| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 07/22/2009 | CN100516241C Composite alloy with deoxidized and corrosion protected aluminum chromium |
| 07/21/2009 | US7563303 Low cost; for slags |
| 07/15/2009 | CN100513588C Composite alloy in use for deoxidized alloying in steel making and preparation method |
| 07/09/2009 | US20090173187 Manufacture of Ferroalloys |
| 07/08/2009 | EP1532282B8 Metallurgical slag |
| 07/08/2009 | CN201268712Y Blast furnace coal powder mutual spraying apparatus |
| 07/08/2009 | CN101476022A RH dry type vacuum refining apparatus |
| 07/08/2009 | CN101476021A Vacuum refining desulfurizer containing strontia |
| 07/08/2009 | CN101476020A Aluminum calcium alloy for steel melting deoxidation and production method thereof |
| 07/08/2009 | CN101476019A Micro-aluminium silicon-barium-calcium-magnesium composite alloy |
| 07/08/2009 | CN101476018A Method for improving steel plate heat-affected zone toughness of steel plate under high input energy welding condition |
| 07/08/2009 | CN101476017A Aluminum-calcium deoxidation and desulphurization slag remover for metallurgy |
| 07/08/2009 | CN100510112C Short-flow super low carbon steel ultra-low sulphur smelting control method |
| 07/08/2009 | CN100510111C Molten iron desulfurization stir head |
| 07/01/2009 | EP2074370A1 Production of an inert blanket in a furnace |
| 07/01/2009 | EP1765971A4 Method and apparatus for carrying out a metallurgical process |
| 07/01/2009 | CN201265026Y Top lance with camera shooting function |
| 07/01/2009 | CN201265025Y Bottom anode side conductive direct current ladle furnace |
| 07/01/2009 | CN101469358A Granule magnesium molten iron desulfuring spray gun |
| 07/01/2009 | CN101469357A Reverse V-shaped granule magnesium molten iron desulfuring spray gun |
| 07/01/2009 | CN100507022C Method for AOD whole melted iron directly smelting austenitic stainless steel |
| 07/01/2009 | CN100507021C LF composite deoxidization reducer |
| 07/01/2009 | CN100507020C Method for smelting heat-resistant anti-fatigue steel |
| 07/01/2009 | CN100507019C Desilication technology for chromium-containing melted iron |
| 07/01/2009 | CN100507018C Method for determining oxygen blowing amount and cold material feeding amount in RH refining process |
| 07/01/2009 | CN100507014C Method for producing low carbon steel |
| 06/30/2009 | US7553383 Method for fabricating a martensitic steel without any melting |
| 06/25/2009 | WO2009076923A2 Method for producing a steel melt containing up to 30% of manganese |
| 06/25/2009 | US20090158892 System and method for producing metallic iron |
| 06/24/2009 | CN201261791Y Molten steel argon blowing spray gun |
| 06/24/2009 | CN101463413A Composite type ladle top slag modifier and production method thereof |
| 06/24/2009 | CN101463412A Deep desulfurization method using premelted slag in RH vacuum furnace |
| 06/24/2009 | CN101463411A Low carbon steel sheet, low carbon steel cast piece and method for production thereof |
| 06/24/2009 | CN101463410A Method for producing ultra-low-carbon steel by duplex process |
| 06/18/2009 | WO2009074736A1 Method for making stainless steel comprising fine carbonitrides and product obtained by said method |
| 06/17/2009 | CN201258343Y Oxygen lance |
| 06/17/2009 | CN101457281A RH decarburization method during ultra-low-carbon steel production process by revolving furnace |
| 06/17/2009 | CN101457280A Pneumatic device of RH feeding system |
| 06/17/2009 | CN101457279A Method for improving RH vacuum furnace bottom groove life |
| 06/17/2009 | CN101457278A Method for refining high chromium ferritic stainless steel for reducing carbon |
| 06/17/2009 | CN101457277A Steel-core aluminum deoxidizing agent blocks and method for producing the same |
| 06/17/2009 | CN101457276A Slag nonpollution deoxygenation method capable of regulating anode oxygen partial pressure and device thereof |
| 06/17/2009 | CN100500876C Method for manufacturing integral vacuum chamber of vacuum refining device |
| 06/17/2009 | CN100500875C Compound molten iron desulfurizer |
| 06/17/2009 | CN100500874C Method of pre-fining molten steel in tapping process |
| 06/16/2009 | US7547409 Compact micro-porous media degasser |
| 06/16/2009 | CA2444175C Reinforced durable tool steel, method for the production thereof, method for producing parts made of said steel, and parts thus obtained |
| 06/11/2009 | WO2009071137A1 Device for secondary and vacuum metallurgical treatment of liquid steel |
| 06/11/2009 | US20090145572 Method for controlling a molten metal bath bubbling in a metallurgical vessel and a device for carrying out said method |
| 06/10/2009 | CN201254588Y Rotary spray gun for molten iron desulphurization |
| 06/10/2009 | CN201254587Y Desulfurization agitator head for hot metal |
