| Patents for C21C 7 - Treating molten ferrous alloys, e.g. steel, not covered by groups (11,430) |
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| 08/29/2007 | CN101024860A Steel-smelting core-wound wire and preparing method |
| 08/29/2007 | CN100334245C Smelting production method of extra pure high carbon chromium bearing steel |
| 08/29/2007 | CN100334234C Vacuum powder-spraying desulfurizing powder |
| 08/29/2007 | CN100334233C Method for controlling dusting speed of molten iron pretreatment |
| 08/29/2007 | CN100334232C Steel smelting process of core bar for rolling seamless steel pipe |
| 08/23/2007 | US20070193412 Method of making steel |
| 08/22/2007 | CN1333098C Iron base rare earth high chromium steel impellor blade |
| 08/22/2007 | CN101020986A N80 level petroleum pipe produced with micro alloyed medium carbon steel and its production process |
| 08/22/2007 | CN101020984A Method of controlling carbon content in ultralow carbon high strength high toughness steel |
| 08/22/2007 | CN101020943A Phosphorus reducing method for process of smelting Ni-Cr pig iron with nickel oxide ore |
| 08/22/2007 | CN101020942A Molten steel deoxygenating agent and its prepn |
| 08/22/2007 | CN101020941A Molten iron pre-treating method and apparatus |
| 08/22/2007 | CN101020940A Process of deoxygenating, desulfurizing and controlling non-metal inclusion content in steel |
| 08/21/2007 | US7258832 Device for treatment of iron alloys in vessel |
| 08/16/2007 | WO2007091700A1 Method of denitrifying molten steel |
| 08/15/2007 | EP1818420A1 Grain-oriented electromagnetic steel sheet and process for producing the same |
| 08/15/2007 | CN2934252Y New type bottom single-spray granulated magnesium desulfurization ejection gun |
| 08/15/2007 | CN1332042C Aluminium-rare-earth core-spun yarn |
| 08/15/2007 | CN1332041C Water-repellancy high-alkalinity steel-making out-furnace refining slag production method |
| 08/15/2007 | CN101016605A 21-4N gas valve steel containing rare-earth element and rare earth adding method |
| 08/15/2007 | CN101016603A High-boron cast steel containing granular boride and preparing method thereof |
| 08/15/2007 | CN101016600A C-Mn-Ti-Nb series hot-rolled high strength high magnetic induction performance steel and manufacturing method thereof |
| 08/15/2007 | CN101016599A Low carbon equivalent micro-alloy steel pipe and on-line normalizing process thereof |
| 08/15/2007 | CN101016597A Process of producing iron alloy with low carbon and chromium |
| 08/15/2007 | CN101016596A Process of producing iron alloy with low carbon and manganese |
| 08/15/2007 | CN101016578A Molten steel purifying slag agent produced by blast furnace fusion method |
| 08/15/2007 | CN101016577A Passivation composite desulfurization powder |
| 08/14/2007 | US7255828 Electromagnetic method and apparatus for treatment of engineering materials, products, and related processes |
| 08/09/2007 | WO2007088285A1 Method of controlling the flow of adjuvant for the casting of a molten metal |
| 08/09/2007 | US20070180955 Recovery of steel from contaminated scrap |
| 08/08/2007 | CN101012525A Method for producing low-oxygen high-carbon and high-chromium bearing steel by revolving furnace continuous casting technology |
| 08/08/2007 | CN101012489A Pre-melting buried arc composite refining slag and method for making same |
| 08/08/2007 | CN101012488A Conical bubble brick |
| 08/07/2007 | US7252793 Composition of matter tailoring: system I |
| 08/02/2007 | DE10215828B4 Verfahren und Einrichtung zum Erzeugen von nichtrostendem Stahl, insbesondere von chrom- oder chromnickelhaltigem Edelstahl Method and apparatus for producing stainless steel, particularly of chrome or stainless steel chromnickelhaltigem |
| 08/01/2007 | EP1812607A2 Cored wire |
| 08/01/2007 | CN2928862Y Slag skimmer |
| 08/01/2007 | CN101008068A Pipeline steel and its ingredient control method |
| 08/01/2007 | CN101008042A Novel ore-base inoculant and its production process |
| 08/01/2007 | CN101008041A Welding-free high temperature-resistant coating oxygen blowpipe |
| 07/31/2007 | US7250071 Method of manufacturing austenitic stainless steel having less susceptibility to cracking during forming |
| 07/31/2007 | CA2454952C High-alumina raw material and process of producing |
| 07/31/2007 | CA2169499C Device and method for the automatic coupling of a teeming ladle to one or more gas pipes |
| 07/25/2007 | CN2926250Y Apparatus for preventing melt from leaking out of air-permeating refractory material |
| 07/25/2007 | CN2926249Y Steel-water deoxidant throwing shell |
| 07/25/2007 | CN2926248Y Deoxidant and alloy-material pipe |
| 07/25/2007 | CN1328394C Compound coate with with powder core and its making process |
| 07/25/2007 | CN1328393C Coated wire with flexible coating |
