| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 08/15/2012 | CN102634628A Optimization method for producing low-oxygen steel by converter |
| 08/15/2012 | CN102212737B Core-spun thread and method for implementing molten steel vanadium-nitrogen alloying |
| 08/09/2012 | WO2012104306A1 Process for producing high strength steel, and to a steel produced thereby |
| 08/09/2012 | DE112009004415T5 Vorrichtung zum Einblasen von Gas in ein Gefäß An apparatus for injecting gas into a vessel |
| 08/08/2012 | EP1852514B1 Method for producing extremely low carbon steel sheet and extremely low carbon cast piece having excellent surface characteristics, workability and formability |
| 08/08/2012 | CN202369608U Insertion tube of RH vacuum refining furnace |
| 08/08/2012 | CN202369607U Three-electrode direct current steel ladle refining furnace |
| 08/08/2012 | CN202369606U Ladle refining furnace with rotary platform |
| 08/08/2012 | CN202369605U Multi-station flue gas catching cover of argon oxygen decarburization (AOD) furnace |
| 08/08/2012 | CN202369604U Steel core aluminum complex deoxidizer for steel production |
| 08/08/2012 | CN202369603U Low nitrogen titanium iron core-spun yarn |
| 08/08/2012 | CN202369602U Power supply and control device for steel ladle refining furnace |
| 08/08/2012 | CN102628094A Buried oxygen blowing and decarburization process for electric-arc furnace steelmaking and control method |
| 08/08/2012 | CN102628093A Iron and steel tempering and purifying system |
| 08/08/2012 | CN102061351B Method for producing low-carbon steel and ultra-low-carbon steel by VD, LF and VD processes |
| 08/08/2012 | CN102002633B Carbon steel and manufacturing method thereof |
| 08/07/2012 | US8237010 Method of manufacturing a dressing |
| 08/02/2012 | US20120193844 Ladle metallurgy furnace having improved roof |
| 08/01/2012 | EP2482019A1 Burning lance holder for holding a burning lance by means of a handling device |
| 08/01/2012 | CN202359151U Desulfuration and slagging-off nitrogen blowing device for ladle |
| 08/01/2012 | CN202359150U Split air brick mechanism with steel leakage prevention function |
| 08/01/2012 | CN202359141U Gas protection device for reducing nitrogen absorption of molten steel |
| 08/01/2012 | CN102618795A Smelting process of nitrogenous high alloy heat-resistant steel ZG3Cr24Ni7N |
| 08/01/2012 | CN102618781A Hot-rolled H-steel for low temperature-resistance structure and preparation method for hot-rolled H-steel |
| 08/01/2012 | CN102618775A Alkaline earth-rare earth composite iron alloy and preparation method thereof |
| 08/01/2012 | CN102618698A Converter furnace steel-making desulfurizing agent and preparation method thereof |
| 08/01/2012 | CN102618697A Magnesium-based desulphuration method of molten iron outside furnace |
| 08/01/2012 | CN102618696A Composite calcium metal wire cored wire for steelmaking deoxygenation and production method thereof |
| 08/01/2012 | CN102618695A Deoxidizing agent for steelmaking of electric converter and preparation method thereof |
| 08/01/2012 | CN102618694A Refining heat insulation covering agent and preparation method thereof |
| 08/01/2012 | CN102618690A Blowing dephosphorization and protection process for converter |
| 08/01/2012 | CN102134629B Smelting method for low-silicon ultralow-sulphur steel |
| 08/01/2012 | CN101522922B Ladle steel deoxidation method |
| 07/31/2012 | CA2467310C Combined ironmaking and steelmaking plant |
| 07/26/2012 | WO2012099119A1 Steel material having superior toughness of welded heat-affected zone, and method for manufacturing same |
| 07/25/2012 | CN202347048U Movable top lance device |
| 07/25/2012 | CN202347047U RH furnace high-position water supplying tank optimizing device |
| 07/25/2012 | CN102605239A Low sulfur steel and production method thereof |
| 07/25/2012 | CN102605231A Method for smelting niobium steel and vanadium steel |
| 07/25/2012 | CN102605144A Steelmaking refining agent and preparation method of steelmaking refining agent |
| 07/25/2012 | CN102605143A Aluminum-magnesium-calcium alloy and application thereof in controlling stainless steel impurities |
| 07/25/2012 | CN102605142A Method of auto-setting calculation for proportional coefficient of electrode regulator of ladle refining furnace |
| 07/25/2012 | CN102605141A Improved Ruhrstahl Heraeus(RH) refining device |
| 07/25/2012 | CN102605140A Manufacturing method of molybdenum or vanadium oxide briquetting for steelmaking alloying |
| 07/25/2012 | CN102051529B Carbon steel and preparation method thereof |
| 07/25/2012 | CN102010937B Ladle furnace refining stirring process for preventing large quantity of slags from lumping by weak bottom blowing |
| 07/25/2012 | CN101956132B Steel having excellent toughness in welding heat affected zone, and manufacturing method thereof |
| 07/25/2012 | CN101906512B Spray gun for desulfuration of single-spray particle magnesium molten iron |
| 07/25/2012 | CN101892354B Full combustion smoke gas excess heat reclaiming system of argon oxygen decarburization converter |
| 07/25/2012 | CN101787489B Easy-welding low-carbon bainitic steel and manufacturing method thereof |
| 07/19/2012 | WO2012094705A1 Method of desulfurizing steel |
