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    METHOD OF DESULFURIZING STEEL
    1.
    发明申请
    METHOD OF DESULFURIZING STEEL 有权
    钢的脱硫方法

    公开(公告)号：US20120180601A1

    公开(公告)日：2012-07-19

    申请号：US13106352

    申请日：2011-05-12

    申请人： Dhiren Panda ,  Neal Ross ,  Gary McQuillis ,  Jerome Jenkins

    发明人： Dhiren Panda ,  Neal Ross ,  Gary McQuillis ,  Jerome Jenkins

    IPC分类号： C21C1/02

    CPC分类号： C21C7/06 ,  C21C5/54 ,  C21C7/0645 ,  C21C7/076 ,  C21C7/10 ,  C21C2300/08 ,  Y02P10/216 ,  Y02P10/242

    摘要： A method of desulfurizing steel including steps of forming a slag over a molten metal, drawing a vacuum to less than 5 torr over the slag and molten metal, stirring the molten metal and slag, and deoxidizing and desulfurizing the molten metal and slag to degas the steel reducing at least sulfur, nitrogen, oxygen, and hydrogen contents, and reducing activity of oxygen in the molten metal to less than 30 ppm. The method includes forming a slag composition after degassing the steel comprising CaO between about 50 and 70% by weight, SiO2 between about 20 and 28% by weight, CaF2 between about 5 and 15% by weight, MgO not more than 8% by weight, Al2O3 not more than 1% by weight, and a combination of FeO+MnO not more than 2% by weight, where the sum of CaO+CaF2+SiO2+MgO is at least 85% by weight.

    摘要翻译： 一种脱硫钢的方法，包括在熔融金属上形成炉渣的步骤，在炉渣和熔融金属上抽真空至小于5托，搅拌熔融金属和炉渣，以及使熔融金属和炉渣脱气脱硫脱气 钢至少还原硫，氮，氧和氢含量，并将熔融金属中氧的活性降低到30ppm以下。 该方法包括在对包含约50-70重量％的CaO，约20-28重量％之间的SiO 2，约5-15重量％的CaF 2和不超过8重量％的MgO进行脱气之后， ，Al 2 O 3不超过1重量％，FeO + MnO的组合不超过2重量％，其中CaO + CaF 2 + SiO 2 + MgO的总和至少为85重量％。

    METHOD OF CONTINUOUSLY CASTING THIN STRIP
    2.
    发明申请
    METHOD OF CONTINUOUSLY CASTING THIN STRIP 审中-公开
    连续铸造薄条的方法

    公开(公告)号：US20120222831A1

    公开(公告)日：2012-09-06

    申请号：US13040863

    申请日：2011-03-04

    申请人： Dhiren Panda ,  Leigh Wooley ,  Neal Ross ,  Gary McQuillis ,  James D. Edwards

    发明人： Dhiren Panda ,  Leigh Wooley ,  Neal Ross ,  Gary McQuillis ,  James D. Edwards

    IPC分类号： B22D11/16

    CPC分类号： B22D11/0697 ,  B22D11/002

    摘要： A method of continuously casting steel including steps of forming a casting pool of molten steel comprising a carbon content of less than 0.5% by weight on casting surfaces of a pair of internally cooled casting rolls having a nip formed between them, counter rotating the casting surfaces of the casting rolls toward each other to produce a cast steel strip moving downwardly away from the nip between the casting rolls, guiding the cast strip through a first enclosure adjacent the casting rolls as the strip moves away from the casting rolls, the first enclosure having a reducing atmosphere containing carbon monoxide and optionally hydrogen of at least 0.1%, establishing the reducing atmosphere in the first enclosure to control ingress of atmospheric air so as to maintain said atmosphere with a CO to CO2 ratio of at least 1.5 during steady state operation.

    摘要翻译： 一种连续铸造钢的方法，包括在其间形成有辊隙的一对内部冷却的铸辊的铸造表面上形成含有小于0.5重量％的碳含量的钢水铸造池的步骤， 的铸造辊朝向彼此以产生从铸辊之间的辊隙向下移动的铸钢带，当铸钢带远离铸辊移动时，通过邻近铸辊的第一外壳引导铸钢带，第一外壳具有 含有至少0.1％的一氧化碳和任选的氢的还原气氛，在第一外壳中建立还原气氛以控制大气空气的进入，以便在稳态操作期间以CO至CO 2比保持至少1.5的CO气氛。

    Method of desulfurizing steel
    4.
    发明授权
    Method of desulfurizing steel 有权
    钢脱硫方法

    公开(公告)号：US08523977B2

    公开(公告)日：2013-09-03

    申请号：US13106352

    申请日：2011-05-12

    申请人： Dhiren Panda ,  Neal Ross ,  Gary McQuillis ,  Jerome Jenkins

    发明人： Dhiren Panda ,  Neal Ross ,  Gary McQuillis ,  Jerome Jenkins

    IPC分类号： C21C5/36 ,  C21C7/10

    CPC分类号： C21C7/06 ,  C21C5/54 ,  C21C7/0645 ,  C21C7/076 ,  C21C7/10 ,  C21C2300/08 ,  Y02P10/216 ,  Y02P10/242

    摘要： A method of desulfurizing steel including steps of forming a slag over a molten metal, drawing a vacuum to less than 5 torr over the slag and molten metal, stirring the molten metal and slag, and deoxidizing and desulfurizing the molten metal and slag to degas the steel reducing at least sulfur, nitrogen, oxygen, and hydrogen contents, and reducing activity of oxygen in the molten metal to less than 30 ppm. The method includes forming a slag composition after degassing the steel comprising CaO between about 50 and 70% by weight, SiO2 between about 20 and 28% by weight, CaF2 between about 5 and 15% by weight, MgO not more than 8% by weight, Al2O3 not more than 1% by weight, and a combination of FeO+MnO not more than 2% by weight, where the sum of CaO+CaF2+SiO2+MgO is at least 85% by weight.

    摘要翻译： 一种脱硫钢的方法，包括在熔融金属上形成炉渣的步骤，在炉渣和熔融金属上抽真空至小于5托，搅拌熔融金属和炉渣，以及使熔融金属和炉渣脱气脱硫脱气 钢至少还原硫，氮，氧和氢含量，并将熔融金属中氧的活性降低到30ppm以下。 该方法包括在对包含约50-70重量％的CaO，约20-28重量％之间的SiO 2，约5-15重量％的CaF 2和不超过8重量％的MgO进行脱气之后， ，Al 2 O 3不超过1重量％，FeO + MnO的组合不超过2重量％，其中CaO + CaF 2 + SiO 2 + MgO的总和至少为85重量％。

    METHOD OF CONTINUOUSLY CASTING THIN STRIP
    5.
    发明申请
    METHOD OF CONTINUOUSLY CASTING THIN STRIP 审中-公开
    连续铸造薄条的方法

    公开(公告)号：US20130186586A1

    公开(公告)日：2013-07-25

    申请号：US13798881

    申请日：2013-03-13

    申请人： Dhiren Panda ,  Leigh Woolley ,  Neal Ross ,  Gary McQuillis ,  James D. Edwards

    发明人： Dhiren Panda ,  Leigh Woolley ,  Neal Ross ,  Gary McQuillis ,  James D. Edwards

    IPC分类号： B22D11/06

    CPC分类号： B22D11/0697 ,  B22D11/002

    摘要： A method of continuously casting steel including steps of forming a casting pool of molten steel comprising a carbon content of less than 0.5% by weight on casting surfaces of a pair of internally cooled casting rolls having a nip formed between them, counter rotating the casting surfaces of the casting rolls toward each other to produce a cast steel strip moving downwardly away from the nip between the casting rolls, guiding the cast strip through a first enclosure adjacent the casting rolls as the strip moves away from the casting rolls, the first enclosure having a reducing atmosphere containing carbon monoxide and optionally hydrogen of at least 0.1%, establishing the reducing atmosphere in the first enclosure to control ingress of atmospheric air so as to maintain said atmosphere with a CO to CO2 ratio of at least 1.5 during steady state operation.

    摘要翻译： 一种连续铸造钢的方法，包括在其间形成有辊隙的一对内部冷却的铸辊的铸造表面上形成含有小于0.5重量％的碳含量的钢水铸造池的步骤， 的铸造辊朝向彼此以产生从铸辊之间的辊隙向下移动的铸钢带，当铸钢带远离铸辊移动时，通过邻近铸辊的第一外壳引导铸钢带，第一外壳具有 含有至少0.1％的一氧化碳和任选的氢的还原气氛，在第一外壳中建立还原气氛以控制大气空气的进入，以便在稳态操作期间以CO至CO 2比保持至少1.5的CO气氛。