武汉工程职业技术学院学报2023，Vol.35Issue(4)：4-7,4.
减速器齿轮轴断裂失效分析
Fracture Analysis of the Gear Shaft of the Reducer
闻臻 1王志奋 1刘冬 1贾雁2
作者信息
- 1. 武钢有限技术中心 湖北 武汉 430080
- 2. 武钢有限热轧厂 湖北 武汉 430080
- 折叠
摘要
Abstract
During the operation of the transport belt steering reducer,its gear shaft might break.The reasons of the fracture were analyzed through composition analysis,mechanical performance testing with the aid of macroscopic and microscopic metallographic observation and scanning electron microscopy analy-sis.The results show that the fracture mode of the gear shaft was rotational fatigue fracture,and there was stress concentration at the R-angle position of the connection,between the moving shaft and the mo-tor.During operation,it might cause the initiation and expansion of fatigue cracks,ultimately leading to the fracture of the gear shaft.It is proposed that ultrasonic peening strengthening technology can be used to perform ultrasonic peening on the R corner of the gear shaft to form a prefabricated compressive stress field and slow down the initiation of fatigue cracks,and thus the service life can be extended.关键词
齿轮轴/断裂/扫描电镜/超声冲击强化Key words
gear shaft/fracture/SEM/ultrasonic peening strengthen分类
矿业与冶金引用本文复制引用
闻臻,王志奋,刘冬,贾雁..减速器齿轮轴断裂失效分析[J].武汉工程职业技术学院学报,2023,35(4):4-7,4.
