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首页> 外文期刊>Tribology letters >The Braking Behaviors of Cu-Based Metallic Brake Pad for High-Speed Train Under Different Initial Braking Speed
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The Braking Behaviors of Cu-Based Metallic Brake Pad for High-Speed Train Under Different Initial Braking Speed

机译：不同初始制动速度下高速列车的Cu基金属制动垫的制动行为

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摘要

The purpose of this research was to study the braking behaviors of Cu-based composite pad under real operating conditions of high-speed train. A series of padon-disk braking tests was performed with the initial braking speed (IBS) from 80 to 380 km/h. Results showed that the coefficient of friction (COF) of the brake pad demonstrated a three-stage feature with the increase in IBS. It decreased from 0.395 to 0.358 with the increase in IBS from 80 to 200 km/h, then increased to 0.398 when IBS reached 320 km/h; and fell again to 0.379 at 380 km/h. Similarly, the pad also displayed three wear regimes as IBS increased, i.e., (1) mild wear (80-160 km/h), (2) moderate wear (200-250 km/h), and (3) severe wear (300-380 km/h). Surface morphologies and phase analyses indicate that the evolution of the COF mainly depends upon the state of friction film. The formation or completion of friction film regularly contributes to a lower COF and wear rate, while the destruction of friction film results in a higher COF and wear rate. Besides, the "lubricants'' induced by high braking temperature are also responsible for the change in the COF. As IBS increased, the key wear mechanisms changed from abrasion, plowing, and oxidation to delamination at 250 km/h.
机译：本研究的目的是在高速列车实际操作条件下研究Cu基复合垫的制动行为。使用80至380 km / h的初始制动速度（IBS）进行一系列Padon磁盘制动测试。结果表明，制动垫的摩擦系数（COF）展示了一种三阶段特征，随着IBS的增加。它从0.395减少到0.358，随着80至200 km / h的增加，当IBS达到320 km / h时，增加到0.398;并再次跌至380 km / h 0.379。同样，垫也显示出三个磨损制度随着IBS的增加，即（1）轻度磨损（80-160 km / h），（2）中等磨损（200-250 km / h），和（3）严重磨损（ 300-380 km / h）。表面形态和相位分析表明COF的演化主要取决于摩擦膜的状态。摩擦膜的形成或完成定期有助于较低的COF和磨损率，而摩擦膜的破坏导致更高的COF和磨损率。此外，高制动温度引起的“润滑剂”也负责COF的变化。随着IBS的增加，关键磨损机制从磨损，耕种和氧化变为250 km / h。

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  • 来源
    《Tribology letters》 |2017年第4期|共13页
  • 作者

    Peng Tao; Yan Qingzhi; Li Gen; Zhang Xiaolu; Wen Zefeng; Jin Xuesong;

  • 作者单位

    Univ Sci &

    Technol Beijing Lab Special Ceram &

    Powder Met Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Lab Special Ceram &

    Powder Met Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Lab Special Ceram &

    Powder Met Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Lab Special Ceram &

    Powder Met Beijing 100083 Peoples R China;

    Southwest Jiaotong Univ Tribol Res Inst State Key Lab Tract Power Chengdu 610031 Peoples R China;

    Southwest Jiaotong Univ Tribol Res Inst State Key Lab Tract Power Chengdu 610031 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械摩擦、磨损与润滑;
  • 关键词

    Braking behaviors; Metallic brake pad; High-speed train; Inertia braking tests;

    机译：制动行为;金属制动垫;高速列车;惯性制动测试;

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