Patents
Sitemap › C21 - Metallurgy of iron › C21C - Processing of pig-iron, e.g. refining, manufacture of wrought-iron or steel; Treatment in molten state of ferrous alloys › 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)
03/2014
03/12/2014CN103627851A Semisteel steelmaking temperature control method and semisteel steelmaking method
03/12/2014CN103627850A Desulphurization slag modifier for molten iron containing vanadium and titanium, preparation method of desulphurization slag modifier and desulphurization slag modifying method
03/12/2014CN103627849A Method for improving recovery rate of titanium from molten steel
03/12/2014CN103627848A Smelting method of steel high-pressure valve body
03/12/2014CN103627847A Lanthanum-cerium mixed rare earth ferroalloy for rare earth steel production
03/12/2014CN103627843A Slagging method in semisteel steelmaking and semisteel steelmaking method
03/12/2014CN103627841A Control method for nitrogen content of molten steel of wear-resistant steel
03/12/2014CN103627838A Method for reducing drossing iron loss for desulphurization of molten iron containing vanadium and titanium
03/12/2014CN102899457B Method for preventing top lance of vacuum cycle degassing furnace from falling
03/12/2014CN102851450B Method for preventing desulfurization splashing of molten iron
03/12/2014CN102758059B Silicon-barium-potassium system deoxidier for steelmaking and preparation method thereof
03/12/2014CN102758055B Calcium-silicon molten steel external refining agent and preparation method thereof
03/12/2014CN102758054B Calcium-aluminium-silicon molten steel external refining agent and preparation method thereof
03/12/2014CN102712960B Operation method for mechanically stirring chrome-containing molten iron
03/12/2014CN102703644B Method for producing low-carbon high-chrome alloy steel
03/12/2014CN102634726B Manufacturing method of agitating arm of agitator
03/12/2014CN102618694B Refining heat insulation covering agent and preparation method thereof
03/12/2014CN102534416B Steel for freight train connecting piece and preparation method thereof
03/12/2014CN102399939B Premelted slag for unpolluted deoxidization with externally applied voltage between metal and slag and preparation method thereof
03/12/2014CN102051441B Quick refining process for LF (ladle furnace)
03/12/2014CN102006950B Method for manufacturing continuous casting of steel and method for continuous casting of steel using same
03/05/2014CN203462078U Five-stage vacuum pump configuration structure
03/05/2014CN203462077U Clutch type vacuum alloy feeding mechanism
03/05/2014CN203462076U Upper layer double-ring masonry structure of ruhstahl hausen (RH) circulating tube
03/05/2014CN103614667A Production method of alloy steel roller
03/05/2014CN103614660A High-yield-strength alloy steel material used for pump valves and preparation method of the alloy steel material
03/05/2014CN103614656A High-vanadium alloy steel material used for bearings and preparation method thereof
03/05/2014CN103614654A Alloy steel material used for engine shield and preparation method of the alloy steel material
03/05/2014CN103614648A Wear-resistant alloy cast steel material used for pump valves resistant to severe environments and preparation method of the material
03/05/2014CN103614646A Alloy steel material used for concrete pump conveyer pipes and preparation method of the alloy steel material
03/05/2014CN103614645A Cold-brittleness resistant alloy steel material used for pump trucks and preparation method of the material
03/05/2014CN103614639A Corrosion-resistant wear-resistant alloy steel material used for pump trucks and preparation method of the material
03/05/2014CN103614609A Molten iron desilication method for stainless steel smelting
03/05/2014CN103614608A Production method of Q460C-grade high-strength steel
03/05/2014CN103614564A Method for continuously smelting vanadium-containing ferrophosphorous
03/05/2014CN103614518A Novel multifunction top lance head
03/05/2014CN103614517A Low-cost deoxygenation method for low-aluminum medium-carbon steel
03/05/2014CN103614516A Compounded deoxidized material as well as preparation method and application thereof
03/05/2014CN103614515A Slagging method of resource-saving environmentally-friendly composite slagging balls
03/05/2014CN103614514A Nitridation technique of supersupercritical high-pressure boiler tube billet steel
03/05/2014CN103614513A Calcium treatment method under special steelmaking process
03/05/2014CN103613392A Refractory lining material for RH (Ruhrstahl-Hausen) vacuum furnace, preparation method of refractory material and RH vacuum furnace
03/05/2014CN103611892A Smelting pouring method for vacuum carbon deoxidized fine-grained steel
03/05/2014CN102808062B Method for controlling A segregation of steel ingots by purification of molten steel
02/2014
02/27/2014WO2014030618A1 Thick steel plate having good ultralow-temperature toughness
02/27/2014WO2014029325A1 Straight barrel type vacuum refining device and method for use the same
