Low iron loss non-oriented electrical steel sheet excellent in workability and method for producing the same
    1.
    发明授权
    Low iron loss non-oriented electrical steel sheet excellent in workability and method for producing the same 有权
    作业性优良的低铁损无取向电工钢板及其制造方法

    公开(公告)号:US06478892B2

    公开(公告)日:2002-11-12

    申请号:US09827968

    申请日:2001-04-06

    IPC分类号: H01F104

    摘要: The present invention provides a non-oriented electrical steel sheet having crystal grains of small diameter and excellent workability before stress relief annealing and having crystal grains of largely grown diameter and excellent iron loss property after stress relief annealing and a method for producing the same, and relates to a low iron loss non-oriented electrical steel sheet excellent in workability, containing, in weight %, 0.010% or less of C, 0.1 to 1.5% of Mn, 0.1 to 4% of Si, 0.1 to 4% of Al, wherein the latter three elements satisfy the formula Si+Mn+Al≦5.0%, and 0.0005 to 0.0200% of Mg, or further containing 0.005% or more of Ca, wherein the total amount of Mg and Ca is 0.0200% or less, or further containing 0.005% or more of REM, wherein the total amount of Mg and REM is 0.0200% or less, or further containing 0.005% or more of Ca and REM, wherein the total amount of Mg, Ca and REM is 0.0200% or less, and containing the remainder consisting of Fe and unavoidable impurities.

    摘要翻译: 本发明提供一种在应力消除退火之前具有直径小的晶粒和可加工性优异的无取向电工钢板,其具有大直径生长的晶粒和应力消除退火后的优异的铁损性能及其制造方法, 涉及加工性优异的低铁损无取向电工钢板,其含量为C:0.010%以下,Mn:0.1〜1.5%,Si:0.1〜4%,Al:0.1〜4% 其中后三种元素满足式Si + Mn + Al <= 5.0%,Mg:0.0005〜0.0200%,进一步含有0.005%以上的Ca,其中Mg和Ca的总量为0.0200%以下, 或进一步含有0.005%以上的REM,其中Mg和REM的总量为0.0200%以下,或进一步含有0.005%以上的Ca和REM,其中Mg,Ca和REM的总量为0.0200%,或 较少,含有余量由Fe和不可避免的impuriti组成 es。

    Ferritic stainless steel casting and sheet and method for producing the same
    6.
    发明授权
    Ferritic stainless steel casting and sheet and method for producing the same 有权
    铁素体不锈钢铸件及其制造方法

    公开(公告)号:US08628631B2

    公开(公告)日:2014-01-14

    申请号:US13066020

    申请日:2011-04-05

    IPC分类号: C22C38/00

    摘要: The present invention provides a ferritic stainless steel casting and a sheet thereof excellent in deep drawability, punch stretchability and ridging resistance and a method for producing the casting and the sheet. In the present invention, a chemical composition is controlled so that the amounts of C, N, Si, Mn, P and Ti may be reduced to the utmost for securing high workability and, on the basis of the chemical composition, the roping and ridging of a steel sheet product is reduced by adding Mg, thus dispersing Mg containing oxides that accelerate the formation of nuclei for solidification and, resultantly, suppressing the development of coarse columnar crystals in a casting. The present invention is characterized in that the average composition of the Mg containing oxides dispersing in a casting satisfies the following expressions and , 17.4(Al2O3)+3.9(MgO)+0.3(MgAl2O4)+18.7(CaO)≦500   , (Al2O3)+(MgO)+(MgAl2O4)+(CaO)≧95   .

    摘要翻译: 本发明提供一种铁素体不锈钢铸件及其深冲性,冲压伸缩性和抗皱性优异的片材以及铸造和片材的制造方法。 在本发明中,化学成分被控制为使得可以将C,N,Si,Mn,P和Ti的量最大限度地降低以确保高的可加工性,并且基于化学成分,卷绕和起皱 通过添加Mg来还原钢板产品,从而分散加速形成核固化的含Mg氧化物,从而抑制铸造中的粗大柱状晶体的发展。 本发明的特征在于,分散在铸件中的含Mg氧化物的平均组成满足以下表达式2和3,17.4(Al 2 O 3)+3.9(MgO)+0.3(MgAl 2 O 4)+18.7(CaO) (Al 2 O 3)+(MgO)+(MgAl 2 O 4)+(CaO)> = 95 3。

    Pearlitic rail with excellent wear resistance and toughness
    7.
    发明授权
    Pearlitic rail with excellent wear resistance and toughness 有权
    珍珠岩轨道具有优异的耐磨性和韧性

    公开(公告)号:US08469284B2

    公开(公告)日:2013-06-25

    申请号:US13201573

    申请日:2010-01-21

    IPC分类号: E01B5/00

    摘要: This pearlitic rail consists of a steel including: in terms of percent by mass, C: 0.65% to 1.20%; Si: 0.05% to 2.00%; Mn: 0.05% to 2.00%; and REM: 0.0005% to 0.0500%, with the balance being Fe and inevitable impurities, wherein, in a head portion of the rail, a head surface portion which ranges from surfaces of head corner portions and a head top portion to a depth of 10 mm has a pearlite structure, and the hardness Hv of the head surface portion is in a range of 320 to 500.

