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    Method for manufacturing brass-plated steel wire, steel cord, and tire
    361.
    发明专利
    Method for manufacturing brass-plated steel wire, steel cord, and tire 有权
    钢丝绳，钢丝绳和轮胎的制造方法

    公开(公告)号：JP2008200729A

    公开(公告)日：2008-09-04

    申请号：JP2007041470

    申请日：2007-02-21

    Applicant: Bridgestone Corp ,  株式会社ブリヂストン

    Inventor： KOBAYASHI TOSHIYUKI

    IPC: B21C1/00 ,  B21C1/06 ,  B60C9/00 ,  D07B1/06

    CPC classification number: D07B1/0666 ,  D07B2201/2011 ,  D07B2205/3089 ,  D07B2501/2046 ,  D07B2801/18

    Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a brass-plated steel wire, capable of improving the service life and the wire drawability of a final die, which are problems in conventional techniques, to secure high adhesivity and high ductility, and further improving productivity, and to provide a steel cord and a tire that are obtained through the method.
    SOLUTION: The brass-plated steel wire is manufactured through a step of performing wet drawing by a multi-stage slip type wire drawing machine 10. The brass plating layer of the steel wire has two plating layers composed of a lower layer part and a surface layer part having a Cu content higher than that of the lower layer part. A final drawing die 14 of the multi-stage slip type wire drawing machine 10 is immersed in a lubricant liquid 11 to conduct wire drawing, and final wire drawing is conducted with a sintered diamond die 15, which is arranged at the back of the final drawing die 14, at an area reduction rate of

    Abstract translation: 解决的问题：为了提供一种能够提高常规技术中存在问题的最终模具的使用寿命和拉丝性的镀黄铜钢丝的制造方法，以确保高粘合性和高延展性 ，进一步提高生产率，并提供通过该方法获得的钢丝帘线和轮胎。

    解决方案：镀黄铜的钢丝是通过多级滑动型拉丝机10进行湿拉伸的步骤制造的。钢丝的黄铜镀层具有由下层部分 以及Cu含量高于下层部分的表面层部分。 将多级滑动型拉丝机10的最终拉丝模14浸渍在润滑剂液体11中进行拉丝，最后拉丝是用最后的布置在最后的金刚石模具15上进行的 拉丝模14，面积减少率<2％。 版权所有（C）2008，JPO＆INPIT

    Double rust-proof pc steel twisted wire
    369.
    发明专利
    Double rust-proof pc steel twisted wire 有权
    双重防腐PC钢双绞线

    公开(公告)号：JP2013217001A

    公开(公告)日：2013-10-24

    申请号：JP2012090872

    申请日：2012-04-12

    Applicant: Kurosawa Construction Co Ltd ,  黒沢建設株式会社

    Inventor： KUROSAWA RYOHEI ,  HIRAI KEI

    IPC: D07B1/16 ,  D07B1/06

    CPC classification number: D07B1/02 ,  D07B1/0693 ,  D07B7/185 ,  D07B2201/2006 ,  D07B2201/2011 ,  D07B2201/2012 ,  D07B2201/2013 ,  D07B2201/2044 ,  D07B2201/2046 ,  D07B2201/2051 ,  D07B2201/2059 ,  D07B2201/2065 ,  D07B2205/306 ,  D07B2205/3064 ,  D07B2205/3067 ,  D07B2205/3071 ,  D07B2207/404 ,  D07B2207/4059 ,  D07B2301/10 ,  D07B2301/45 ,  D07B2401/2025 ,  D07B2501/2023 ,  D07B2801/12 ,  D07B2801/18 ,  D07B2801/60

    Abstract: PROBLEM TO BE SOLVED: To provide a PC steel twisted wire capable of performing substantially semipermanent antirust as well as excellent high sustainability in comparison to the conventional PC steel twisted wire.SOLUTION: A PC steel twisted wire 10 comprises a synthetic resin coating on a circumferential surface for anticorrosive treatment. The PC steel twisted wire comprises a core wire 8 and a side wire 9, each element wire 1 is subjected to the wire drawing treatment followed by the plating treatment to form a plating layer. Each of the element wires is adjusted under the adjusting conditions (A) to (C) of wire diameter as below and then twisted together. The plating layer serves to cover the partial surface delamination of the synthetic resin coating formed on the circumferential surface or rust proof deficiency due to pinholes. The double rust-preventing PC steel twisted wire thus obtained has a tensile strength of 1850 N/mmor more. (A) core wire diameter: 4.42±0.05, side wire diameter: 4.25±0.05, (B) core wire diameter: 5.22±0.05, side wire diameter: 5.06±0.05, (C) core wire diameter: 5.40±0.05, side wire diameter: 5.25±0.05.

    Abstract translation: 要解决的问题：与常规PC钢绞线相比，提供能够执行基本上半永久性防锈性以及优异的高可持续性的PC钢绞线。解决方案：PC钢绞线10包括圆周上的合成树脂涂层 表面进行防腐处理。 PC钢绞线包括芯线8和侧线9，对每个元件线1进行拉丝处理，随后进行电镀处理以形成镀层。 在如下的线径的调整条件（A）〜（C）下调整各元件线，然后将其捻合在一起。 电镀层用于覆盖在圆周面上形成的合成树脂涂层的部分表面剥离或由于针孔产生的防锈缺陷。 这样得到的双防锈PC钢绞线的拉伸强度为1850N / mm以上。 （A）芯线直径：4.42±0.05，侧线直径：4.25±0.05，（B）芯线直径：5.22±0.05，侧线直径：5.06±0.05，（C）芯线直径：5.40±0.05 线径：5.25±0.05。

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