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)
10/2010
10/13/2010CN101368225B Smelting method for vulcanization easy cutting plastic mold steel
10/13/2010CN101363101B Large thickness quenched high strength steel and production method thereof
10/13/2010CN101314805B High-efficiency dephosphorization smelting method for medium phosphor hot metal revolving furnace
10/13/2010CN101235428B Calcium silicon iron core-spun yarn core layer composition
10/13/2010CN101168817B Method for increasing nitrogen content of nitrogen-containing clean steel
10/06/2010CN201601495U 一种用于精炼炉的动态无功功率补偿装置 A method for refining furnace dynamic reactive power compensation device
10/06/2010CN201600012U 一种新型氧枪系统 A new oxygen lance systems
10/06/2010CN101851725A Alloy for improving shapes of carbides in nickel-hardened indefinite chilled cast iron and manufacturing method
10/06/2010CN101851723A Special Martensitic ductile iron wear-resistant medium suitable for mine
10/06/2010CN101851698A Cover mud-hanging device of refining furnace
10/06/2010CN101851697A Smelting method (step-by-step oxidation smelting method) for metallurgical product
10/06/2010CN101555540B Energy conservation production method for compound temperature reduction agent used in the steel production
10/06/2010CN101503749B Vacuum degasification system steam jet and last stage pressure air injection vacuum technology
10/06/2010CN101381791B Method for inhibiting pro-eutectoid ferrite precipitation in medium carbon hypoeutectoid steel hot-rolling microstructure
10/06/2010CN101319268B Technique for outside-stove refining dephosphorization
10/06/2010CN101319263B Composite sphere for manufacturing ultra-low phosphoretic steel with outside-stove refining dephosphorization and its manufacturing method
10/06/2010CN101240361B Core-spun yarn core layer composition
10/06/2010CN101096720B Desulfurising method for ultra-low-carbon steel outer-furnace refining desulfuration and desulfurizer
09/2010
09/30/2010US20100244339 Filter having multilayered structure for filtering impurity particles from molten metal
09/29/2010CN1836052B Method for producing high cleanness steel excellent in fatigue strength or cold workability
09/29/2010CN101845939A Petroleum casing pipe and method for manufacturing same
09/29/2010CN101845597A Low-cost 80-kilo grade super-thick quenched and tempered steel plate and production method thereof
09/29/2010CN101845587A Steel with yield ratio no larger than 0.8 for hot rolling U-shaped steel sheet pile and production method thereof
09/29/2010CN101845538A Method for controlling vigorous splash during smelting stainless steel in vacuum oxygen decarburization refining furnace
09/29/2010CN101845537A Method for participating in reduction and desulfurization process with AOD furnace-top oxygen gun
09/29/2010CN101845536A Composite molten steel slag washing agent based on LF (ladle furnace) refining waste slag and preparation method thereof
09/29/2010CN101845535A Method for improving nitrogen yield of ferrosilicon nitride
09/29/2010CN101845534A Method for increasing silicon in molten iron
09/29/2010CN101476021B Vacuum refining desulfurizer containing strontia
09/29/2010CN101413042B Slag-forming constituent and preparation thereof
09/29/2010CN101381792B Slag forming material of intermediate frequency induction furnace
09/22/2010CN201587974U Powdery alloy additive inclusion in steel smelting
09/22/2010CN101838776A High-strength and low-temperature tough steel
09/22/2010CN101838773A Steel for acid soil corrosion-resistant hot rolling U-shaped steel sheet pile and production method thereof
09/22/2010CN101838769A Steel for hot rolling U type steel sheet pile with tensile strength more than or equal to 600MPa and production method thereof
09/22/2010CN101838768A Low-temperature impact resistant steel for hot-rolling U-type steel sheet pile and production method thereof
09/22/2010CN101838720A Composite modification material for reducing oxidizability of molten low-carbon-aluminum killed steel
09/22/2010CN101838718A Medium frequency furnace internal dephosphorization and desulfurization smelting process
09/22/2010CN101838717A Rare earth Al-Ba-Ca-Fe alloy
09/22/2010CN101654760B Unalloyed structural steel S355J2 steel plate and production method thereof
09/22/2010CN101492758B Method for controlling non-metallic inclusion in pipeline steel
09/22/2010CN101476016B Stainless steel smelting method
09/22/2010CN101412183B Method for producing high-carbon chromium bearing steel by double retarded cooling process
09/22/2010CN101392309B Slag conglomeration agent for hot metal pretreatment of magnesium injection and deep desulphurization and use method thereof
09/22/2010CN101323896B Refined-smelting ladle furnace carbon control deep desulphurization method for ultra-low-carbon steel production
09/22/2010CN101111324B Wire for refining molten metal and associated method of manufacture
09/15/2010CN201581105U Smoke-gas collecting hood of molten iron sulphur removal station
09/15/2010CN101831598A Low alloy steel for resisting sulfuric acid dew point corrosion and production method thereof
