| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 12/17/2009 | US20090309275 Direct smelting plant |
| 12/17/2009 | CA2727224A1 High-strength steel sheet and method of producing molten steel for high-strength steel sheet |
| 12/16/2009 | EP2132345A1 Melt metallurgical method for the production of metal melts, and transition metal-containing charge for use therein |
| 12/16/2009 | CN201362730Y Refining furnace for producing high-carbon and high-chrome martensitic stainless steel material |
| 12/16/2009 | CN101603146A Automobile spoke steel and smelting process |
| 12/16/2009 | CN101603144A 700 MPa level high-strength cold rolling carbon-aluminum-manganese steel plate and manufacturing method thereof |
| 12/16/2009 | CN101603117A Slag modifier and preparation method and using method thereof |
| 12/16/2009 | CN101603116A Lance holder with multiple tolerance chuck head |
| 12/16/2009 | CN101603115A Process for applying hydrogen to deoxygenation of liquid steel |
| 12/16/2009 | CN101603114A Process for applying natural gas to deoxidation and recarburization in arc furnace |
| 12/16/2009 | CN100569962C Al-Ca matter converter slag deacidizing modifier |
| 12/15/2009 | CA2404633C Vacuum treatment of cast metal with simultaneous helium-injection stirring |
| 12/10/2009 | WO2009146573A1 A composite ball used to precisely control the quantity of the trace element dissolved in the molten steel and the method of producing the composite ball |
| 12/10/2009 | DE102008028011A1 Verfahren zur Erzeugung einer Schaumschlacke auf austenitischen Rostfreischmelzen in einem Elektrolichtbogenofen A method for generating a foamed slag on austenitic stainless steel melts in an electric arc furnace |
| 12/09/2009 | EP2129807A1 Method for the reduction of a slag having a high degree of chromium in an electric arc furnace |
| 12/09/2009 | CN201358274Y Automatic magnesia feeding device for ladle port of vacuum refining furnace |
| 12/09/2009 | CN201358273Y Multifunctional top gun sealing device |
| 12/09/2009 | CN201358272Y Air brick used for steel ladle bottom blowing |
| 12/09/2009 | CN201358271Y Intelligent gas flow control instrument |
| 12/09/2009 | CN201358270Y Comprehensive smoke-discharging dedusting system of LF fining furnace |
| 12/09/2009 | CN201358269Y LF refining furnace semi-closed hood smoke exhaust and dust removal system |
| 12/09/2009 | CN201358268Y Novel ladle fining furnace |
| 12/09/2009 | CN101598228A Flow regulating valve |
| 12/09/2009 | CN101597724A Alloy structural steel and production method thereof |
| 12/09/2009 | CN101597722A Multielement ferroboron resisting zinc liquid corrosion and preparation method thereof |
| 12/09/2009 | CN101597713A Micro alloying SWRH87B hot rolled wire rod and manufacturing method thereof |
| 12/09/2009 | CN101597669A Hot metal dephosphorization method by using top-bottom combined blown converter under the condition of slag splashing and converter protecting |
| 12/09/2009 | CN101597668A Processing method of hot metal dephosphorization by using top-bottom combined blown converter |
| 12/09/2009 | CN101597667A Steel shot aluminum product |
| 12/09/2009 | CN101597666A Method for improving molten steel cleanness of medium plate low carbon aluminum-killed steel |
| 12/09/2009 | CN101596589A Production method of steel shot aluminum |
| 12/09/2009 | CN101596588A Production equipment of steel shot aluminum |
| 12/09/2009 | CN101596573A Method for manufacturing transition section of conical head of coke tower |
| 12/09/2009 | CN101596553A High speed steel roll collar applied to high speed wire rolling mill and manufacture method thereof |
| 12/09/2009 | CN100567515C Vacuum refining system and method for molten steel |
| 12/09/2009 | CN100567514C Passive granule alloy and preparation method thereof |
| 12/09/2009 | CN100567513C Method for adding bearing steel nano titanium-removing agent in molten steel |
| 12/09/2009 | CN100567512C Nitrogen content control method for smelting stainless steel by vacuum oxygen decarburization device |
| 12/09/2009 | CN100567216C Desulfurization ladle brick |
| 12/09/2009 | CN100566922C Process for manufacturing corrosion resistant low-chromium tubing in CO2 and H2S coexisted environment |
| 12/09/2009 | CN100566873C Abrasion-proof cast iron roll collar for straightening steel rail and preparation method thereof |
| 12/03/2009 | WO2009145328A1 High-strength hot-rolled steel sheet for line pipe excellent in low-temperature toughness and ductile-fracture-stopping performance and process for producing the same |
| 12/03/2009 | WO2009145168A1 Manufacturing method for machine parts having superior rolling-contact fatigue life |
| 12/03/2009 | US20090293674 Wire for refining molten metal and associated method of manufacture |
| 12/02/2009 | EP1538224B1 Steel product reduced in amount of alumina cluster |
| 12/02/2009 | CN201354379Y Novel vacuum refining furnace |
| 12/02/2009 | CN201354378Y Pneumatic device of RH feeding system |
| 12/02/2009 | CN101594928A Electromagnetic stirrer |
| 12/02/2009 | CN101591752A Steel for cup-shaped iron core of loudspeaker and production method thereof |
| 12/02/2009 | CN101591722A Mechanical agitation type pretreatment device |
| 12/02/2009 | CN101591721A Agitation type desulfurization device |
