| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 04/17/2013 | CN202881309U Solid calcium-aluminum core-spun wire |
| 04/17/2013 | CN103045970A Extra-thick hydrogen present 15CrMoR steel plate and production method thereof |
| 04/17/2013 | CN103045967A Pearlite alloy steel as well as application and preparation method thereof |
| 04/17/2013 | CN103045966A High-quality and high-yield strength structural steel S620QL1 steel plate and production method thereof |
| 04/17/2013 | CN103045948A High-chromium steel and manufacturing method thereof |
| 04/17/2013 | CN103045944A High-toughness steel for petroleum casing and manufacturing method of petroleum casing |
| 04/17/2013 | CN103045935A Control method for surface decarburization and ferrite distribution of steel disc bar of spring |
| 04/17/2013 | CN103045930A Deoxidation alloying production process for low-carbon aluminum killed steel |
| 04/17/2013 | CN103045807A Vacuum circulation degassing insert tube |
| 04/17/2013 | CN103045806A Method for controlling low-melting-point inclusion in high-strength low-alloy steel |
| 04/17/2013 | CN103045805A Low-cost melted iron heat preservation agent and manufacturing method thereof |
| 04/17/2013 | CN103045804A Method for smelting stainless steel with ultra-low carbon and nitrogen content |
| 04/17/2013 | CN103045803A Process for producing low-silicon clean molten steel |
| 04/17/2013 | CN103045802A Method for reducing energy consumption per ton steel |
| 04/17/2013 | CN103045801A Wire adding machine of wire stock |
| 04/17/2013 | CN103045800A Wire stock conveyor and method |
| 04/17/2013 | CN103045799A Wire stock conveying device and method |
| 04/17/2013 | CN103045798A Real-time temperature prediction method of refined-smelting ladle furnace refining process |
| 04/17/2013 | CN103045797A Conveyor for various component wires |
| 04/17/2013 | CN103045796A Aluminum powder core-coating device and preparation method thereof |
| 04/17/2013 | CN103045793A Vacuum smelting device for converter and use method of vacuum smelting device |
| 04/17/2013 | CN103045792A Smelting technology of low-sulfur steel for thick plates during whole-course bottom blowing nitrogen production of converter |
| 04/17/2013 | CN103045778A Recycling method of LF scrap ladle slag inclusion |
| 04/17/2013 | CN102443684B Cinder modifier composition for casting and use method thereof |
| 04/17/2013 | CN102383065B High-performance valve steel |
| 04/17/2013 | CN102337371B Control method for enabling resulfurization amount of low-sulfur molten iron to be lower than 10ppm in smelting process of converter |
| 04/17/2013 | CN102242240B AOD furnace |
| 04/17/2013 | CN102242239B Molten iron pre-dephosphorization method by utilizing top and bottom combined blown converter |
| 04/17/2013 | CN102212651B Steel ladle powder injection desulfuration refining process for low-sulfur steel production |
| 04/17/2013 | CN102134628B Smelting method of low-carbon aluminium killed steel with low silicon content |
| 04/10/2013 | CN202865258U Top lance for vacuum refining of molten steel |
| 04/10/2013 | CN202865257U Double-station mechanical vacuumizing RH liquid steel refining device |
| 04/10/2013 | CN103038372A Ultrasonic degassing of molten metals |
| 04/10/2013 | CN103031490A Production method for controlling fault detection defect of medium thick plate Q345 steel |
| 04/10/2013 | CN103031482A Manganese alloying method for duplex stainless steel |
| 04/10/2013 | CN103031411A Method for relieving slag bonding for insertion tube of vacuum chamber |
| 04/10/2013 | CN103031410A Method for treating desulfuration residue by preparing efficient blocker with waste materials of steelmaking |
| 04/10/2013 | CN103031409A Novel process of steelmaking deoxidization by utilizing precipitator dust of refining furnace |
| 04/10/2013 | CN103031408A Method for controlling silicon return through low-silicon aluminum killed steel LF furnace process deep desulfuration |
| 04/10/2013 | CN103031402A Production method for high-strength aseismic steel bar HRB400E |
| 04/10/2013 | CN103031401A Method for converter steelmaking by LF (Ladle Furnace) refining furnace reducing slag |
| 04/10/2013 | CN102453831B Method for smelting high-chromium steel and high-chromium steel |
| 04/10/2013 | CN102277473B Production process capable of improving qualification rate in flaw detection of medium steel plates |
| 04/10/2013 | CN102260827B Method for preparing drill collar steel |
| 04/10/2013 | CN102220454B Steelmaking method of microalloy steel with added vanadium nitride alloy in steel |
| 04/10/2013 | CN101705335B Micro-alloying compound cored wire for high-strength steel |
| 04/03/2013 | CN202849481U Insert tube for vacuum refining furnace |
| 04/03/2013 | CN202849480U Insert tube for vacuum refining furnace |
| 04/03/2013 | CN202849479U Vacuum refining device |
| 04/03/2013 | CN202849478U VD (vacuum distillation) vacuum furnace shielding furnace cover |
