圆锥滚子轴承内圈大挡边碎裂失效分析
Failure Analysis on Cracking of Large Rib of Tapered Roller Bearing Inner Rings
仪欣 1申明月 2董智鹏 3王宇4
作者信息
- 1. 瓦房店轴承集团国家轴承工程技术研究中心有限公司,辽宁 瓦房店 116300
- 2. 瓦房店轴承集团传动机械轴承研究所,辽宁 瓦房店 116300
- 3. 瓦房店轴承集团制造工艺及设备研发中心,辽宁 瓦房店 116300
- 4. 瓦房店轴承集团特种精密轴承制造有限公司,辽宁 瓦房店 116300
- 折叠
摘要
针对某型圆锥滚子轴承内圈大挡边碎裂的问题,采用化学成分分析、金相组织检验及洛氏硬度检验等技术对失效原因进行了分析.结果表明:内圈大挡边油沟表面加工质量较差导致该处应力集中因素增大,该处表面的氧化和脱碳使其强度降低、缺口敏感性增加,最终导致内圈大挡边碎裂.
Abstract
In response to large rib cracking in the inner ring of a tapered roller bearing roller,the causes of bearing failure have been determined by means of chemical composition analysis,metallographic structure examination and Rockwell hardness inspection.The results show that the oil groove of inner ring large rib has poor surface quality that increases the stress concentration factor.Surface oxidation and decarburization of oil groove reduce its strength,increase its notch sensitivity,eventually cause the inner ring large rib to crack.
关键词
氧化/脱碳层/表面加工质量/化学成分/金相组织Key words
oxidation/decarburized layer/surface processing quality/chemical composition/metallographic structure引用本文复制引用
出版年
2024
NETL
NSTL
万方数据