| 12/02/2009 | CN101591720A Method for producing aluminum-manganese-iron alloy |
| 12/02/2009 | CN101591719A Method for smelting steel for large heat input welding pipeline |
| 12/02/2009 | CN101591188A Refractory material for circulation system of RH furnace and method for preparing same |
| 12/02/2009 | CN101591186A Peripheral castable material for dip pipe of RH furnace and method for preparing same |
| 12/02/2009 | CN100564565C Method for producing ultra-low carbon corrosion resisting alloy by using plasma refining |
| 12/02/2009 | CN100564548C High-basicity refining slag for slag washing for steel-making of revolving furnace |
| 12/02/2009 | CN100564547C Micro-alloy composite core-spun yarn for high-strength structure steel |
| 12/02/2009 | CN100563871C Crystallizer protecting cinder for continuous casting of crack sensitive steel and its preparation process |
| 12/01/2009 | CA2473154C Methods employing permanent magnets having reach-out magnetic fields for electromagnetically pumping, braking, and metering molten metals feeding into metal casting machines |
| 11/26/2009 | WO2009142028A1 Inversely inclined full-lining structure |
| 11/26/2009 | WO2009090226A9 Process for preparing a foaming slag former, product and use thereof |
| 11/26/2009 | US20090288520 Vapor-Reinforced Expanding Volume Of Gas To Minimize The Contamination Of Products Treated In A Melting Furnace |
| 11/25/2009 | EP2123784A1 Si KILLED STEEL WIRE MATERIAL HAVING EXCELLENT FATIGUE PROPERTY AND SPRING |
| 11/25/2009 | CN201351170Y Molten steel inclusion removing device |
| 11/25/2009 | CN201351169Y Hot metal pretreatment desulphurization lance |
| 11/25/2009 | CN101586450A Petroleum casing pipe with high strength and high toughness and preparing method thereof |
| 11/25/2009 | CN101586210A High strength enamel steel and producing technology and enamel firing technology thereof |
| 11/25/2009 | CN101586205A Method for producing low-alloy peritectic steel by medium-thickness slab caster |
| 11/25/2009 | CN101586177A Method for reducing titanium inclusion of molten steel |
| 11/25/2009 | CN101586176A Calcium based molten iron/semisteel desulfurizing agent and preparation method thereof |
| 11/25/2009 | CN101586175A Low magnesium type molten iron/semisteel desulfurizing agent and preparation method thereof |
| 11/25/2009 | CN101586174A Steel two-slag purifying method for ultra-cleaning welding |
| 11/25/2009 | CN101585083A Inactivating magnesium desulfurizing agent and preparation method thereof |
| 11/25/2009 | CN101585078A Method for casting as-cast high-tenacity cast iron bearing cover of locomotive |
| 11/19/2009 | US20090283182 Method of Making a High Strength, High Toughness, Fatigue Resistant, Precipitation Hardenable Stainless Steel and Product Made Therefrom |
| 11/18/2009 | CN201347442Y Furnace shell for argon oxygen decarburization furnace |
| 11/18/2009 | CN201347441Y Rotary baffle plate mechanism used on can lid of vacuum-oxygen decarbonizing ladle refining furnace |
| 11/18/2009 | CN201347440Y Inner shielding cover for vacuum oxygen decarbonization ladle furnace |
| 11/18/2009 | CN201347439Y Calcium-aluminum cored wire |
| 11/18/2009 | CN101580919A Medium-carbon cast steel shot or medium-carbon cast steel grit and preparation method thereof |
| 11/18/2009 | CN101580912A Low carbon high sulfur free-cutting steel production process |
| 11/18/2009 | CN100560773C High-strength anti-fatigue steel and manufacturing method thereof |
| 11/18/2009 | CN100560771C High ductility steel strip for J55 petroleum sleeve and manufacturing method thereof |
| 11/18/2009 | CN100560769C Low-carbon superfine inclusion reinforcement screw-thread steel and manufacturing method thereof |
| 11/18/2009 | CN100560767C Method for realizing direct nickel alloying in stainless steel smelting process by electric arc furnace |
| 11/18/2009 | CN100560766C Melt treating method of high-vanadium high-speed steel roller material for various rolling machines |
| 11/18/2009 | CN100560747C Micro-alloying refined synthetic slag and preparation method thereof |
| 11/18/2009 | CN100560746C Synthetic slag for smelting low-silicon steel |
| 11/18/2009 | CN100560745C Oxidized powder preparation for reinforcing liquid steel decarburization |
| 11/18/2009 | CN100560744C Technique for manufacturing ultra-low phosphate steel by molten steel refining and dephosphorizing outside furnace |
| 11/18/2009 | CN100560743C Method for producing ultra-low phosphate steel by molten steel dephosphorizing outside furnace |
| 11/18/2009 | CN100560742C Technique for controlling accurate addition of micro-element in steel |
| 11/18/2009 | CN100560741C Refined-smelting ladle furnace calcium carbide deoxidation method |
| 11/17/2009 | US7618582 Continuous steel production and apparatus |
| 11/17/2009 | CA2392938C Apparatus and process to extract heat and to solidify molten material particles |
| 11/12/2009 | WO2009115749A3 Process and plant for manufacturing a foaming slag activator from rubber waste |
| 11/12/2009 | US20090277304 Process for production of fe based amorphous alloy |
| 11/11/2009 | CN201344729Y Repaired structure for working lining at middle part of vertical vacuum refining furnace |
| 11/11/2009 | CN201343551Y RH furnace |