金属热处理 ›› 2021, Vol. 46 ›› Issue (1): 235-238.DOI: 10.13251/j.issn.0254-6051.2021.01.043

• 测试与分析 • 上一篇    

台架试验中齿轮断齿的原因分析

何亮亮, 王元栋, 王梦梦, 侯圣文, 王妍   

  1. 陕西法士特齿轮有限责任公司,陕西 西安 710119
  • 收稿日期:2020-06-15 出版日期:2021-01-25 发布日期:2021-01-26
  • 作者简介:何亮亮(1988—),男,工程师,主要研究方向为金相检测和失效分析,E-mail:553621440@qq.com

Failure analysis of gear fracture cracking during bench test

He Liangliang, Wang Yuandong, Wang Mengmeng, Hou Shengwen, Wang Yan   

  1. Shaanxi Fast Gear Co.,Ltd.,Xi’an Shaanxi 710119,China
  • Received:2020-06-15 Online:2021-01-25 Published:2021-01-26

摘要: 采用显微组织分析,结合断口形貌分析、齿形齿向分析对齿轮断齿原因进行失效分析。结果表明,齿根圆角表层非马氏体组织深度不符合技术要求,但非本次断齿的主要原因。齿轮断齿根本原因为齿根次表面存在大尺寸氧化物夹杂,在试验持续受力过程中以该夹杂为疲劳源发生鱼眼状疲劳断裂。

关键词: 齿轮, 失效分析, 夹杂物, 鱼眼状疲劳断裂

Abstract: Causes of gear fracture failure were analyzed by means of metallographic analysis,fracture analysis,tooth profile and lead analysis.The results show that though the surface unqualified non-martensite structure of the root was observed,it is not the main cause of this gear fracture.The main reason is the presence of large-scale oxide inclusion on the root subsurface of gear teeth,which is the fatigue source under the continuous stress during bench test,and leads to the fish-eye type fatigue cracking.

Key words: gear, failure analysis, inclusion, fish-eye type fatigue cracking

中图分类号: