METHOD FOR REDUCING FORMATION OF ELECTRICALLY RESISTIVE LAYER ON FERRITIC STAINLESS STEELS
    4.
    发明申请
    METHOD FOR REDUCING FORMATION OF ELECTRICALLY RESISTIVE LAYER ON FERRITIC STAINLESS STEELS 审中-公开
    减少在铁素体不锈钢上形成电阻层的方法

    公开(公告)号:WO2008109652A3

    公开(公告)日:2008-11-13

    申请号:PCT/US2008055872

    申请日:2008-03-05

    Inventor: RAKOWSKI JAMES M

    Abstract: A method of reducing the formation of electrically resistive scale on a an article comprising a silicon-containing ferritic stainless subjected to oxidizing conditions in service includes, prior to placing the article in service, subjecting the article to conditions under which silica, which includes silicon derived from the steel, forms on a surface of the steel. Optionally, at least a portion of the silica is removed from the surface to placing the article in service. A ferritic stainless steel alloy having a reduced tendency to form silica on at least a surface thereof also is provided. The steel includes a near-surface region that has been depleted of silicon relative to a remainder of the steel.

    Abstract translation: 一种减少包含在使用中氧化条件下经受氧化条件的含硅铁素体不锈钢的制品上电阻结垢形成的方法,包括在将制品投入使用之前,使制品经受包括衍生硅的二氧化硅 来自钢,形成在钢的表面上。 任选地,从表面去除至少一部分二氧化硅以将制品放置在使用中。 还提供了在其至少一个表面上形成二氧化硅的倾向降低的铁素体不锈钢合金。 钢包括一个近乎表面的区域,该区域已经相对于钢的其余部分被耗尽了硅。

    AUSTENITIC STAINLESS STEEL
    6.
    发明申请
    AUSTENITIC STAINLESS STEEL 审中-公开
    奥氏体不锈钢

    公开(公告)号:WO2008041961A2

    公开(公告)日:2008-04-10

    申请号:PCT/US2006013175

    申请日:2006-04-07

    Abstract: Embodiments of an austenitic stainless steel include, in weight percentages based on total weight of the steel: 0.05 to 0.2 carbon; 0.08 to 0.2 nitrogen; 20 to 23 chromium; 25 to 27 nickel; 1 to 2 molybdenum; greater than 1.5 to 4.0 manganese; 0.20 to 0.75 niobium; up to 0.1 titanium; iron; and incidental impurities. Certain other embodiments of an austenitic stainless steel include, in weight percentages based on total weight of the steel: 0.05 to 0.2 carbon; 0.08 to 0.2 nitrogen; 20 to 23 chromium; 25 to 27 nickel; 1 to 2 molybdenum; up 4.0 manganese; 0.20 to 0.75 niobium; at least one of no greater than 0.1 titanium and no greater than 0.1 aluminum; iron; and incidental impurities.

    Abstract translation: 奥氏体不锈钢的实施方式包括以重量百分比计,基于钢的总重量:0.05至0.2碳; 0.08至0.2氮; 20至23铬; 25至27镍; 1至2个钼; 大于1.5至4.0的锰; 0.20至0.75铌; 最多0.1钛; 铁; 和偶然的杂质。 奥氏体不锈钢的某些其他实施方式包括以重量百分比计,基于钢的总重量:0.05至0.2碳; 0.08至0.2氮; 20至23铬; 25至27镍; 1至2个钼; 上涨4.0锰; 0.20至0.75铌; 至少一个不大于0.1的钛和不大于0.1的铝; 铁; 和偶然的杂质。

    CORROSION RESISTANT LEAN AUSTENITIC STAINLESS STEEL

    公开(公告)号:ZA201004196B

    公开(公告)日:2022-03-30

    申请号:ZA201004196

    申请日:2010-06-11

    Abstract: An austenitic stainless steel composition having low nickel and molybdenum and exhibiting high corrosion resistance and good formability. The austenitic stainless steel includes, in weight %, up to 0.20 C, 2.0-6.0 Mn, up to 2.0 Si, 16.0-23.0 Cr, 5.0-7.0 Ni, up to 3.0 Mo, up to 3.0 Cu, 0.1-0.35 N, up to 4.0 W, up to 0.01 B, up to 1.0 Co, iron and impurities. The austenitic stainless steel has a ferrite number less than 11 and an MD30 value less than −10° C.

    CHEMICAL REMOVAL OF SURFACE DEFECTS FROM GRAIN ORIENTED ELECTRICAL STEEL

    公开(公告)号:CA2861823A1

    公开(公告)日:2013-07-25

    申请号:CA2861823

    申请日:2013-01-03

    Inventor: RAKOWSKI JAMES M

    Abstract: A method of reducing defect heights of iron mound defects on a mill glass coated electrical steel, comprises contacting at least a portion of a surface of a mill glass coated electrical steel with an acidic solution for a contacting time sufficient to reduce an average height of iron defects on the surface to an average height in a range of 0 percent to 150 percent of the thickness of the mill glass coating, without effectively removing the mill glass coating. After contacting, the acid contacted mill glass coated electrical steel is rinsed with water and dried.

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