| 07/25/2007 | CN101003879A Hot rolled steel in C-Mn-Ti series with high intensity magnetic induction performance |
| 07/25/2007 | CN101003846A Levelling equipment for vacuum chamber |
| 07/25/2007 | CN101003844A Slag forming element in use for refining molten steel, production method, and slagging method |
| 07/24/2007 | US7247211 Method of manufacture of ultra-low carbon steel |
| 07/19/2007 | DE202007005192U1 Rotor für die Spülgasbehandlung von Metallschmelzen Rotor for gas purging of molten metal |
| 07/18/2007 | CN2923725Y Novel KR desulfurizing agitator |
| 07/18/2007 | CN1327010C Composite iron ball for steel smelting and its production process |
| 07/18/2007 | CN1327007C Al-Mg-Ca-Fe alloy contg. micro-carbon, low silicon, low phosphorous, low-sulphur used for steelmaking |
| 07/18/2007 | CN1327006C Method of smelting high nitrogen steel using additional cathode glow discharging |
| 07/18/2007 | CN100999804A Novel high carbon high wolfram fast steel rolling roller and preparation process thereof |
| 07/18/2007 | CN100999803A High boron wear-resisting casting steel and preparation process thereof |
| 07/18/2007 | CN100999801A Anti-heat wear-resisting lubricating reducing wear alloy casting steel material |
| 07/18/2007 | CN100999774A Furnace dephosphorus rod agent for electric furnace molten steel |
| 07/18/2007 | CN100999773A Rotating steel ladle refining furnace |
| 07/18/2007 | CN100999772A Strengthening, increasing temp., sulphur and phosphorus removing composite powder spraying agent for interal cupola iron melt |
| 07/18/2007 | CN100999770A Production tech. of low carbon low silicon aluminium killed steel |
| 07/18/2007 | CN100999400A Synthotic fluospar |
| 07/11/2007 | CN1995430A Method for improving steel plate low temperature tenacity and strain ageing low temperature tenacity |
| 07/11/2007 | CN1995429A Nickel-free E grade steel smelting method |
| 07/11/2007 | CN1995428A Aluminium calcium ferro-silicon alloy |
| 07/11/2007 | CN1995407A Trace carbon Al-Mn-Fe alloy and its preparing process |
| 07/11/2007 | CN1995406A Method for smelting suprelow carbon steel using ordinary arc furnace |
| 07/11/2007 | CN1995404A Mono-slag converter process for producing high carbon low-phosphorus molten steel |
| 07/11/2007 | CN1995403A Double-slag converter process for producing high carbon low-phosphorus molten steel |
| 07/11/2007 | CN1325664C Insert tube of vacuum circulating degasification apparatus |
| 07/11/2007 | CN1325663C 净化剂 Scavenger |
| 07/05/2007 | WO2007074993A1 Degassing apparatus having duplex vacuum vessel |
| 07/05/2007 | US20070152386 Refining method and refining apparatus for chromium-contained molten steel |
| 07/04/2007 | CN1990137A Technique for preventing surface crack of continuous casting steel billet for petroleum casing |
| 07/04/2007 | CN1324156C Refining ferroalloys |
| 07/04/2007 | CN1324150C Slag from aluminum smelting for making clean steel and method for preparing same |
| 07/03/2007 | US7238297 Composition of matter tailoring: system I |
| 06/28/2007 | WO2007021207A9 Snorkels for vacuum degassing of steel |
| 06/28/2007 | US20070144306 Steel desulphurating agent and use thereof in the desulphuration of steel |
| 06/27/2007 | EP1799869A2 Method for controlling a molten metal bath bubbling in a metallurgical vessel and a device for carrying out said method |
| 06/27/2007 | CN1989263A Steel for steel pipes |
| 06/27/2007 | CN1986840A Molten steel desulfurizing process of bottom blowing superfine magnesium powder |
| 06/27/2007 | CN1986839A Process of producing high quality carbon steel ingot with aluminium and RE added for high grade forging |
| 06/27/2007 | CN1986838A Steel making lime additive and its production process |
| 06/26/2007 | US7235210 Metal melting furnace |
| 06/21/2007 | US20070138713 Metal powder production apparatus |
| 06/21/2007 | US20070138712 Metal powder production apparatus |
| 06/21/2007 | US20070138711 Metal powder production apparatus |
| 06/21/2007 | DE102005060432A1 Spülkegel Flushing cones |
| 06/20/2007 | EP1257673B1 Method for grain refining of steel, grain refining alloy for steel and method for producing grain refining alloy |
| 06/20/2007 | CN1985012A Cored wire |
| 06/20/2007 | CN1982489A Production of III threading reinforcing bar |
| 06/19/2007 | US7232543 Power feeding method and apparatus |
| 06/14/2007 | DE102005058533A1 Method for treating melts, particularly of steel or iron, used to prepare directly castable melts in a single step, includes adding an alloy containing magnesium to form a buffer zone |
| 06/13/2007 | EP1794330A2 Feed apparatus and portable dust collector |
| 06/13/2007 | CN1979070A Special apparatus for light stone dregs removing agent |
| 06/13/2007 | CN1978690A Bainite steel rail with excellent anti-fatigue performance and its production method |