| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 06/19/2013 | CN103160652A RH (relative humidity) treatment method for phosphorus-containing interstitial-free atom steel |
| 06/19/2013 | CN103160651A Rare-earth adding method of vacuum induction furnace smelting experimental steel |
| 06/19/2013 | CN103160650A Method and system for vibration signal-based ladle argon-blowing monitoring |
| 06/19/2013 | CN103160649A Argon blowing method in steelmaking process |
| 06/19/2013 | CN103160648A Method of smelting ultra-low carbon steel in LF (Ladle Furnace) |
| 06/19/2013 | CN103160647A Oxidization dephosphorization agent outside furnace, and preparation and using methods thereof |
| 06/19/2013 | CN103160646A Desulfurization accident emergency hydraulic device |
| 06/19/2013 | CN103160645A Refining agent used in ladle refining furnace |
| 06/19/2013 | CN103160644A Production device, preparation method and use method of low-nitrogen carburant for clean steel refining |
| 06/19/2013 | CN103160643A Carburant, preparation method of carburant and smelting method of molten iron containing vanadium |
| 06/19/2013 | CN103160635A Process for producing die steel by utilizing converter continuous casting mode |
| 06/19/2013 | CN103160634A Steel-making method and application thereof and continuous casting method |
| 06/19/2013 | CN103160633A Manganese ore slagging agent used in converter steelmaking |
| 06/19/2013 | CN102758052B Control method for RH vacuum processing mode |
| 06/19/2013 | CN102363869B Manufacturing method of free-cutting ferritic stainless steel 430FM |
| 06/19/2013 | CN102296146B Metal slit-type ladle bottom blowing powder injection apparatus |
| 06/19/2013 | CN102021482B Cold-rolled galvanized duplex steel and manufacturing method thereof |
| 06/12/2013 | CN202989205U Vacuum tank with vacuum small cover used for arc heating vacuum treatment refining furnace |
| 06/12/2013 | CN202989204U Expanded and improved AOD (argon oxygen decarburization) furnace |
| 06/12/2013 | CN202989203U Improved firebrick lining structure for AOD (argon oxygen decarburization) furnace |
| 06/12/2013 | CN202989202U Improved gas supply gun for AOD (argon oxygen decarburization) furnace |
| 06/12/2013 | CN202989201U Deoxidizing agent for steelmaking converter |
| 06/12/2013 | CN103154278A RH degassing lower vessel |
| 06/12/2013 | CN103147001A Fireproof hull structure steel and production method thereof |
| 06/12/2013 | CN103146891A Sulfur control process for secondary refining vacuum treatment processes |
| 06/12/2013 | CN103146890A Energy-saving environment-friendly steelmaking refining agent and preparation method thereof |
| 06/12/2013 | CN103146889A Barium ferromanganese molten steel external refining agent and preparation method thereof |
| 06/12/2013 | CN103146888A Molten copper zinc steel external refining agent and preparation method thereof |
| 06/12/2013 | CN103146887A Steel composite refining agents and preparation method thereof |
| 06/12/2013 | CN103146886A Calcium manganese aluminum liquid steel out-of-furnace refining agent and preparation method thereof |
| 06/12/2013 | CN103146885A Method for utilizing industrial waste slag |
| 06/12/2013 | CN103146884A Magnesium aluminum silicon steel water boiler external refine agents and preparation method thereof |
| 06/12/2013 | CN103146883A Smelting method for sulfur-containing low-oxygen gear steel |
| 06/12/2013 | CN103146882A Method for controlling class B inclusions of steel rail for high-speed railway |
| 06/12/2013 | CN103146881A Core-spun yarn for treating compound calcium |
| 06/12/2013 | CN103146880A Steelmaking refining agent bearing zirconium oxide and preparation method thereof |
| 06/12/2013 | CN103146879A Steelmaking refining agent containing modified smectite powder and preparation method thereof |
| 06/12/2013 | CN103146878A Zinc aluminum iron molten steel external refining agent and preparation method thereof |
| 06/12/2013 | CN103146877A Steelmaking refining agent containing bamboo charcoal and preparation method thereof |
| 06/12/2013 | CN103146873A Enriching sludge ball for semisteel steelmaking and slagging method for semisteel steelmaking |
| 06/12/2013 | CN102557694B Steel separating agent for rotary platform and furnace cover of ladle refining furnace and method for preventing steel bonding of rotary platform and furnace cover of ladle refining furnace |
| 06/12/2013 | CN102477473B Method for controlling boron content of boron-containing steel smelted by vacuum induction furnace |
| 06/12/2013 | CN102465239B Method for increasing sulfur yield of high sulfur stainless steel |
| 06/12/2013 | CN102312046B Slag discharge method of single-nozzle refining furnace |
| 06/12/2013 | CN102304606B Slag former and slagging method for semisteel steelmaking |
| 06/12/2013 | CN102296154B Method for reduction refining of high-alloy steel containing oxidizable elements |
