2011 | CN101967541A Heating method for controlling decarburization in heavy rail billet furnace |
| 01/26/2011 | CN101960024A Austenitic stainless steel and process for hydrogen removal thereof |
| 01/26/2011 | CN101384742B High-strength steel excellent in weldability and process for production thereof |
| 01/12/2011 | EP2272995A1 A manufacturing method of oriented si steel with high electric-magnetic property |
| 12/08/2010 | CN101648254B Process for forging hydrogenated titanium alloy forging blade |
| 11/17/2010 | CN101418367B Carbon elimination process for non-oriented silicon steel production |
| 11/10/2010 | EP2248918A1 Austenitic stainless steel and process for hydrogen removal thereof |
| 10/13/2010 | CN101333619B Technological process for controlling secondary recrystallization crystal particle dimension of oriented silicon steel |
| 09/16/2010 | US20100230982 Vehicle structures |
| 08/11/2010 | CN101802232A Method for producing a surface-decarbonized hot-rolled strip |
| 06/02/2010 | CN101717846A Personnel air lock automatic control system |
| 05/26/2010 | CN101713054A Large thickness steel plate for hydrogenation reaction chamber reeling equipment and production method thereof |
| 05/26/2010 | CN101713052A Non-quenching high-toughness cold-working die steel and production process |
| 05/12/2010 | CN101705426A Drill collar steel and dehydrogenated heat treatment process thereof for improving ultrasonic flaw detection qualification rate |
| 05/05/2010 | CN101702311A Steel wire and manufacturing method therefor |
| 04/28/2010 | EP2179066A1 Method for producing a surface-decarbonized hot-rolled strip |
| 04/20/2010 | US7700186 Cemented carbide body |
| 04/07/2010 | CN101692382A Hydrogen removing method for radiator for transformer |
| 03/24/2010 | CN101680045A Method for reducing formation of electrically resistive layer on ferritic stainless steels |
| 02/10/2010 | CN100588723C Steel belt lead-bath quenching and backfire product line decarburization technique and device thereof |
| 12/31/2009 | US20090320962 Carburizing apparatus and carburizing method |
| 12/16/2009 | CN100569406C Steel wire for high-tension bolts and method for manufacturing high-tension bolts |
| 12/09/2009 | CN101600814A Processing method for cracking desensitisation using a nickel based alloy environment, mainly for a nuclear reactor fuel assembly and for a nuclear reactor, and part made of the alloy thus processed |
| 12/02/2009 | EP2126152A2 Processing method for cracking desensitisation using a nickel based alloy environment, mainly for a nuclear reactor fuel assembly and for a nuclear reactor, and part made of the alloy thus processed |
| 10/21/2009 | CN101559549A Process method for rewelding of high strength steel |
| 10/14/2009 | EP2108710A1 Austenite based stainless steel and method of dehydrogenating the same |
| 10/13/2009 | CA2412520C Method of production of surface densified powder metal components |
| 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 |
| 08/26/2009 | CN101514430A Chromium-molybdenum-vanadium steel and repairing technology for chromium-molybdenum-vanadium steel casting |
| 08/26/2009 | CN101514387A Alloy solid-phase decarburization method |
| 06/10/2009 | DE102007059218A1 Method for guiding the temperature in a diffusion oven comprises using an average temperature rise which is larger than a first average rise of a first linear or non-linear temperature-time function progression |
| 05/27/2009 | CN101443469A Austenitic stainless steel and process for removing hydrogentherefrom |
| 05/21/2009 | US20090126832 Method of production of grain-oriented electrical steel sheet having a high magnetic flux density |
| 05/20/2009 | CN101435011A Electrode salt bath furnace |
| 04/29/2009 | CN101418367A Carbon elimination process for non-oriented silicon steel production |
| 04/22/2009 | EP2002903A9 Method for production of seamless pipe, and oxidizing gas supply apparatus |
| 04/15/2009 | EP0926250B1 Grain-oriented electromagnetic steel sheet having excellent film characteristics and magnetic characteristics, its production method and decarburization annealing setup therefor |
| 03/18/2009 | CN101389778A Wire with excellent suitability for drawing and process for producing the same |
| 03/11/2009 | CN101384742A High-strength steel excellent in weldability and process for production thereof |
| 02/26/2009 | WO2009024472A1 Method for producing a surface-decarbonized hot-rolled strip |
| 02/18/2009 | EP2025421A1 Process for producing seamless stainless-steel pipe |
| 12/31/2008 | CN101333619A Technological process for controlling secondary recrystallization crystal particle dimension of oriented silicon steel |
| 12/30/2008 | CA2318112C Steel powder for the preparation of sintered products |
| 11/13/2008 | WO2008109652A3 Method for reducing formation of electrically resistive layer on ferritic stainless steels |
| 11/12/2008 | EP1990436A1 Wire with excellent suitability for drawing and process for producing the same |
| 11/06/2008 | US20080271819 Electrical steel; controlling concentration of bismuth; annealing, cold rolling, hot rolling, heating, decarboxylation; process control |