09/15/2010CN101831588A Steel materials excellent in toughness in weldheat-affected zone and fatigue characteristics of base material, and manufacturing method of the same
09/15/2010CN101831585A High-strength steel for automotive wheels and manufacture method thereof
09/15/2010CN101831527A Production process for continuous casting anti-corrosion magnetically soft alloy bars with light sections
09/15/2010CN101831526A Method for processing super-thick plate
09/15/2010CN101831525A Dephosphorization method for molten iron
09/15/2010CN101831524A Desulfurization slag system of ultralow-sulfur raw steel and preparation and application methods thereof
09/15/2010CN101831523A Molten steel ladle external dephosphorizing device and dephosphorizing method thereof
09/15/2010CN101831522A Compound strengthening production method of high-strength steel wire rods for steel strands
09/15/2010CN101829889A Production process of austenitic stainless steel bar by short-process continuous casting and rolling
09/15/2010CN101586174B Steel two-slag purifying method for ultra-cleaning welding
09/15/2010CN101451213B Method for producing large thickness and high intensity steel plate for boiler drum
09/15/2010CN101445855B Boron-iron and iron-titanium composite cored wire and application thereof
09/15/2010CN101445854B Aluminium feeding chute device
09/15/2010CN101280389B Steel belt for spoke of vehicle wheel and manufacturing method thereof
09/15/2010CN101250609B Rear earth calsibar deoxidizer and preparation technique thereof
09/08/2010CN201574168U Vacuum treatment jacking system
09/08/2010CN101824580A Mandrel material
09/08/2010CN101824511A RH injection refining device and application thereof
09/08/2010CN101824510A Argon blowing method at bottom of steel ladle for continuously casting steel
09/08/2010CN101824509A Improvement on spray gun core structure for molten iron pretreatment
09/08/2010CN101824508A Slagging method for electrosmelting
09/08/2010CN101824506A Revolving furnace slag pressing agent and revolving furnace slag pressing method
09/08/2010CN101823197A Method for molding large ring piece by casting blank ring rolling
09/08/2010CN101586175B Low magnesium type molten iron/semisteel desulfurizing agent and preparation method thereof
09/08/2010CN101487069B Foam slag inhibitor for converter
09/08/2010CN101476017B Aluminum-calcium deoxidation and desulphurization slag remover for metallurgy
09/08/2010CN101457272B Two-step stainless steel smelting method
09/08/2010CN101392350B Extremely low yield point steel plate and production method thereof
09/08/2010CN101386950B Nickel iron intermediate alloy and melting and purification treatment method thereof
09/08/2010CN101343680B Metallurgy type refining slag special for ladle and manufacture method thereof
09/08/2010CN101343677B Process for manufacturing low-silicon low-carbon deep punching/drawing steel
09/08/2010CN101338396B Method for smelting very-low carbon and high silicon stainless steel by AOD
09/08/2010CN101333617B Stabilizing process for treating aluminium-silicon killed steel by sealed argon-blowing method
09/08/2010CN101319269B Technique for desulfurization in refining process
09/08/2010CN101307374B Process for removing nonmetal inclusion in molten steel
09/08/2010CN101135030B Weather-resistant hot rolled narrow steel strip and method for manufacturing same
09/01/2010CN201567347U Split-type steel-leakage preventing ladle ventilating seat brick
09/01/2010CN201567346U Desulfurization spray lance
09/01/2010CN1858282B Low S low Pb forgeable free cutting steel and its producing process
09/01/2010CN101818310A High-chromium, heat-resistant and wear-resistant weldable steel electric shock molten aluminium shell hammer of iron-based rare earth
09/01/2010CN101818309A Air bottle steel and manufacturing method thereof
09/01/2010CN101818304A Ultra-large linear energy input welding high-strength steel and production method thereof
09/01/2010CN101818232A Method for producing extra-low-carbon stainless steel by vacuum induction refining
09/01/2010CN101818231A Control method for preventing splash during refining ferrochromium alloy with argon oxygen
09/01/2010CN101818230A Manganese boron deoxidizer and using method thereof
09/01/2010CN101818229A Foamed dephosphorization pellet and preparation method thereof
09/01/2010CN101818226A Charge composition of synthetic cast iron and method for preparing cylinder head castings
09/01/2010CN101817689A Refractory castable for molten iron pretreatment spray gun
09/01/2010CN101596553B High speed steel roll collar applied to high speed wire rolling mill and manufacture method thereof
09/01/2010CN101487098B Tube blank for N80 steel pipe and method of manufacturing the same
09/01/2010CN101407891B Boron-containing semi-high speed steel cold roller and manufacturing method thereof
09/01/2010CN101338352B Cleaning mechanism for viscous slag in inner wall of desulfuring spray gun of gasification chamber
1 ... 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 ... 115