摘要
采用扫描电镜、光学显微镜、火花放电原子发射光谱仪、定氢仪以及布氏硬度计对重型汽车后桥主动齿轮失效原因进行了分析。结果表明:失效齿轮的各项性能指标均满足标准要求,氢含量较低,失效原因主要是由于预紧力过大致使在齿轮轴尾部螺纹空刀槽与花键连接处应力集中导致的延迟断裂失效。
Failure reasons of a failed gear of heavy truck rear axle were analyzed by using scanning electron microscope,optical microscope,spark discharge atomic emission spectrometer,hydrogen determination instrument and Brinell hardness tester.The results show that all the performance indexes of the failure gear meet the requirements of the standard,and the hydrogen content is relatively low.The main reason for the failure is the delayed fracture failure caused by the stress concentration at the connection between the hollow groove of the screw thread and the spline at the end of the gear shaft.
作者
程源
胡芳忠
胡乃悦
汪开忠
王良林
金国忠
郝震宇
Cheng Yuan;Hu Fangzhong;Hu Naiyue;Wang Kaizhong;Wang Lianglin;Jin Guozhong;Hao Zhenyu(Cheqiao Branch,Anhui Hualing Automobile Co.,Ltd.,Ma'anshan Anhui 243000,China;Technical Center,Maanshan Iron&Steel Co.,Ltd.,Ma'anshan Anhui 243000,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2021年第2期218-222,共5页
Heat Treatment of Metals
基金
工信部工业强基项目。
作者简介
程源(1985-),男,工程师,主要研究方向为汽车车桥产品开发,E-mail:chengyuan4698@163.com;通讯作者:胡乃悦,助理工程师,硕士,E-mail:1392988022@qq.com。
