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
03/26/2014CN103667946A Tungsten-containing heat-resistant alloy steel lining board material and preparation method thereof
03/26/2014CN103667944A Pump super-wear-resistant high-hardness alloy steel material and preparation method thereof
03/26/2014CN103667943A Scandium-containing wear-resistant low-carbon steel material for pump impellers and preparation method thereof
03/26/2014CN103667940A Alloy steel material of thrust plate for plunger pump and preparation method of alloy steel material
03/26/2014CN103667937A Wear-resistant alloy steel material for valve bodies and preparation method thereof
03/26/2014CN103667934A Low-carbon stainless steel material and preparation method thereof
03/26/2014CN103667930A Moisture-proof H2S-corrosion-resistant L555QS pipeline tube containing rare earth and production method of pipeline tube
03/26/2014CN103667929A Low-cost and H2S-corrosion-resistant L390NS pipeline tube containing rare earth and production method of pipeline tube
03/26/2014CN103667927A High-strength high-carbon steel material for pump bearings and preparation method thereof
03/26/2014CN103667926A Melting method of martensitic stainless steel
03/26/2014CN103667891A Alloy steel material of pump for delivering mixed acid liquid containing chloride radical, and preparation method thereof
03/26/2014CN103667875A Preparation method of low-carbon acid-resistant pipeline steel
03/26/2014CN103667853A Two-step method for smelting titanium-containing austenitic stainless steel
03/26/2014CN103667690A Chrome-molybdenum metal self reduction pellet and preparation and direct steel liquid alloying methods thereof
03/26/2014CN103667604A Feeding mechanism for vacuum degassing furnace
03/26/2014CN103667603A Coarse vacuum dehydrogenation method
03/26/2014CN103667602A Method for increasing nitrogen for RH refined molten steel of grain-oriented electrical steel
03/26/2014CN103667601A Cross track layout structure of buggy ladle and spray repair vehicle
03/26/2014CN103667600A Smelting method of martensite steel for air valve of internal combustion engine
03/26/2014CN103667599A Environment-friendly molten steel refining fluxing slag
03/26/2014CN103667598A Austenitic stainless steel single slag smelting method
03/26/2014CN103667597A Method for realizing H content of austenitic stainless steel less than 2 PPM
03/26/2014CN103667596A High-thermal-shock-resistant desulfurization device
03/26/2014CN103667595A High-efficiency high-phosphorus molten iron dephosphorizing method used in molten iron mixing process
03/26/2014CN103667594A Two-step stainless steel desulfurization method
03/26/2014CN103667593A Rolling method for manganese steel
03/26/2014CN103667592A Method used for realizing dispersion uniform distribution of bismuth element in alloy steel containing bismuth
03/26/2014CN103667589A Two-step method for producing austenitic stainless steel by using stainless steel scrap
03/26/2014CN103667587A Smelting method of austenite steel for engine air valve
03/26/2014CN103667581A Low-nitrogen SWR82B steel smelting method
03/26/2014CN103658580A Alloy pipe production process
03/26/2014CN102690924B Method for controlling nitrogen content of ultra-low-carbon steel
03/26/2014CN102660711B Steel for petroleum casing connecting piece and manufacturing method thereof
03/26/2014CN102344994B Desulfurization spray gun
03/26/2014CN102242315B Oxide metallurgy method for refining structure of wheel steel
03/25/2014US8679373 Composition of matter tailoring: system I
03/19/2014CN203487173U Multifunctional molten iron desulphurization system
03/19/2014CN103643175A Alloy steel material for valve core and preparation method thereof
03/19/2014CN103643174A Antimony scandium-containing high-hardness alloy steel material for bearings and preparation method thereof
03/19/2014CN103643165A Erbium-containing pump shaft alloy steel material and preparation method thereof
03/19/2014CN103643163A Alloy steel material for cobblestone crusher hammerhead and preparation method thereof
03/19/2014CN103643162A Alloy steel material for hammerhead of pendulum for mine and preparation method thereof
03/19/2014CN103643157A Copper-contained ferritic stainless steel coil and manufacturing method thereof
03/19/2014CN103643139A Alloy steel material for water pump bearings and preparation method thereof
03/19/2014CN103643138A Low-carbon manganese steel material for pump shafts and preparation method thereof
03/19/2014CN103643137A Alloy steel material for large-scale pump bearings and preparation method thereof
03/19/2014CN103643134A Boride-particle-reinforced Fe-B-C alloy and preparation method thereof
03/19/2014CN103643132A High speed steel material for large-scale pump bearings and preparation method thereof
03/19/2014CN103643128A High speed steel material for high temperature pump bearings and preparation method thereof
