C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups

Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430)
11/2011
11/23/2011	CN101845538B Method for controlling vigorous splash during smelting stainless steel in vacuum oxygen decarburization refining furnace
11/23/2011	CN101831524B Desulfurization slag system of ultralow-sulfur raw steel and preparation and application methods thereof
11/23/2011	CN101613787B Liquid steel high-efficiency composite refining agent
11/23/2011	CN101596589B Production method of steel shot aluminum
11/17/2011	WO2011142356A1 High-strength steel sheet and method for producing same
11/17/2011	DE102010003841B3 Transport unit for transporting additives such as cobalt for melting to foundry, has partial containers that are opened by positioning props of aperture unit on respective containers
11/16/2011	CN202039113U Cored wire
11/16/2011	CN202039088U Air brick with warning mark
11/16/2011	CN202039087U Mechanical agitating desulfurization blowing feeding system
11/16/2011	CN102242315A Oxide metallurgy method for refining structure of wheel steel
11/16/2011	CN102242309A Production method of boron-containing petroleum storage tank steel plate for ultra-high heat input welding
11/16/2011	CN102242278A Method for manufacturing zinc and aluminum iron silicon type deoxidizer in vacuum by utilizing hot-dipping aluminum slag
11/16/2011	CN102242241A Method for controlling excessive impurity in heavy rail steel with operation speed of 350 kilometer/hour and over
11/16/2011	CN102242240A AOD furnace
11/16/2011	CN102242239A Molten iron pre-dephosphorization method by utilizing top and bottom combined blown converter
11/16/2011	CN102242238A Method for controlling excessive aluminum content in heavy rail steel with operation speed of 350 kilometer/hour and over
11/16/2011	CN101899629B Abrasion-resistant alloy cast steel and manufacturing equipment thereof
11/16/2011	CN101899628B Abrasion-resistant alloy cast steel and manufacturing method thereof
11/16/2011	CN101713054B Large thickness steel plate for hydrogenation reaction chamber reeling equipment and production method thereof
11/16/2011	CN101701316B Automobile beam steel with tensile strength of 590MPa and manufacturing method thereof
11/16/2011	CN101563476B Steel plate for producing light structures and method for producing said plate
11/16/2011	CN101497965B Steel for cutting edge of shovel of loader and digger and production method thereof
11/15/2011	US8057737 Forging steel and its manufacturing method, and forged parts
11/15/2011	US8057570 Electric arc furnace steelmaking
11/09/2011	CN202030784U Gas-permeable brick combined with metal pipes
11/09/2011	CN202030783U Device for detecting air permeability of gas supply pipelines of RH refining furnaces
11/09/2011	CN102234744A Ultra-pure alloy and method for manufacturing turbine rotor forging by using same
11/09/2011	CN102234742A Steel plate for longitudinal welded pipe and manufacturing method thereof
11/09/2011	CN102234737A Copper-containing ferritic antibacterial stainless steel and method for manufacturing cold-rolled sheet of copper-containing ferritic antibacterial stainless steel
11/09/2011	CN102234734A Production process of modified alloy ball iron roller
11/09/2011	CN102234706A Method for refining grains of heavy forging steel of nuclear reactor evaporator
11/09/2011	CN102234703A On-line thermal state cleaning method for accumulated burl on mechanical desulfuration stirring paddle by using knotted reactor (KR) method
11/09/2011	CN102234702A Method for controlling content of oxygen in steel
11/09/2011	CN102234701A Silicon-barium-strontium-iron alloy deoxidizer
11/09/2011	CN101805817B Method for smelting ultra-low hydrogen steel by using single-nozzle refining furnace
11/09/2011	CN101736114B Composition for slag formation and preparation and use method thereof
11/03/2011	WO2011136724A1 Ferritic stainless steel, with high and stable grain refining potency, and its production method.
