Pipe end correction method of seamless pipe made of high CR stainless steel
    4.
    发明授权
    Pipe end correction method of seamless pipe made of high CR stainless steel 有权
    高铬不锈钢无缝管管端修正方法

    公开(公告)号:US09468967B2

    公开(公告)日:2016-10-18

    申请号:US13985335

    申请日:2012-02-14

    Inventor: Toshio Mochizuki

    Abstract: The pipe end correction method for correcting an inner diameter of pipe end of a seamless pipe made of a high Cr stainless steel containing 8 to 35 mass % Cr, and 0.1 to 10 mass % Ni includes a pipe end correction step following hot tube-making and heat treatment, that forces a plug into the inside of pipe end portion for inner diameter correction so as to expand the pipe end portion while oxide scale, which is generated during tube-making or heat treatment, remains accumulated on an inner surface of the pipe end portion. A lubricant film forming step, prior to the pipe end correction step, applies lubricant at least either on the inner surface of the pipe end portion of the seamless pipe or on a surface of the plug. Seizure flaws can be prevented on the inner surface of the pipe end portion of the high Cr stainless steel.

    Abstract translation: 用于校正由含有8〜35质量%Cr和0.1〜10质量%Ni的高Cr不锈钢制成的无缝管的内径的管端校正方法包括热管制造后的管端校正步骤 并进行热处理,迫使插塞进入管端部的内部进行内径校正,以便扩大管端部,同时在管制或热处理期间产生的氧化皮保持在所述管端部的内表面上积聚 管端部。 在管端校正步骤之前的润滑剂膜形成步骤,至少在无缝管的管端部的内表面上或者在塞的表面上施加润滑剂。 在高Cr不锈钢管端部的内表面可以防止发生瑕疵。

    STEEL CORD FOR RUBBER REINFORCEMENT AND METHOD FOR MANUFACTURING THE SAME
    8.
    发明申请
    STEEL CORD FOR RUBBER REINFORCEMENT AND METHOD FOR MANUFACTURING THE SAME 有权
    用于橡胶加固的钢丝绳及其制造方法

    公开(公告)号:US20160130750A1

    公开(公告)日:2016-05-12

    申请号:US14798638

    申请日:2015-07-14

    Abstract: The present invention relates to a steel cord for rubber reinforcement. In the steel cord of the present invention, cobalt is contained by 0.001 ppm to 0.1 ppm within a 4 nm top-surface of the brass-plated steel wire. A method of manufacturing the steel cord includes: providing a brass-plated steel wire; mixing a cobalt compound in a wet lubricant filled in a wet drawing bath provided with a plurality of drawing dies between one pair of multi-stage drawing cones such that the concentration of the cobalt compound becomes 0.1 ppm to 100 ppm; and causing the cobalt to be contained by 0.001 ppm to 0.1 ppm within a 4 nm top-surface of the brass-plated steel wire after the brass-plated steel wire passes through a final die by causing the cobalt to be attached to a surface of the brass-plated steel wire and alloyed with a brass layer while the brass-plated steel wire is passing through the drawing cones and the drawing dies to be subjected to multi-stage drawing.

    Abstract translation: 本发明涉及一种橡胶增强用钢丝帘线。 在本发明的钢丝绳中,在镀黄铜钢丝的4nm的顶面内,钴含有0.001ppm〜0.1ppm。 一种制造钢帘线的方法包括:提供镀黄铜钢丝; 将填充在设置有多个拉伸模具的湿式拉伸槽中的湿润滑剂中的钴化合物混合在一对多级拉伸锥之间,使得钴化合物的浓度变为0.1ppm至100ppm; 并且在镀黄钢丝穿过最终模具之后,在镀黄铜钢丝的4nm顶表面内使钴含量为0.001ppm至0.1ppm,通过使钴附着在 镀黄铜的钢丝并与黄铜层合金,而镀黄钢丝穿过拉丝锥和拉丝模具进行多段拉伸。

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