理化检验-物理分册2025，Vol.61Issue(5)：75-77,3.DOI:10.11973/lhjy-wl240104
20CrMoA钢驱动齿轮断裂原因
Fracture reason of 20CrMoA steel drive gear
金辉 1杨青 1王小琴 1李政1
作者信息
- 1. 重庆赛力斯新能源汽车设计院有限公司,重庆 401331
- 折叠
摘要
Abstract
The fracture of a transmission gear occurred during the test run.The fracture reasons of 20CrMoA steel gear were analyzed by means of macroscopic observation,scanning electron microscope analysis,chemical composition analysis,metallographic examination and hardness test.The results show that the gear was characterized by overload fracture.The coarse martensite structure,high hardness and deep effective hardening layer reduced the mechanical properties of the material,which eventually led to the fracture of the gear.关键词
20CrMoA钢/齿轮/断裂/热处理工艺/有效硬化层/力学性能Key words
20CrMoA steel/gear/fracture/heat treatment process/effective hardening layer/mechanical property分类
金属材料引用本文复制引用
金辉,杨青,王小琴,李政..20CrMoA钢驱动齿轮断裂原因[J].理化检验-物理分册,2025,61(5):75-77,3.