03/19/2014CN103643117A Ultra-low aluminum steel and smelting method thereof
03/19/2014CN103643113A Tungsten dysprosium-containing manganese steel material for bearings and preparation method thereof
03/19/2014CN103643112A Alloy material for high temperature-resistant mine hammerhead and preparation method thereof
03/19/2014CN103643111A Easy-to-process stainless steel material for pump valves and preparation method thereof
03/19/2014CN103643104A Rolling method of chrome steel
03/19/2014CN103643057A Smelting method of medium-carbon ferromanganese
03/19/2014CN103642992A Slag forming constituent for steelmaking
03/19/2014CN103642991A Pre-melted slag for refining ultra-low aluminum steel and preparation method and using method thereof
03/19/2014CN103642990A Molten steel dearsenication fluxing agent, and preparation method and application method thereof
03/19/2014CN103642989A Steel liquid purification agent
03/19/2014CN103642988A Method for molten steel refining by corundum slag
03/19/2014CN103642987A Degassing unit for smelting furnace
03/19/2014CN103642986A Composite desulfurization blender of double-blade molten iron
03/19/2014CN103642985A Control device of molten iron desulfurization spray lance
03/19/2014CN103642984A Cyclonic side-escaping type desulphurization spraying gun
03/19/2014CN103642983A Molten metal stirrer
03/19/2014CN103642982A Side-spraying-type molten iron desulphurization device
03/19/2014CN103642981A Automatic control device for desulfurization of molten iron
03/19/2014CN103642980A Refining agent for steel-making
03/19/2014CN103642979A Using method of silicon-aluminum alloy
03/19/2014CN103642978A Method for smelting nickel-containing steel in short process by utilizing electric furnace
03/19/2014CN103642976A H13 steel smelting process
03/19/2014CN103642970A Smelting method of low-carbon aluminum killed steel
03/19/2014CN103642969A Resulfurization control method in process of smelting electric steel from vanadium/titanium-containing molten iron
03/19/2014CN103642967A Method for producing high-chromium steel by converter
03/19/2014CN103642966A Method for improving high-carbon high-manganese steel converter smelting endpoint carbon content and steelmaking method
03/19/2014CN103639368A Casting method for large-size electric driving ship propeller bracket casting piece
03/19/2014CN102796948B Non-oriented electrical steel plate with extremely low content of Ti and smelting method for non-oriented electrical steel plate
03/19/2014CN102796849B Device for automatically performing temperature measurement and sampling on molten steel under vacuum state
03/19/2014CN101443463B Steel for forging, process for producing the same, and forged article
03/13/2014US20140069235 Method of refining molten iron
03/12/2014CN203474837U Novel lance head structure of multi-function top lance
03/12/2014CN203474836U RH refining furnace dip pipe for preventing nitrogen from being added into molten steel
03/12/2014CN103628001A Alloy steel material for corrosion-resistant pump valve and preparation method thereof
03/12/2014CN103628000A Alloy steel material for tungsten-containing mine hammerhead and preparation method thereof
03/12/2014CN103627999A Medium-manganese steel hammerhead material for mines and preparation method thereof
03/12/2014CN103627997A High-tungsten high-carbon steel hammerhead material and preparation method thereof
03/12/2014CN103627989A Alloy steel material for mine crusher hammerhead and preparation method thereof
03/12/2014CN103627987A Magnetic corrosion-resistant alloy steel material for hammerheads and preparation method thereof
03/12/2014CN103627986A Alloy steel material for sand maker hammerhead and preparation method thereof
03/12/2014CN103627977A Alloy steel material for comb-tooth crusher hammerhead and preparation method thereof
03/12/2014CN103627973A Production method for low-carbon high-chromium steel
03/12/2014CN103627971A Alloy structural steel for large-specification soldering tools and smelting method thereof
03/12/2014CN103627968A High-strength alloy steel lining plate material and preparation method thereof
03/12/2014CN103627967A Wear-resistant alloy steel material for pump casing and preparation method thereof
03/12/2014CN103627965A High-hardness alloy steel hammerhead material and preparation method thereof
03/12/2014CN103627964A High-initial-hardness alloy steel material for crusher hammer and preparation method thereof
03/12/2014CN103627959A Heat-resistant alloy steel liner plate material and preparation method thereof
03/12/2014CN103627901A Nickel-copper containing silicon-based iron alloy for steelmaking and preparation method thereof
03/12/2014CN103627853A Method for manufacturing low-carbon and low-silicon steel
03/12/2014CN103627852A Heat-preserving agent for molten iron and smelting method of vanadium-titanium-bearing iron ores
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