齿轮轴的失效分析
Failure Analysis on the Gear Shaft
朱芸怡1
作者信息
- 1. 无锡市检验检测认证研究院,江苏 无锡 214000
- 折叠
摘要
FM8T钢齿轮轴在使用中早期开裂.对开裂的齿轮轴进行了断口分析、金相检验、硬度测定和化学成分分析.结果表明:FM8T钢齿轮轴有效硬化层深度偏浅,且表层有非马氏体组织,承载性能下降;有严重的非金属夹杂物,力学性能较差.这两个因素导致了齿轮轴扭转疲劳开裂.
Abstract
The FM8T steel gear shaft cracked in early stage of service.The fracture analysis,metallographic examination,hardness measurements and chemical composition analysis were carried out on the cracked gear shaft.The results demonstrated that the FM8T steel gear shaft exhibited insufficient effective hardening depth and non-martensitic structure in case therefore less load-bearing ability,and had severe nonmetallic inclusions therefore poor mechanical properties.It was these two factors that resulted in torsional fatigue cracking of the gear shaft.
关键词
齿轮轴/疲劳开裂/非金属夹杂物Key words
gear shaft/fatigue cracking/non-metallic inclusion引用本文复制引用
出版年
2024
NETL
NSTL
万方数据