| 06/10/2009 | CN201254586Y Plug-in line feeder |
| 06/10/2009 | CN101451179A RH ladle double jacking apparatus |
| 06/10/2009 | CN101451178A Quick-speed replacement method of vacuum chamber for single station RH fining furnace |
| 06/10/2009 | CN101451177A Deoxidizing agent and deoxidizing method for non-metal composite steel-smelting |
| 06/10/2009 | CN101451176A Deoxidizing agent |
| 06/10/2009 | CN101451175A Smelting method of high level detecting steel |
| 06/10/2009 | CN101451174A Deslagging process of unrefined steel |
| 06/10/2009 | CN100497661C Low carbon steel sheet, Low carbon steel cast piece and method for production thereof |
| 06/09/2009 | CA2440404C Refractory plug or brick for injecting gas into molten metal |
| 06/04/2009 | WO2009069794A1 Method and apparatus for treating high-temperature slag |
| 06/04/2009 | DE102008027006A1 Vorrichtung zur sekundär- und vakuum-metallurgischen Behandlung von flüssigem Stahl Apparatus for secondary and vacuum-metallurgical treatment of molten steel |
| 06/04/2009 | DE102007058225A1 Producing heterogeneous grain-refining agent for metallic materials such as melt-admixture for the production of products by casting process, comprises introducing two fine-grain materials in a mixer, and introducing the air into the mixer |
| 06/03/2009 | EP2064360A2 Steel plate for producing light structures and method for producing said plate |
| 06/03/2009 | CN201250250Y 氧枪通道密封装置 Oxygen lance channel sealing device |
| 06/03/2009 | CN201250249Y Swirl spray nozzle of a refining furnace |
| 06/03/2009 | CN201250248Y Spray nozzle of refining furnace |
| 06/03/2009 | CN201250247Y Multifunctional spray nozzle of refining furnace |
| 06/03/2009 | CN201250246Y Swirl spray nozzle of refining furnace |
| 06/03/2009 | CN201250245Y Blowing mixing desulfurizing device |
| 06/03/2009 | CN101445860A Magnesia mixture desulphurization spray gun for molten iron pretreatment |
| 06/03/2009 | CN101445859A Auxiliary desulphurizing device implemented by powder injection in torpedo and process thereof |
| 06/03/2009 | CN101445858A Method for treating inclusions in hot-rolled steel plates for welded gas cylinder |
| 06/03/2009 | CN101445857A Method for preparing Al-Ca alloy |
| 06/03/2009 | CN101445856A Method for dehydrogenating molten steel by cored-wire containing chloride |
| 06/03/2009 | CN101445855A Boron-iron and iron-titanium composite cored wire and application thereof |
| 06/03/2009 | CN100494414C Bottom blowing method for KR method desulfurizing tank |
| 06/03/2009 | CN100494413C Melted iron desulfuration pretreatment furnace slag modifier and method for making same |
| 06/03/2009 | CN100494412C Process of treating BaO stainless steel oxidation dephosphorizing slag |
| 06/03/2009 | CN100494411C Aluminium calcium strontium composite premelting slag for molten steel secondary-refining |
| 06/02/2009 | CA2455072C Electromagnetic method and apparatus for treatment of engineering materials, products, and related processes |
| 05/27/2009 | CN201245683Y Electrohydraulic bent tube walking and elevating trolley |
| 05/27/2009 | CN101443468A High cleanliness spring steel and high cleanliness spring having excellent fatigue property |
| 05/27/2009 | CN101443464A Method in connection with steel production |
| 05/27/2009 | CN101443463A Steel for forging, process for producing the same, and forged article |
| 05/27/2009 | CN101441187A RH vacuum refining top gun powder spraying test device and method |
| 05/27/2009 | CN101440461A Casinghead gas corrosion resistant pumping rod steel and manufacturing method thereof |
| 05/27/2009 | CN101440422A Top lance power injection apparatus and method for RH vacuum refining |
| 05/27/2009 | CN101440421A Molten iron desulfuring spray gun |
| 05/27/2009 | CN101440420A Nitrogen increasing method for nitrogen-containing gear steel production process |
| 05/27/2009 | CN101440418A Desulfuring spray gun |
| 05/27/2009 | CN101439392A Method for producing steel for self-tapping screw for continuous casting production of billet |
| 05/27/2009 | CN101439351A Centrifugal casting production method of high-boron high-speed steel composite roller |
| 05/27/2009 | CN100491721C Multi-stage type vacuum pumping device and vacuum pumping method thereof |
| 05/27/2009 | CN100491574C C-Mn-Ti-Nb series hot-rolled high strength high magnetic induction performance steel and manufacturing method thereof |
| 05/27/2009 | CN100491572C Manufacture method for front brake disc cast for use in car |
| 05/26/2009 | US7537638 Metallurgical slag |
| 05/22/2009 | WO2009063660A1 Steel for steel pipes excellent in sour resistance and process for manufacturing the same |
| 05/20/2009 | EP2060640A1 Fire-resistant light granules and method of their production |
| 05/20/2009 | CN201241171Y Novel seal ring of RH vacuum furnace |