11/03/2011	WO2011135897A1 Free-cutting stainless-steel material for precision processing and process for producing same
11/03/2011	US20110265607 Process for the introduction of inorganic solids into hot liquid melts
11/02/2011	CN202022956U VD furnace argon blowing control device
11/02/2011	CN202022955U Steam supply device for RH refining furnace
11/02/2011	CN102230121A Refining method of T91 heat-resistant steel tube blank
11/02/2011	CN102230056A Novel technology for smelting and modifying superhigh manganese steel
11/02/2011	CN102230055A Induction furnace capable of blowing inert gas towards inside of furnace
11/02/2011	CN102230054A Novel process for producing super high manganese steel casting
11/02/2011	CN102230051A Method for controlling nitrogen content in steel by semi-steel smelting
11/02/2011	CN102230050A Method for controlling nitrogen content in 350 km/h and above heavy-rail steel
11/02/2011	CN102230048A Composite desulfurizing agent for molten-iron furnace external refining and spraying
11/02/2011	CN101787413B Granular heat-preserving covering flux for hot metal in steelmaking
11/02/2011	CN101787403B Short process production technique for preparing casting of wind power generation equipment
11/02/2011	CN101736121B Method for smelting 07Cr2MoW2VNbB steel in electric furnace and using same to form round pipe billets through horizontal continuous casting
11/02/2011	CN101619377B Deslagging and dephosphorizing method of electric stove
11/01/2011	US8048197 Low carbon steel sheet and low carbon steel slab and process for producing same
11/01/2011	US8048196 Method and device for producing stainless steel without using a supply of electrical energy, based on pig-iron that has been pre-treated in a DDD installation
10/2011
10/27/2011	US20110260378 Water-cooled cover for a treatment vessel for metal melts
10/26/2011	EP2380996A1 Wire for treating metal melts in a steel pan
10/25/2011	US8043401 Method for the reduction of a slag having a high degree of chromium in an electric arc furnace
10/19/2011	CN102220546A B-containing medium-carbon non-quenched and tempered steel and production method thereof
10/19/2011	CN102220456A Submerged arc refining slag and preparation method thereof
10/19/2011	CN102220455A Production method for high alkalinity steel-making refining slag
10/19/2011	CN102220454A Steelmaking method of microalloy steel with added vanadium nitride alloy in steel
10/19/2011	CN102220453A Dephosphorization method of semi-steel
10/19/2011	CN102220452A Method for duplex dephosphorization of intermediate frequency furnace and vacuum induction furnace
10/19/2011	CN102220448A Method for smelting uniform end-point molten steel composition with converter
10/19/2011	CN102218524A Novel energy-saving molten steel tank
10/13/2011	WO2011127402A1 Ultrasonic degassing of molten metals
10/12/2011	CN202007251U Failing top lance deposited slag detection device
10/12/2011	CN202007250U Automatic connector for electromagnetic argon blowing device
10/12/2011	CN202007249U Self-centering connector for argon blowing device
10/12/2011	CN202007248U Deoxidization device with applied direct-current electric field between metal and slag
10/12/2011	CN202007247U Electrode applied to deoxidation method for external direct current electric field of slag-metal workshop
10/12/2011	CN202007246U Device for deoxidizing slag under action of external electric field between slag and metal
10/12/2011	CN102216001A Porous magnesia clinker, manufacturing method and use thereof as flux for treating steelmaking slag
10/12/2011	CN102212747A Low-cost steel for automobile beam and manufacturing method thereof
10/12/2011	CN102212737A Core-spun thread and method for implementing molten steel vanadium-nitrogen alloying
10/12/2011	CN102212736A Method for preparing niobium microalloy steel by using low-niobium molten iron
10/12/2011	CN102212703A Impellar for dispersing gas into molten metal
10/12/2011	CN102212654A Arrangement structure of double-station RH multifunctional top lance
10/12/2011	CN102212653A Method for designing bent pipe rotating device
10/12/2011	CN102212652A Rapid degassing method of vacuum induction furnace
10/12/2011	CN102212651A Steel ladle powder injection desulfuration refining process for low-sulfur steel production
10/12/2011	CN102212650A Method for controlling oxygen in low-carbon low-silicon-aluminum (Al) killed steel
10/12/2011	CN102212649A Iron alloy for silicon-based steel making composite deoxidizer and preparation method of iron alloy
10/12/2011	CN102212648A Building method of ladle slag lines in ladle refining furnace (LF)
10/12/2011	CN102212647A Anti-rephosphorization gent made from composite basic oxide and used for molten steel secondary refining
10/12/2011	CN102212638A Refining method of molten iron in ladle and devices required by same
10/12/2011	CN102211180A Steel ladle
10/12/2011	CN102211159A Production method of steel for 82 B steel stranded wires
10/12/2011	CN101736198B Hot rolled band for container and method for manufacturing same
10/12/2011	CN101709347B Method for producing passive metal particle, metal powder or passive lime
10/12/2011	CN101633038B Method for reducing surface defect of stainless steel continues casting blank
10/11/2011	CA2677674C Method for the reduction of a slag having a high degree of chromium in an electric arc furnace
10/05/2011	CN201999963U Residual heat recycling and heat preserving device of Ruhrstahl-Heraeus (RH) molten steel refining vacuum groove
10/05/2011	CN201999962U Automatic top lance fixing device
10/05/2011	CN201999961U Gas whirling cooling type feed gun
10/05/2011	CN201999960U Ferroniobium cored wire
10/05/2011	CN102206791A Mo-containing ferritic stainless steel and manufacturing method thereof
10/05/2011	CN102206788A Steel and production method thereof
10/05/2011	CN102206783A Molten steel alloying cored wire and method
10/05/2011	CN102206735A Production method of stainless steel motor shaft

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