02/26/2014CN203451562U Tilting buffering protection device of AOD (Argon Oxygen Decarburization) refining furnace
02/26/2014CN103608472A Secondary refining equipment and secondary refining method for molten steel
02/26/2014CN103602928A Wear-resistant alloy steel liner plate material with high strength, and preparation method thereof
02/26/2014CN103602921A Method for preparing cold-work die steel
02/26/2014CN103602890A High-hole-expansion-ratio steel plate with tensile strength of 540 MPa and manufacturing process thereof
02/26/2014CN103602882A Pouring molten iron and smelting process of natural gas powered cylinder
02/26/2014CN103602787A Refining ladle on-line argon adjustment method
02/26/2014CN103602786A Preparation method of slit air brick
02/26/2014CN103602785A Economical efficient aluminum-free deoxidation method for high-speed heavy-rail steel
02/26/2014CN103602784A Method for deoxidizing in RH (Relative Humidity) vacuum furnace
02/26/2014CN103602783A Method of controlling edge crack of boracic low alloy steel
02/26/2014CN103602782A Method for removing nonmetallic inclusions in molten steel by means of supergravity
02/26/2014CN103602775A Method for effectively controlling generation of central cracks in medium-carbon steel plate
02/26/2014CN103600041A Casting method of high-strength high-hardness anti-marine-corrosion non-magnetic steel
02/19/2014CN203440401U Vacuum refining furnace long-life alloy blanking opening
02/19/2014CN203440400U Amorphous base metal smelting device
02/19/2014CN203440399U RH (Ruhrstal Heraeus) chromium-free high-performance mass-impregnation tube
02/19/2014CN203440398U RH (Ruhrstal Heraeus) chromium-free mass-impregnation tube
02/19/2014CN203440397U KR (knotted reactor) desulphurization dust removal device
02/19/2014CN203438382U Die used for manufacturing RH total immersion pipe
02/19/2014CN103589957A CrMnTi series gear steel production method
02/19/2014CN103589952A Rare earth alloying TRIP steel
02/19/2014CN103589951A Large section H shaped steel and its production method
02/19/2014CN103589940A Casting method of thin-wall nodular cast iron
02/19/2014CN103589937A Low-carbon low-alloy high-strength steel refining technology
02/19/2014CN103589827A Refining technology of special steel for fan shaft
02/19/2014CN103589826A Molten iron slag collecting agent and preparation method thereof
02/19/2014CN103589825A Argon-sealed funneled brick
02/19/2014CN103589824A Sulfur and phosphor removing stoking material for cupola furnaces
02/19/2014CN103589823A Integrated ladle refining equipment and steel-making method using the same
02/19/2014CN103589820A Composite dephosphorization material
02/19/2014CN102766728B Method and device for real-time prediction of sulfur content of molten steel in refining process of ladle refining furnace
02/18/2014US8652397 Ultrasonic device with integrated gas delivery system
02/12/2014EP2695953A1 Method for adding zinc to molten steel and process for producing zinc-containing steel
02/12/2014CN203429201U VOD (vacuum oxygen decarburization) furnace
02/12/2014CN203429200U VD (vacuum degassing) furnace
02/12/2014CN203429199U Composite brick core of bottom blowing air brick for ladle refining
02/12/2014CN203429198U Portable charging LF (ladle furnace)
02/12/2014CN203426392U System for improving cleanliness of molten steel and refining crystal grains through ultrasonic waves
02/12/2014CN103572006A Compact RH (Ruhrstahl and Hereaeus) refining process layout and production flow
02/12/2014CN103572005A Cooling device and cooling device for declining tube of RH refining furnace of steel mill
02/12/2014CN103572004A Complex RH decarburization method
02/12/2014CN103572003A Circulating tube for lower groove of vacuum refining furnace
02/12/2014CN103572002A Manufacturing method for RH furnace circulating pipe
02/12/2014CN103572001A Method for controlling alkalinity of ultra-low-sulfur steel LF (ladle furnace) slag
02/12/2014CN103572000A Low fluorine melting point lowering agent for chromium-containing hot metal smelting, and use methods thereof
02/12/2014CN103571999A Method for smelting nitrogen-controlling martensite stainless steel through total molten iron
02/12/2014CN103571998A Converter low-alkalinity residue high-efficiency dephosphorization method
02/12/2014CN103571997A Magnesium-based deoxidized alloy and steelmaking deoxidization method
02/12/2014CN103571996A Vanadium oxide core-spun yarn for smelting vanadium microalloyed steel to increase vanadium content
02/12/2014CN103571991A Cylinder liner blank casting deslagging method
02/12/2014CN103566719A Method for preparing raw material of desulfurizing agent by using waste chlorination molten salt generated in production of TiCl4
02/12/2014CN102794419B Fluorine-free sodium-free ladle covering agent
02/12/2014CN102639737B Steel material exhibiting excellent fatigue-crack progress resistance and corrosion resistance, and production method for same
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