| 11/04/2008 | US7445678 Maraging steel and method of producing the same |
| 10/23/2008 | US20080257008 High Strength Welded Steel Tube Superior in Hydrogen Embrittlement Cracking Resistance of Weld Metal and Method of Production of Same |
| 10/15/2008 | CN201132843Y Nitrogen-hydrogen mixing humidifying groove |
| 09/23/2008 | CA2261235C Process for the preparation of an iron-based powder |
| 09/12/2008 | CA2677807A1 Method for reducing formation of electrically resistive layer on ferritic stainless steels |
| 08/27/2008 | CN100413980C Method for producing unidirectional silicons steel sheet free of inorganic mineral coating film |
| 08/26/2008 | CA2318214C Process of preparing an iron-based powder in a gas-tight furnace |
| 08/21/2008 | WO2008081118A3 Processing method for cracking desensitisation using a nickel based alloy environment, mainly for a nuclear reactor fuel assembly and for a nuclear reactor, and part made of the alloy thus processed |
| 08/14/2008 | DE102007039013B3 Production process for surface-decarbonized hot-rolled strip involves making strip, heating to decarbonizing heat, retaining in carbon-free atmosphere and cooling |
| 08/13/2008 | CN201099692Y Slow cooling pit |
| 08/07/2008 | WO2008093453A1 Austenite based stainless steel and method of dehydrogenating the same |
| 08/07/2008 | US20080187778 Tungstn and cobalt carbide; controlling particle size; toughness; wear resistance; cutting edge |
| 08/07/2008 | CA2649355A1 Austenitic stainless steel and process for removing hydrogen therefrom |
| 07/15/2008 | US7399369 Grain-oriented containing 2-7% Si in mass; Bi exists at the interface between the substrate steel and the primary film; produced by controlling the heating rate and the atmosphere of decarburization annealing |
| 06/10/2008 | US7384689 Cemented carbide body |
| 06/05/2008 | CA2613079A1 Method for producing porous surfaces on metal components |
| 06/04/2008 | CN100391659C Method of production of surface densified powder metal components |
| 03/12/2008 | CN101138819A High-hardness high carbon alloy hammered steel roll set composite manufacturing technology |
| 02/28/2008 | WO2007108344A9 High-strength steel excellent in weldability and process for production thereof |
| 02/27/2008 | CN101130840A Hydrogen permeating superplasticity processing method for in-situ synthesized titanium-based composite material |
| 02/20/2008 | CN201024187Y Annealing oven middle spacer segment atmosphere separation device |
| 02/20/2008 | CN101128273A High-strength welded steel pipe excellent in hydrogen embrittlement cracking resistance of weld metal and process for producing the same |
| 02/13/2008 | CN101121994A Cast steel for oil-well rig hoisting system and manufacturing method thereof |
| 12/06/2007 | WO2007138914A1 Process for producing seamless stainless-steel pipe |
| 11/14/2007 | EP1854562A1 High-strength welded steel pipe excellent in hydrogen embrittlement cracking resistance of weld metal and process for producing the same |
| 10/17/2007 | CN101054620A Steel belt lead-bath quenching and backfire product line decarburization technique and device thereof |
| 09/27/2007 | WO2007108344A1 High-strength steel excellent in weldability and process for production thereof |
| 09/07/2007 | WO2007099671A1 Wire with excellent suitability for drawing and process for producing the same |
| 09/07/2007 | CA2642935A1 Wire rods having excelling in wire drawability |
| 06/27/2007 | CN1986845A Heat treatment process for medium and small cold rolled silicon steel sheet |
| 06/13/2007 | CN1321215C Ultra-high magnetic fiux density unidirectional electrical steel sheet excellent in high magnetic field iron loss and coating characteristic and production method thereof |
| 06/06/2007 | CN1974101A Method of welding low alloy high strength steel |
| 01/30/2007 | US7169351 Method of production of surface densified powder metal components |
| 01/25/2007 | US20070020477 Cemented carbide body |
| 01/17/2007 | EP1342799B1 Method for baking steel parts |
| 12/19/2006 | US7150897 Method of making a cemented carbide tool and a cemented tool |
| 08/31/2006 | WO2006090889A1 High-strength welded steel pipe excellent in hydrogen embrittlement cracking resistance of weld metal and process for producing the same |
| 07/18/2006 | CA2204811C Method for repairing a nickel base superalloy article |
| 06/21/2006 | CN1788907A Welding method of middle, high-carbon steel with stainless steel |
| 06/13/2006 | CA2120438C Process for the production of grain oriented magnetic steel sheets having improved remagnetization losses |
| 03/08/2006 | CN1743128A Method for producing oriented silicon steel band by direct rolling of continuous cast plate slab |
| 03/08/2006 | CN1743127A Method for producing oriented silicon steel band by continuous casting and rolling of thin plate slab |
| 09/20/2005 | US6946041 Comprises hot/cold rolling steel sheet, pickling, then annealing |
| 08/31/2005 | EP1263993B1 Method for producing non grain-oriented electric sheets |