| LIA80汽车发动机连杆断裂失效分析 |
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| 引用本文： | 李洪,崔兰芳,董凤堂. LIA80汽车发动机连杆断裂失效分析[J]. 汽车零部件, 2012, 0(4): 59-60,62 |
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| 作者姓名： | 李洪 崔兰芳 董凤堂 |
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| 作者单位： | 烟台市产品质量监督检验所,国家机动车配件产品监督检验中心,山东烟台260000 |
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| 摘 要： | 采用化学成分分析、金相组织检验，扫描电镜观察等方法对断裂的LL480汽车发动机连杆进行了分析。结果表明：连杆的断裂属于低应力疲劳断裂。连杆小头孔表面的切削刀痕是导致连杆断裂的主要原因。
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| 关 键 词： | 连杆 低应力疲劳断裂 切削刀痕 |
The Fracture Failure Analysis of the Automobile Connecting Rod |
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| LI Hong , CUI Lanfang , DONG Fengtang. The Fracture Failure Analysis of the Automobile Connecting Rod[J]. Automobile Parts, 2012, 0(4): 59-60,62 |
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| Authors: | LI Hong CUI Lanfang DONG Fengtang |
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| Affiliation: | (National Center of Quality Supervision and Inspection for Automobile Fittings of China, Yantai Products Quality Supervision and Testing Institute, Yantai Shandong 260000, China) |
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| Abstract: | The fracture reasons for the LIA8Oconnecting rod were analyzed by chemical analysis, metallographic examination and SEM observation. The results show that the fracture of the LL480 connecting rod is due to low-stress fatigue fracture. The cutter marks of the surface of the connecting rod small end hole are the main reasons for the fatigue fracture. |
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| Keywords: | Connecting rod Low-stress fatigue fracture Cutter marks |
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