| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 08/24/2011 | CN102161491A Preparation method of pre-melted calcium aluminum for steel making |
| 08/24/2011 | CN102161139A Production method for manufacturing steel wire rod for X80 pipe line steel submerged arc welding wire |
| 08/24/2011 | CN101768656B Method for refining ultra-low carbon ferritic stainless steel under vacuum |
| 08/24/2011 | CN101736129B Method for removing total oxygen in molten steel |
| 08/24/2011 | CN101532113B Anti-collapse oil casing and manufacturing method thereof |
| 08/17/2011 | EP2355945A1 Porous magnesia clinker, manufacturing method and use thereof as flux for treating steelmaking slag |
| 08/17/2011 | CN201935576U 一种变质剂加料装置 One kind of modifier feeding device |
| 08/17/2011 | CN201933104U 一种炼钢用脱硫喷吹罐流态化室 One kind of steel desulfurization injection tank with fluidized chamber |
| 08/17/2011 | CN102155439A Vacuum degree regulating system for steam injection pump |
| 08/17/2011 | CN102154535A Vacuum degree gas saving regulation system |
| 08/17/2011 | CN102154534A Arc furnace smelting high-sulfur alloy steel and preparation method thereof |
| 08/17/2011 | CN101343714B 30CrMnSiB steel, weldless steel tube for cylinder and method of manufacturing the same |
| 08/16/2011 | US7998400 Gas supply system for a metallurgical furnace and method for operating this system |
| 08/16/2011 | US7998243 Method of producing steel with high manganese and low carbon content |
| 08/16/2011 | US7998242 Method and apparatus for carrying out a metallurgical process |
| 08/16/2011 | US7998237 Method and installation for the production of steel products having an optimum surface quality |
| 08/10/2011 | EP2354259A1 Vacuum circulation gas removal assembly with ignitor |
| 08/10/2011 | EP2352607A2 Method for exchangeably fastening a refractory purge plug or sleeve and a container for molten metal |
| 08/10/2011 | CN201926508U 基于在线温度及铁含量检测的炼钢过程和终点控制系统 Online based steelmaking process temperature and iron content detection and endpoint control system |
| 08/10/2011 | CN201924040U 顶吹氧枪装置 Top-blown lance means |
| 08/10/2011 | CN201924039U Degassing rotor |
| 08/10/2011 | CN1818088B Steel smelting and carburating method |
| 08/10/2011 | CN102146503A Vacuum circular degassing system with igniting burner |
| 08/10/2011 | CN102146502A RH (ruhrstahl heraeus) clean steel smelting and deep decarburization process |
| 08/10/2011 | CN102146501A Refining method for producing stainless steel by VOD (vacuum oxygen decarburization) blowing CO2 |
| 08/10/2011 | CN102146500A Fluxing agent for smelting steel as well as preparation and use methods thereof |
| 08/10/2011 | CN102146499A Smelting method for making stainless steel by blowing CO2 in argon oxygen decarburization (AOD) |
| 08/10/2011 | CN102146498A Refining method for producing low carbon steel by blowing CO2 with ANS (Automatic Noise Suppression) refining furnace |
| 08/10/2011 | CN102146497A Refining method for producing extremely low carbon steel by RH (ruhrstahl heraeus) blowing CO2 |
| 08/10/2011 | CN102146496A Pollution-free deoxidation refining device for molten steel by extra electrical field and application method thereof |
| 08/10/2011 | CN102146495A Surface modified superfine powder and production method of surface modified superfine powder |
| 08/10/2011 | CN102146494A Production method of fine oxide dispersed steel |
| 08/10/2011 | CN102146493A Method for smelting clean steel in electromagnetic induction furnace by blowing CO2 |
| 08/10/2011 | CN102146491A Method for smelting clean steel by supplementation and decarburization with CO2 at end of converter blowing |
| 08/10/2011 | CN101857912B Turbine type stirrer used for molten iron mechanical stirring desulfuration |
| 08/10/2011 | CN101713012B Method for increasing molybdenum yield in stainless steel smelting |
| 08/10/2011 | CN101709430B High manganese steel crusher hammer with high original hardness and manufacturing method thereof |
| 08/10/2011 | CN101709355B Parallel longitudinal arrangement of ladle car track and vacuum chamber trolley replacing track |
| 08/10/2011 | CN101244835B Preliminary melting type calcium aluminate for ultra-clean steel and method of manufacturing the same |
| 08/09/2011 | US7993428 Method for manufacturing molten iron |
| 08/04/2011 | US20110186184 Ferritic stainless steel casting and sheet and method for producing the same |
| 08/03/2011 | CN201915116U 一种真空精炼炉真空罐盖 A vacuum refining furnace vacuum lids |
| 08/03/2011 | CN201915115U 高压水自动清洗装置 Automatic high-pressure water cleaning device |
| 08/03/2011 | CN201915114U 一种炉底吹气净化装置 One kind of bottom blowing purification device |
| 08/03/2011 | CN201915113U 一种炼钢用扒渣倾翻车 One kind of steelmaking slag tipping car |
| 08/03/2011 | CN201913243U 冶炼钢铁过程中去除非金属夹渣物的设备 Nonmetallic slag material removed during steel smelting equipment |
| 08/03/2011 | CN201913236U 具有隔热保温功能的钢包盖结构 Ladle has insulation function cap structure |
| 08/03/2011 | CN201913209U 一种提高钢液洁净度的连铸中间包 A way to improve the cleanliness of molten steel tundish |
| 08/03/2011 | CN102140567A Argon-oxygen refining method for low-carbon ferrochromium alloy |