    摘要翻译: 该珠光体钢轨由钢组成,其质量百分比为C:0.65〜1.20%。 Si:0.05〜2.00% Mn:0.05〜2.00% 和REM:0.0005〜0.0500%,余量为Fe和不可避免的杂质,其中,在轨道的头部中,具有从头部拐角部分的表面和头顶部分到10深度的头部表面部分 mm具有珠光体组织,头表面部分的硬度Hv在320〜500的范围内。

    PEARLITIC RAIL WITH EXCELLENT WEAR RESISTANCE AND TOUGHNESS
    8.
    发明申请
    PEARLITIC RAIL WITH EXCELLENT WEAR RESISTANCE AND TOUGHNESS 有权
    具有优异耐磨性和韧性的PEARLITIC RAIL

    公开(公告)号:US20110303756A1

    公开(公告)日:2011-12-15

    申请号:US13201573

    申请日:2010-01-21

    IPC分类号: E01B5/02

    摘要: This pearlitic rail consists of a steel including: in terms of percent by mass, C: 0.65% to 1.20%; Si: 0.05% to 2.00%; Mn: 0.05% to 2.00%; and REM: 0.0005% to 0.0500%, with the balance being Fe and inevitable impurities, wherein, in a head portion of the rail, a head surface portion which ranges from surfaces of head corner portions and a head top portion to a depth of 10 mm has a pearlite structure, and the hardness Hv of the head surface portion is in a range of 320 to 500.

    摘要翻译: 该珠光体钢轨由钢组成,其质量百分比为C:0.65〜1.20%。 Si:0.05〜2.00% Mn:0.05〜2.00% 和REM:0.0005〜0.0500%,余量为Fe和不可避免的杂质,其中,在轨道的头部中,具有从头部拐角部分的表面和头顶部分到10深度的头部表面部分 mm具有珠光体组织,头表面部分的硬度Hv在320〜500的范围内。

    PEARLITIC STEEL RAIL EXCELLENT IN WEAR RESISTANCE AND DUCTILITY AND METHOD FOR PRODUCING SAME
    9.
    发明申请
    PEARLITIC STEEL RAIL EXCELLENT IN WEAR RESISTANCE AND DUCTILITY AND METHOD FOR PRODUCING SAME 有权
    耐磨损和耐腐蚀性优异的PEARLITIC STEEL RAIL及其生产方法

    公开(公告)号:US20080011393A1

    公开(公告)日:2008-01-17

    申请号:US11780166

    申请日:2007-07-19

    IPC分类号: C21D9/04

    摘要: The present invention is: a pearlitic steel rail excellent in wear resistance and ductility, characterized in that, in a steel rail having pearlite structure containing, in mass, 0.65 to 1.40% C, the number of the pearlite blocks having grain sizes in the range from 1 to 15 μm is 200 or more per 0.2 mm2 of an observation field at least in a part of the region down to a depth of 10 mm from the surface of the corners and top of the head portion; and a method for producing a pearlitic steel rail excellent in wear resistance and ductility, characterized by, in the hot rolling of said steel rail, applying finish rolling so that the temperature of the rail surface may be in the range from 850° C. to 1,000° C. and the sectional area reduction ratio at the final pass may be 6% or more, and then applying accelerated cooling to the head portion of said rail at a cooling rate in the range from 1 to 30° C./sec. from the austenite temperature range to at least 550° C.

    摘要翻译: 本发明是一种耐磨损性和延展性优异的珠光体钢轨道,其特征在于,在具有质量为0.65〜1.40%C的珠光体组织的钢轨中,粒径在该范围内的珠光体块的数量 至少一部分区域中,从角到顶的距离为10mm的距离,从1到15个妈妈是0.2或2以上的0.2mm 2的观察场所, 一部分; 以及具有优异的耐磨性和延展性的珠光体钢轨的制造方法,其特征在于,在所述钢轨的热轧中进行精轧,使得轨面的温度可以在850℃〜 1000℃,最终通过时的截面积减少率可以为6%以上,然后以1〜30℃/秒的冷却速度对所述导轨的头部进行加速冷却。 从奥氏体温度范围至至少550℃

    Ferritic stainless steel casting and sheet and method for producing the same
    10.
    发明授权
    Ferritic stainless steel casting and sheet and method for producing the same 有权
    铁素体不锈钢铸件及其制造方法

    公开(公告)号:US08293038B2

    公开(公告)日:2012-10-23

    申请号:US11985296

    申请日:2007-11-13

    IPC分类号: C22C38/00

    摘要: The present invention provides a ferritic stainless steel casting and a sheet thereof excellent in deep drawability, punch stretchability and ridging resistance and a method for producing the casting and the sheet. In the present invention, a chemical composition is controlled so that the amounts of C, N, Si, Mn, P and Ti may be reduced to the utmost for securing high workability and, on the basis of the chemical composition, the roping and ridging of a steel sheet product is reduced by adding Mg, thus dispersing Mg containing oxides that accelerate the formation of nuclei for solidification and, resultantly, suppressing the development of coarse columnar crystals in a casting. The present invention is characterized in that the average composition of the Mg containing oxides dispersing in a casting satisfies the following expressions and , 17.4(Al2O3)+3.9(MgO)+0.3(MgAl2O4)+18.7(CaO)≦500   , (Al2O3)+(MgO)+(MgAl2O4)+(CaO)≧95   .

    摘要翻译: 本发明提供一种铁素体不锈钢铸件及其深冲性,冲压伸缩性和抗皱性优异的片材以及铸造和片材的制造方法。 在本发明中,化学成分被控制为使得可以将C,N,Si,Mn,P和Ti的量最大限度地降低以确保高的可加工性,并且基于化学成分,卷绕和起皱 通过添加Mg来还原钢板产品,从而分散加速形成核固化的含Mg氧化物,从而抑制铸造中的粗大柱状晶体的发展。 本发明的特征在于,分散在铸件中的含Mg氧化物的平均组成满足以下表达式2和3,17.4(Al 2 O 3)+3.9(MgO)+0.3(MgAl 2 O 4)+18.7(CaO) &Al; 500 2,(Al 2 O 3)+(MgO)+(MgAl 2 O 4)+(CaO)≥953。