| 汽车冲压模具弹簧的失效分析 |
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| 引用本文： | 李细锋,申昱,胡广洪.汽车冲压模具弹簧的失效分析[J].模具技术,2010(4):34-36,54. |
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| 作者姓名： | 李细锋 申昱 胡广洪 |
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| 作者单位： | 1. 上海交通大学,模具CAD国家工程研究中心,上海,200030
2. 上海模具技术研究所有限公司,上海,200030;上海申模计算机系统集成有限公司,上海,200030 |
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| 基金项目： | 徐汇区科委公共技术平台，青浦区科技型中小企业技术创新基金项目 |
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| 摘 要： | 为了寻找某一汽车零件冲压模具弹簧的失效原因,对弹簧断口部位进行了化学成分、金相组织、硬度、断口SEM扫描等测试。检验的结果表明,失效是由于在高交变应力作用下,弹簧丝在内侧表面附近区域形成了疲劳裂纹源,并最终导致弹簧早期疲劳断裂。
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| 关 键 词： | 弹簧 失效分析 疲劳 |
Failure analysis of the spring in automotive stamped die |
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| LI Xi-feng,SHEN Yu,HU Guang-hong.Failure analysis of the spring in automotive stamped die[J].Die and Mould Technology,2010(4):34-36,54. |
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| Authors: | LI Xi-feng SHEN Yu HU Guang-hong |
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| Abstract: | In order to find the failure cause of a valve spring in an automotive panel stamping die,the fracture region on the spring is examined by chemical composition analysis,metallography,hardness test and SEM.The results showed that the fatigue crack initiation caused by high alternative stress appears in the inner surface of the spring and the propagation of the cracks results in early fatigue fracture of the spring. |
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| Keywords: | spring failure analysis fatigue |
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