| 铸铁闸瓦磨损失效机理 |
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| 引用本文： | 张永振,戴宝林.铸铁闸瓦磨损失效机理[J].河南科技大学学报(自然科学版),1989,10(4):20-24. |
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| 作者姓名： | 张永振 戴宝林 |
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| 作者单位： | 洛阳工学院，洛阳工学院，洛阳工学院，洛阳车辆段，洛阳车辆段 |
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| 摘 要： | 应用扫描电镜(SEM)对火车刹车闸瓦进行了失效分析,并得出了以下结论:闸瓦的磨损主要是由疲劳块状剥落及磨粒磨损所造成;疲劳剥落是由于在应力作用下,次表层的磷共晶破碎,以及石墨尖端造成的应力集中,使它们周围的基体萌生裂纹并扩展的结果;闸瓦的块状剥落与磨料磨损相互促进加剧了磨损。最后提出了闸瓦磨损的物理模型,进一步说明了闸瓦的磨损过程。
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| 关 键 词： | 铸铁 闸瓦 磨损 失效机理 |
The Failure Mechanism of Cast Iron Brake Block |
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| Zhang Yongzhen Chen Darou Gu Jinli.The Failure Mechanism of Cast Iron Brake Block[J].Journal of Henan University of Science & Technology:Natural Science,1989,10(4):20-24. |
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| Authors: | Zhang Yongzhen Chen Darou Gu Jinli |
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| Institution: | Zhang Yongzhen Chen Darou Gu Jinli (Luoyang Institute of Technology)
Dai Baolin Liu Weiying (Luoyang Carriage Section) |
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| Abstract: | With SEM,the mechanism of wear thin of brake block for train is investigated inthis paper.The authors came to the conclusion that the wear of brake block occursmainly as a result of fatigue peeling off and abrasive wear;the main reason of fatiguepeeling off is crack appeared at the interface of phosphorus eutectic/matrix andgraphite/matrix.It is also discovered that the different kinds of wear help each other toaccelerate the wear of brake block.At last,the wear model of brake block is given outto explain its wear process. |
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| Keywords: | cast iron brake block wear failure mechanism |
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