| 07/19/2012 | DE102011008691A1 Agent, useful e.g. to treat metal melts, preferably for desulfurization of pig iron melts, comprises an element, in elemental and/or bonded state, comprising alkali metal, alkaline earth metal or earth metal (first Component) and bitumens |
| 07/19/2012 | DE102011008690A1 Agent, useful for desulfurizing and/or dephosphorizing crude iron melt, comprises calcium oxide, optionally additional calcium-, magnesium-, or alkali-containing component and mineral and/or paraffinic oil |
| 07/19/2012 | CA2829030A1 Agent for treating molten metals, method for the production and use thereof |
| 07/18/2012 | CN202337795U 真空吹氧脱碳炉的真空泵装置 Vacuum oxygen decarburization furnace vacuum pump unit |
| 07/18/2012 | CN102591285A Universal automatic control system for AOD (Argon Oxygen Decarburization) and top-bottom combined blown furnace |
| 07/18/2012 | CN102586685A Smelting process of steel for high-titanium alloy welding wire |
| 07/18/2012 | CN102586673A Method for improving DWTT (drop weight tear test) index of X70 pipeline steel |
| 07/18/2012 | CN102586645A Smelting method for silicon calcium alloy |
| 07/18/2012 | CN102586547A Production method for low-cost clean steel |
| 07/18/2012 | CN102586546A Process for preparing low-carbon low-silicon-aluminium killed steel |
| 07/18/2012 | CN102586545A Flow control method for powder blowing in molten iron dephosphorization pretreatment process |
| 07/18/2012 | CN102586544A High-calcium pre-molten slag modification aluminium slag ball and preparation method thereof |
| 07/18/2012 | CN102586543A Steel ladle slag reducing agent with high calcium oxide content, and preparation method thereof |
| 07/18/2012 | CN102586542A Metal calcium core composite cored wire and preparation method thereof |
| 07/18/2012 | CN102191357B Method and improved device for argonoxygen refining of low-carbon ferrochrome |
| 07/18/2012 | CN102168162B Air cyclone cooling type wire feeding gun |
| 07/18/2012 | CN102061360B Method for lowering installation height of Ruhstahl Hausen (RH) vacuum processing device under low rail surface elevation condition |
| 07/18/2012 | CN102021272B Method for controlling content of nitrogen for stainless steel smelting |
| 07/18/2012 | CN101993987B Method for producing extremely thick steel plate with low alloy and high intensity by continuously casting plate blank |
| 07/18/2012 | CN101979188B Method for building bottom of molten steel tank |
| 07/18/2012 | CN101948984B Steel plate for heavy-duty generator and manufacturing method thereof |
| 07/18/2012 | CN101948979B Method for producing industrial pure iron |
| 07/18/2012 | CN101942597B Production method of gear steel |
| 07/18/2012 | CN101654765B Gap-free hot-rolled steel strip |
| 07/17/2012 | US8221677 Wire injection lance nozzle insert |
| 07/17/2012 | US8221521 Method of degassing molten metal |
| 07/12/2012 | CA2773024A1 Flexible minimum energy utilization electric arc furnace system and processes for making steel products |
| 07/11/2012 | EP2123784B1 Si KILLED STEEL WIRE MATERIAL HAVING EXCELLENT FATIGUE PROPERTY AND SPRING |
| 07/11/2012 | CN202322906U Steel ladle bottom argon blowing gas supply device |
| 07/11/2012 | CN202322905U 脱硫喷吹装置 Desulfurization blowing device |
| 07/11/2012 | CN202322904U Lf精炼炉专用钢包车 Lf refining furnace for steel car |
| 07/11/2012 | CN202317004U 扒渣机托辊更换支架 Cinder machine roller replacement bracket |
| 07/11/2012 | CN202316996U 一种透气芯 A venting core |
| 07/11/2012 | CN102575309A Degassing of martensitic stainless steel before remelting beneath a layer of slag |
| 07/11/2012 | CN102575308A Process for producing an ultra-low-carbon steel slab, strip or sheet |
| 07/11/2012 | CN102564156A Production method capable of prolonging service life of KR (Krypton) stirrer |
| 07/11/2012 | CN102560285A Soft austenitic stainless steel and preparation method thereof |
| 07/11/2012 | CN102560277A Preparation method of steel bar with corrosion resistance used for natural gas transportation pipeline |
| 07/11/2012 | CN102560252A Steel for medium-carbon Cr alloying connecting rod and manufacturing method of steel |
| 07/11/2012 | CN102560247A Excellent-performance medium plate high-input-energy steel and smelting method thereof |
| 07/11/2012 | CN102560131A Premelted refining slag and preparation method thereof |
| 07/11/2012 | CN102560010A Dip pipe for RH refining furnace |
| 07/11/2012 | CN102560009A RH vacuum refining bottom blowing powder injection device |
| 07/11/2012 | CN102560008A Submerged arc slag for refining aluminum-containing low-silicon steel ladle and preparation method for submerged arc slag |
| 07/11/2012 | CN102560007A Technology for removing titanium of molten iron through molten iron dephosphorization station |
| 07/11/2012 | CN102560006A Utilization method of ferrovanadium slag and premelted refining slag |
| 07/11/2012 | CN102560005A Treatment method for determining molten steel tilting effect of ladle refining furnace |
| 07/11/2012 | CN102560004A Ladle gas stirring method and stirring gas control device |
| 07/11/2012 | CN102560003A Method for preventing nitrogen increase of molten steel in LF (Ladle Furnace) refining process by top-blowing argon gas |