High-Strength Pearlitic Steel Rail Having Excellent Delayed Fracture Properties
    4.
    发明申请
    High-Strength Pearlitic Steel Rail Having Excellent Delayed Fracture Properties 有权
    高强度珍珠岩钢轨具有优良的延迟断裂性能

    公开(公告)号:US20090274572A1

    公开(公告)日:2009-11-05

    申请号:US12225104

    申请日:2007-03-16

    摘要: The invention provides a high-strength pearlitic steel rail, which is inexpensive, and has a tensile strength of 1200 MPa or more, and is excellent in delayed fracture properties. Specifically, the rail contains, in mass percent, C of 0.6 to 1.0%, Si of 0.1 to 1.5%, Mn of 0.4 to 2.0%, P of 0.035% or less, S of 0.0005 to 0.010%, and the remainder is Fe and inevitable impurities, wherein tensile strength is 1200 MPa or more, and size of a long side of an A type inclusion is 250 mm or less in at least a cross-section in a longitudinal direction of a rail head, and the number of A type inclusions, each having a size of a long side of 1 mm to 250 mm, is less than 25 per observed area of 1 mm2 in the cross-section in the longitudinal direction of the rail head.

    摘要翻译: 本发明提供一种廉价的拉伸强度为1200MPa以上的高强度珠光体钢轨,延迟断裂性优异。 具体而言,铁素体以质量%计含有C为0.6〜1.0%,Si为0.1〜1.5%,Mn为0.4〜2.0%,P为0.035%以下,S为0.0005〜0.010%,余量为Fe 和不可避免的杂质,拉伸强度为1200MPa以上,A型夹杂物的长边的尺寸至少在轨头的长度方向的截面上为250μm以下,A的数量 每个具有1mm至250μm的长边尺寸的夹杂物在轨头的纵向方向上的横截面中小于25个每1mm观察面积。

    High-strength pearlitic steel rail having excellent delayed fracture properties
    5.
    发明授权
    High-strength pearlitic steel rail having excellent delayed fracture properties 有权
    高强度珠光体钢轨具有优异的延迟断裂性能

    公开(公告)号:US08404178B2

    公开(公告)日:2013-03-26

    申请号:US12225104

    申请日:2007-03-16

    IPC分类号: C22C38/60 C22C38/18 C22C38/12

    摘要: The invention provides a high-strength pearlitic steel rail, which is inexpensive, and has a tensile strength of 1200 MPa or more, and is excellent in delayed fracture properties. Specifically, the rail contains, in mass percent, C of 0.6 to 1.0%, Si of 0.1 to 1.5%, Mn of 0.4 to 2.0%, P of 0.035% or less, S of 0.0005 to 0.010%, and the remainder is Fe and inevitable impurities, wherein tensile strength is 1200 MPa or more, and size of a long side of an A type inclusion is 250 mm or less in at least a cross-section in a longitudinal direction of a rail head, and the number of A type inclusions, each having a size of a long side of 1 mm to 250 mm, is less than 25 per observed area of 1 mm2 in the cross-section in the longitudinal direction of the rail head.

    摘要翻译: 本发明提供一种廉价的拉伸强度为1200MPa以上的高强度珠光体钢轨,延迟断裂性优异。 具体而言,铁素体以质量%计含有C为0.6〜1.0%,Si为0.1〜1.5%,Mn为0.4〜2.0%,P为0.035%以下,S为0.0005〜0.010%,余量为Fe 和不可避免的杂质,拉伸强度为1200MPa以上,A型夹杂物的长边的尺寸至少在轨头的长度方向的截面上为250μm以下,A的数量 每个具有1mm至250μm的长边尺寸的夹杂物在轨头的纵向方向上的横截面中小于25个每1mm观察面积。

    HIGH-STRENGTH PEARLITIC STEEL RAIL HAVING EXCELLENT DELAYED FRACTURE PROPERTIES
    6.
    发明申请
    HIGH-STRENGTH PEARLITIC STEEL RAIL HAVING EXCELLENT DELAYED FRACTURE PROPERTIES 有权
    具有优异延迟断裂性能的高强度PEARLITIC钢轨

    公开(公告)号:US20120076685A1

    公开(公告)日:2012-03-29

    申请号:US13299678

    申请日:2011-11-18

    IPC分类号: C22C38/04 C22C38/00 C22C38/02

    摘要: A steel rail including a composition of, in mass percent, C of 0.6% to 1.0%, Si of 0.1% to 1.5%, Mn of 0.4% to 2.0%, P of 0.035% or less, S of 0.010% or less, Ca of 0.0010% to 0.010%, and the remainder being Fe and inevitable impurities, wherein the tensile strength is 1200 MPa or more, and the size of a long side of a C type inclusion is 50 μm or less in at least a cross-section in a longitudinal direction of a rail head, and the number of Ca type inclusions, each having a size of a long side of 1 μm to 50 μm, is 0.2 to 10 per observed area of 1 mm2 in the cross-section in the longitudinal direction of the rail head.

    摘要翻译: 一种钢轨,其以质量%计含有0.6%-1.0%的C,0.1%-1.5%的Si,0.4%到2.0%的Mn,0.035%以下的P,0.010%以下的S, Ca为0.0010%〜0.010%,余量为Fe和不可避免的杂质,其中拉伸强度为1200MPa以上,C型夹杂物的长边的尺寸至少为截面积为50μm以下, 轨头长度方向的截面积和长度方向为1μm〜50μm的Ca型夹杂物的数量,在截面的截面中为0.2mm〜10mm, 轨头的纵向。

    High-strength pearlitic steel rail having excellent delayed fracture properties
    7.
    发明授权
    High-strength pearlitic steel rail having excellent delayed fracture properties 有权
    高强度珠光体钢轨具有优异的延迟断裂性能

    公开(公告)号:US08361382B2

    公开(公告)日:2013-01-29

    申请号:US13299678

    申请日:2011-11-18

    IPC分类号: C22C38/60 C22C38/18 C22C38/12

    摘要: A steel rail including a composition of, in mass percent, C of 0.6% to 1.0%, Si of 0.1% to 1.5%, Mn of 0.4% to 2.0%, P of 0.035% or less, S of 0.010% or less, Ca of 0.0010% to 0.010%, and the remainder being Fe and inevitable impurities, wherein the tensile strength is 1200 MPa or more, and the size of a long side of a C type inclusion is 50 μm or less in at least a cross-section in a longitudinal direction of a rail head, and the number of Ca type inclusions, each having a size of a long side of 1 μm to 50 μm, is 0.2 to 10 per observed area of 1 mm2 in the cross-section in the longitudinal direction of the rail head.

    摘要翻译: 一种钢轨,其以质量%计含有0.6%-1.0%的C,0.1%-1.5%的Si,0.4%到2.0%的Mn,0.035%以下的P,0.010%以下的S, Ca为0.0010%〜0.010%,余量为Fe和不可避免的杂质,其中拉伸强度为1200MPa以上,C型夹杂物的长边的尺寸至少为截面积为50μm以下, 轨头长度方向的截面积和长度方向为1μm〜50μm的Ca型夹杂物的数量,在截面的截面中为0.2mm〜10mm, 轨头的纵向。