| 4102柴油机喷油泵弹簧断裂原因分析 |
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| 引用本文： | 刘亚平,俞向前. 4102柴油机喷油泵弹簧断裂原因分析[J]. 理化检验(物理分册), 2007, 43(9): 483-485 |
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| 作者姓名： | 刘亚平 俞向前 |
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| 作者单位： | 无锡威孚精密机械制造有限公司,无锡,214028;无锡威孚精密机械制造有限公司,无锡,214028 |
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| 摘 要： | 采用宏观与微观断口检验、化学成分分析、硬度测定以及显微组织观察等方法对断裂的柴油机喷油泵的弹簧进行了分析.结果表明,弹簧的断裂为沿晶脆性断裂,引起的原因主要是意外局部加热产生的高温导致材料组织发生异常所致.
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| 关 键 词： | 柴油喷油泵 弹簧 脆断 失效分析 |
| 文章编号： | 1001-4012（2007）09-0483-03 |
| 收稿时间： | 2007-04-16 |
| 修稿时间： | 2007-04-16 |
FAILURE REASON ANALYSIS ON SPRING FRACTURE OF 4102 DIESEL ENGINE OIL PUMP |
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| LIU Ya-ping,YU Xiang-qian. FAILURE REASON ANALYSIS ON SPRING FRACTURE OF 4102 DIESEL ENGINE OIL PUMP[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2007, 43(9): 483-485 |
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| Authors: | LIU Ya-ping YU Xiang-qian |
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| Affiliation: | Wuxi Weifu Precision Manufacturing Co. Ltd , Wuxi 214028, China |
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| Abstract: | The fracture of a failed spring of diesel engine oil pump was investigated by fracture observation, chemical composition analysis, hardness testing and metallographic examination. The results showed that the crack is mostly along the grain boundary. The reason lies in the abnormal microstrueture of the failed spring caused by accidently high temperature heating. |
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| Keywords: | Diesel engine oil pump Spring Brittle fracture Failure analysis |
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