Failure Analysis on Fracture of a Flocking Spring for Vehicle Backdoor
摘 要
某汽车后背门起支撑作用的植绒弹簧在服役过程中发生断裂,通过断口宏微观形貌分析、化学成分分析、腐蚀产物能谱分析等方法对植绒弹簧断裂原因进行了分析。结果表明:该植绒弹簧断裂由在应力和腐蚀环境共同作用下发生的应力腐蚀开裂导致的;植绒弹簧发生应力腐蚀开裂的主要原因为其使用的润滑油中含有腐蚀性元素氯,建议在后续使用时选用正规品牌、有质量保证的润滑油。
Abstract
The flocking spring supporting the backdoor of a car fractured during its service. The fracture causes of the flocking spring were analyzed by macro and micro fracture morphology analysis, chemical composition analysis and corrosion product energy spectrum analysis. The results show that the flocking spring fracture was caused by stress corrosion cracking which occurred under the joint action of stress and corrosive environment. The main reason for the stress corrosion cracking of the flocking spring was that the used lubricating oil contained corrosive element chlorine. It is recommended to use regular brand and quality-assured lubricating oil for subsequent use.
中图分类号 TG304 DOI 10.11973/lhjy-wl201904017
所属栏目 质量控制与失效分析
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收稿日期 2018/5/10
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备注黄立飞(1982-),男,学士,主要从事机械装备失效分析工作,276382196@qq.com
引用该论文: HUANG Lifei. Failure Analysis on Fracture of a Flocking Spring for Vehicle Backdoor[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2019, 55(4): 286~288
黄立飞. 汽车后背门用植绒弹簧断裂失效分析[J]. 理化检验-物理分册, 2019, 55(4): 286~288
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参考文献
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