| 04/03/2013 | CN202849477U Pure calcium core-spun wire for steel-making |
| 04/03/2013 | CN202845767U Steel ladle purification bottom blowing integral air brick |
| 04/03/2013 | CN103014537A Smelting method of steel used in high speed passenger train hollow axle |
| 04/03/2013 | CN103014536A High-carbon high-chromium stainless bearing steel and preparation method thereof |
| 04/03/2013 | CN103014516A Borated low-alloy high-speed steel roller and manufacturing method thereof |
| 04/03/2013 | CN103014327A Chrome-manganese ore composite pellets for argon oxygen refinement furnace, and preparation method thereof |
| 04/03/2013 | CN103014244A Induction melting vacuum degassing device |
| 04/03/2013 | CN103014243A Alloy feed opening of vacuum finery |
| 04/03/2013 | CN103014242A Smelting slagging agent and smelting slagging method adopting AOD (Argon Oxygen Decarburization) double slag process |
| 04/03/2013 | CN103014241A Control method of smelting slag of SPHD steel for LF (Ladle Furnace) furnace |
| 04/03/2013 | CN103014240A Refining method of eccentric argon bottom blowing by inserting impregnation cylinder into ladle |
| 04/03/2013 | CN103014239A Production method of ER308L steel grade in 300 series stainless steel |
| 04/03/2013 | CN103014238A AOD converter side blowing gun pipeline system flow control method |
| 04/03/2013 | CN103014237A Dephosphorization slag forming constituent and production method thereof |
| 04/03/2013 | CN103014236A Dual mode dephosphorization method carrying out in hot-metal ladle |
| 04/03/2013 | CN103014235A Deoxidizing process for reducing consumption of aluminum killed steel deoxidizing agent |
| 04/03/2013 | CN103014234A Method for smelting silicon-calcium-barium and silicon-calcium-barium product manufactured by same |
| 04/03/2013 | CN103014233A Sealing method of metallurgy material |
| 04/03/2013 | CN103014232A Clad wire for producing vermicular graphite cast iron through wire feeding technology and preparation method of vermicular graphite cast iron |
| 04/03/2013 | CN103014222A Method for reducing smelting cost of high carbon steel and medium carbon steel |
| 04/03/2013 | CN103014221A Method for producing high-aluminum steel plate blanks |
| 04/03/2013 | CN103014220A Method for controlling impurities in high-carbon steel |
| 04/03/2013 | CN103014217A Desulfurizing agent and application thereof as well as molten iron krypton (KR) desulfurization method |
| 04/03/2013 | CN103014195A Novel method for modification of KR desulfuration residue |
| 04/03/2013 | CN103008631A Steel ladle capping device |
| 04/03/2013 | CN103008630A Capping device for steel ladle |
| 04/03/2013 | CN102465194B Dephosphorization method of molten iron for stainless steel production |
| 04/03/2013 | CN102312166B Stanniferous ferrite stainless steel and smelting method thereof |
| 04/03/2013 | CN102268602B 3Cr oil well pipe and production method thereof |
| 04/03/2013 | CN102251076B RH vacuum refining method of ultra-low carbon stainless steel |
| 04/03/2013 | CN102181794B Hardening and tempering high-strength steel plate for wood based panel equipment and production method of tempering high-strength steel plate |
| 04/03/2013 | CN102031338B Method for nitriding molten steel stably |
| 04/03/2013 | CN102010934B RH refining desulphurization process of non-oriented electrical steel |
| 04/03/2013 | CN101994052B Nitrogen-containing austenitic alloy |
| 04/03/2013 | CN101684534B Steel plate adapting to large-linear energy welding and manufacturing method thereof |
| 04/02/2013 | US8409320 Process for producing a foamed slag on austenitic stainless melts in an electric arc furnace |
| 03/27/2013 | CN202830080U Rhein stahl Huttenwerk A. G. (RH) vacuum refining furnace spinning reserve lance rack |
| 03/27/2013 | CN202830079U Slag overflow protective device of vacuum refining furnace |
| 03/27/2013 | CN202830078U Detachable hot bend for vacuum degassing refining furnace |
| 03/27/2013 | CN202830077U Straight barrel type vacuum refining device |
| 03/27/2013 | CN202830076U Pure-calcium wire composite cored wire |
| 03/27/2013 | CN102994895A Microalloyed high-strength high-toughness steel for geological drilling and production technology thereof |
| 03/27/2013 | CN102994871A Method for smelting medium/high-carbon hard-wired steel by vanadium-titanium containing molten iron |
| 03/27/2013 | CN102994870A Formula and casting method capable of overcoming visual defects of cast machining surface |
| 03/27/2013 | CN102994794A Ferrosilicon |
| 03/27/2013 | CN102994703A Method for recycling LF refining slag of RH furnace |
| 03/27/2013 | CN102994702A Process for utilizing fretsaw silicon mud to produce steel ladle dreg modifying agent for low-oxygen high-carbon steel |
| 03/27/2013 | CN102994701A Method for thinning size of argon gas bubbles during refining |
| 03/27/2013 | CN102994700A Smelting method for stably increasing content of boron in boron-containing steel |
| 03/27/2013 | CN102994699A Repairable diffuse type air brick |