METHOD AND APPARATUS FOR TREATMENT OF A RAIL WELD
    1.
    发明申请
    METHOD AND APPARATUS FOR TREATMENT OF A RAIL WELD 有权
    铁路焊接处理方法与装置

    公开(公告)号:US20130133784A1

    公开(公告)日:2013-05-30

    申请号:US13306137

    申请日:2011-11-29

    摘要: The present invention provides a rail weld treatment device for improving a resulting microstructure in and around an effected zone of a rail weld and of rails surrounding the rail weld. The device includes, but is not limited to a fixture clamping and centering assembly for engaging a rail head of a rail and a heating and cooling device connected with the fixture clamping and centering assembly to be positioned over the rail head. The fixture clamping and centering assembly comprises an engagement member which removably engages the rail head. The heating and cooling device includes a heating member for heating an effected zone of the rail weld and a cooling member for cooling the effected zone.

    摘要翻译: 本发明提供一种轨道焊接处理装置,用于改善轨道焊接的受影响区域和围绕钢轨焊缝的轨道内和周围的所得微结构。 该装置包括但不限于用于接合轨道的轨道头的固定夹具和定心组件以及与夹具夹紧和定心组件连接以定位在轨道头上的加热和冷却装置。 夹具夹紧和定中心组件包括可拆卸地接合轨头的接合构件。 加热和冷却装置包括用于加热轨道焊接的受影响区域的加热构件和用于冷却受影响区域的冷却构件。

    High impact and wear resistant steel
    6.
    发明授权
    High impact and wear resistant steel 有权
    高冲击和耐磨钢

    公开(公告)号:US07288159B2

    公开(公告)日:2007-10-30

    申请号:US10120471

    申请日:2002-04-10

    IPC分类号: C21D9/06

    摘要: An improved steel railroad rail, and methods for producing same, having a high-carbon content in a range from more than 0.9 to 1.1 wt % is provided that has increased wear resistance and increased fracture toughness over conventional steel rail. The high-carbon rail is characterized as having a pearlitic phase of an eutectoid nature. The average ultimate tensile strength is in a range from 204,860 to 222,120 psi, with a minimum of 174,000 psi. The average yield strength is in a range from 132,320 to 148,450 psi, with the minimum of 120,000 psi. The average percent elongation is in a range from 10.50 to 11.14, with a minimum of 10.00. The Brinell hardness on the surface at any position of the head top and upper gage corners of the rail is in a range from 390 to 440 BHN. The hardness 19 mm below the top surface is in a range from 360 to 435 BHN and 19 mm below the surface at the upper gage corners is in a range from 360 to 410 BHN. The characteristics of the steel rail produced in accordance with the present invention is a substantial improvement as compared with rail used today. The production of a fully pearlitic steel rail having a carbon content from more than 0.9 to 1.1 wt % is remarkable and unexpected. A steel rail of this type having a hardness in a range from 400 to 440 BHN and a combination of yield strength, ultimate tensile strength, elongation and surface and in-depth Brinell hardness goes beyond all expectations and results in a superior and commercially important steal rail.

    摘要翻译: 提供了一种改进的钢铁轨道及其制造方法,其具有大于0.9至1.1重量%的高碳含量,其具有比常规钢轨更高的耐磨性和增加的断裂韧性。 高铁轨道的特点是具有共晶性质的珠光体相。 平均极限拉伸强度在204,860至222,120psi的范围内,最小值为174,000psi。 平均屈服强度在132,320至148,450psi的范围内,最小值为120,000psi。 平均百分比伸长率范围为10.50至11.14,最小为10.00。 轨道头顶和上限角的任何位置的表面上的布氏硬度在390至440 BHN的范围内。 上表面下方19mm的硬度在360〜435HBN的范围内,上限角处的表面下方的19mm的硬度在360〜410HBN的范围内。 与现在使用的轨道相比,根据本发明生产的钢轨的特征是显着的改进。 碳含量大于0.9〜1.1重量%的完全珠光体钢轨的生产是出人意料的。 这种类型的钢轨具有400至440 BHN的硬度以及屈服强度,极限拉伸强度,伸长率和表面以及深度布氏硬度的组合超出了所有预期,并导致了卓越和商业上重要的偷 轨。