| 活塞销失效原因分析 |
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| 引用本文： | 卢柳林,杨广林,王祖勇,张平. 活塞销失效原因分析[J]. 理化检验(物理分册), 2007, 43(10): 528-531,534 |
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| 作者姓名： | 卢柳林 杨广林 王祖勇 张平 |
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| 作者单位： | 东风汽车有限公司,工艺研究所,十堰,442001;信阳银光机械有限责任公司,信阳,464000 |
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| 摘 要： | 某发动机活塞销失效导致发动机损毁.采用磁粉探伤、宏微观断口分析、化学成分、金相组织及硬度分析等方法对失效的活塞销进行了分析,同时还对活塞销在服役过程中的应力状态进行了有限元模拟计算.结果表明,导致活塞销疲劳断裂的原因是活塞销端面存在磨削裂纹.
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| 关 键 词： | 失效分析 活塞销 疲劳断裂 磨削裂纹 |
| 文章编号： | 1001-4012（2007）10-0528-04 |
| 收稿时间： | 2006-12-12 |
| 修稿时间： | 2006-12-12 |
FAILURE ANALYSIS OF THE PISTON PIN |
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| LU Liu-lin,YANG Guang-lin,WANG Zu-yong,ZHANG Ping. FAILURE ANALYSIS OF THE PISTON PIN[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2007, 43(10): 528-531,534 |
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| Authors: | LU Liu-lin YANG Guang-lin WANG Zu-yong ZHANG Ping |
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| Affiliation: | 1. Material and Technology Institute of DFL, Shiyan 442001, China; 2. Xinyang Yinguang Mechanical Co. Ltd. , Xinyang 464000, China |
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| Abstract: | A engine was destroyed resulting from failure of the piston pin. The failure reason of piston pin have been studied by the observation of the morphology, microstructure examination, nondestructive testing, chemical composition analysis, hardness testing and finite element simulation. The results showed that the piston pin was failed by fatigue fracture, which was caused by grinding cracks. |
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| Keywords: | Failure analysis Piston pin Fatigue fracture Grinding crack |
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