| 06/12/2013 | CN102234702B Method for controlling content of oxygen in steel |
| 06/12/2013 | CN101896625B Method for producing a steel melt containing up to 30% of manganese |
| 06/12/2013 | CN101812568B Kalzium metal for deoxidization during steel making |
| 06/05/2013 | CN202968622U Single-mouth vacuum refining device |
| 06/05/2013 | CN202968621U AOD (argon-oxygen decarburization) furnace for stainless steel manufacturing equipment |
| 06/05/2013 | CN202968620U Double-hole rotary fire-resistant spray gun |
| 06/05/2013 | CN202968619U Low-thermal-stress desulfurization spray gun |
| 06/05/2013 | CN202968618U Cyclonic single-spray magnesium liquid iron desulphurization lance |
| 06/05/2013 | CN202968617U Four-bladed molten iron desulphurization stirrer |
| 06/05/2013 | CN202968616U Free-style molten iron desulfurization spray gun |
| 06/05/2013 | CN202968615U Multiple-blade molten iron desulfurization stirring device |
| 06/05/2013 | CN202968614U Rapid spraying gun for spraying powder in molten iron |
| 06/05/2013 | CN202968613U Spraying gun for spraying powder in molten iron |
| 06/05/2013 | CN202968612U Pure calcium/aluminum composite core-spun thread |
| 06/05/2013 | CN202968611U Additive for steel making |
| 06/05/2013 | CN202968593U S-shaped molten iron desulfurization mixer |
| 06/05/2013 | CN202968592U Mechanical stirring device for molten iron desulphurization |
| 06/05/2013 | CN202968591U Molten iron desulfurization mixer |
| 06/05/2013 | CN103131852A Method for utilizing sludge containing vanadium and chromium |
| 06/05/2013 | CN103131821A Slagging constituent and preparation method thereof |
| 06/05/2013 | CN103131820A Silicomanganese efficient absorption alloy ball and preparation method thereof |
| 06/05/2013 | CN103131818A Slagging agent used in converter steelmaking, and preparation method thereof |
| 06/05/2013 | CN102559999B Low-temperature molten iron injection dephosphorization pretreatment method |
| 06/05/2013 | CN102534101B Method and device using convertor waste gas to produce high-quality steam needed by refining furnace in matching way |
| 06/05/2013 | CN102517418B Porous granular low carbon lime and production method thereof |
| 06/05/2013 | CN102424934B Manufacturing method of steel forged component of 18CrNiMo7-6 large gear |
| 06/05/2013 | CN102418042B Novel manufacturing process of phi 300 mm-phi 700 mm high-carbon high-chromium cold-working die steel forged round steel |
| 06/05/2013 | CN102383042B Microalloy HRB400E steel bar containing chrome and nitrogen and production method thereof |
| 06/05/2013 | CN102260835B Nuclear power steel 18MnNiMo and its preparation method |
| 06/05/2013 | CN102260822B Smelting method of high-phosphorus low-sulfur non-oriented electrical steel |
| 06/05/2013 | CN102108432B Submerged arc slag of refining furnace |
| 06/05/2013 | CN102108431B Composite-coating granular magnesium desulfurizer |
| 05/29/2013 | CN202955996U Ignition monitoring mirror |
| 05/29/2013 | CN202955988U Terminal clamp and electrode cross arm coupling mechanism |
| 05/29/2013 | CN202955174U Shock-absorbing device for shaking ladle machine |
| 05/29/2013 | CN202954064U Quick jointing device for automatically and vertically blowing argon into steel ladle |
| 05/29/2013 | CN103122404A BJ molten steel cleaning agent |
| 05/29/2013 | CN102433414B Method for producing 23MnB steel by adopting vacuum process |
| 05/29/2013 | CN102382947B Low-basicity synthetic slag for external refining |
| 05/29/2013 | CN102344989B Pretreatment method of molten iron for desulfurization by wire feeding method |
| 05/29/2013 | CN102146493B Method for smelting clean steel in electromagnetic induction furnace by blowing CO2 |
| 05/29/2013 | CN102107265B Ladle covering flux and use method thereof |
| 05/29/2013 | CN102102138B Method for solving problem of copper segregation in steel |
| 05/29/2013 | CN101831523B Molten steel ladle external dephosphorizing method |
| 05/22/2013 | CN202945268U Installing and regulating device of RH (Ruhstahl-Hausen) vacuum chamber |
| 05/22/2013 | CN202945267U Novel RH (Relative Humidity) vacuum inserting pipe |
| 05/22/2013 | CN202945266U Composite calcium metal cored wire |
| 05/22/2013 | CN103119394A Steel ladle residual refractory material measurement method and device |
| 05/22/2013 | CN103114257A Acid-washing-free high-strength crossbeam steel with stable oxide layer and preparation method of steel |
| 05/22/2013 | CN103114256A Low-temperature-resistant guide impeller and production method thereof |
| 05/22/2013 | CN103114248A Steel for drilling tools and method for smelting steel for drilling tools |
| 05/22/2013 | CN103114244A Martensite stainless steel smelting process |
| 05/22/2013 | CN103114235A Core-spun thread for increasing N and V in molten steel and use method thereof |
| 05/22/2013 | CN103114179A Insertion tube of vacuum cycle degassing refining furnace and preparation method thereof |