| 08/03/2011 | CN102140566A Method for improving cleanliness of low-carbon molten aluminum-killed steel |
| 08/03/2011 | CN102140565A Method for pollution-free deoxygenation refining by externally applying electric field to tundish |
| 08/03/2011 | CN101792885B Hot-rolled round steel for high carbon manganese and chrome grinding ball and method for producing same |
| 08/03/2011 | CN101736132B Sintering synthetic slag and production method thereof |
| 08/03/2011 | CN101736127B Preparation method of silicon carbide press balls |
| 07/28/2011 | WO2011090218A1 Mould powder for continuous casting of steel |
| 07/28/2011 | US20110179909 Inlet nozzle for a degassing vessel for metallurgical melting operating according to the rh method |
| 07/27/2011 | CN201908101U Dephosphorization oxygen lance |
| 07/27/2011 | CN102137947A Pearlite rail having superior abrasion resistance and excellent toughness |
| 07/27/2011 | CN102134630A Calcium treatment method for refining molten steel under vacuum |
| 07/27/2011 | CN102134629A Smelting method for low-silicon ultralow-sulphur steel |
| 07/27/2011 | CN102134628A Smelting method of low-carbon aluminium killed steel with low silicon content |
| 07/27/2011 | CN101775464B Micro carbon micro phosphorus aluminum manganese iron alloy as well as production method thereof |
| 07/27/2011 | CN101736123B Boron-containing alloy smelting process with high yield |
| 07/27/2011 | CN101671764B Slag removing device and method used for molten steel vacuum treatment insert tube |
| 07/27/2011 | CN101660098B Hot-rolling seamless steel pipe applicable to high temperature of 580-620 DEG C and high pressure of 24-30MPa and production method thereof |
| 07/27/2011 | CN101619378B Method for deoxidizing molten steel |
| 07/27/2011 | CN101451214B Large thickness novel anti-hydrogen sulfide steel and method for producing the same |
| 07/26/2011 | US7985389 Direct processing of ferrotitania ores and sands |
| 07/26/2011 | CA2525559C Method for recovering metallic elements, especially metallic chromium, from slag containing metal oxides in an electric-arc furnace |
| 07/20/2011 | CN201901685U Ladle refining furnace with double-ladle cart and single station |
| 07/20/2011 | CN201900262U Environment-friendly magnesium particle passivation system |
| 07/20/2011 | CN102127706A High-strength long-fatigue life wheel steel used for heavy truck and manufacturing method thereof |
| 07/20/2011 | CN102127637A Method for utilizing caustic calcined dolomite |
| 07/20/2011 | CN102127619A RH (relative humidity) vacuum circulation control method and device |
| 07/20/2011 | CN102127618A Device and method for refining, oxygenating and deeply decarbonizing molten steel in vacuum |
| 07/20/2011 | CN102127617A Silicon-aluminum-calcium-magnesium alloy as well as preparation method and application thereof |
| 07/20/2011 | CN101787493B Novel high-strength, fatigue-resistant and non-decarburized alloy spring steel and preparation method of steel wire thereof |
| 07/20/2011 | CN101760580B Manufacturing method of high-temperature resistant and creep-resistant cast steel |
| 07/20/2011 | CN101736122B Method for improving recovery rate of smelt nonmagnetic steel aluminum |
| 07/20/2011 | CN101705336B Method for producing medium and low carbon ferromanganese through furnace refining |
| 07/20/2011 | CN101691639B Alloy vessel plate production method thereof |
| 07/20/2011 | CN101660064B Technique for preparing nickel-iron alloy |
| 07/20/2011 | CN101649422B Niobium microalloyed hot rolled steel band and manufacturing method thereof |
| 07/20/2011 | CN101638711B Photographic device inside attachment-type refining furnace |
| 07/20/2011 | CN101613785B Ladle for bottom blowing refining |
| 07/20/2011 | CN101586210B High strength enamel steel and producing technology and enamel firing technology thereof |
| 07/20/2011 | CN101476022B RH dry type vacuum refining apparatus |
| 07/20/2011 | CN101450376B Turbine wicket gate double-refining casting technique |
| 07/20/2011 | CN101397599B Molten steel coolant for vacuum refining |
| 07/14/2011 | WO2011083655A1 Operation method for mechanically stirring chrome-containing molten iron |
| 07/14/2011 | US20110167963 Dual outlet injection system |
| 07/14/2011 | US20110167959 Method and device for introducing dust into a metal melt of a pyrometallurgical installation |
| 07/13/2011 | EP2343390A1 Pearlite rail having superior abrasion resistance and excellent toughness |
| 07/13/2011 | CN101736134B Method to modify the steel slag by aluminothermic reduction reaction |
| 07/13/2011 | CN101492757B Calcium-silicon alloy metallurgical material |
| 07/13/2011 | CN101358323B Seamless steel tube for 27SiMnB steel, cylinder and production method thereof |
| 07/13/2011 | CN101343715B High-strength high-ductility X70 thick-wall seamless pipeline steel and manufacturing method |
| 07/12/2011 | US7976610 Pressure control in direct smelting process |
| 07/07/2011 | WO2011082280A1 Endoprosthesis containing multi-phase ferrous steel |
| 07/07/2011 | US20110163486 Rotary degassers and components therefor |