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。
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.
作者
仪欣
申明月
董智鹏
王宇
YI Xin;SHEN Mingyue;DONG Zhipeng;WANG Yu(Wafangdian Bearing Group National Bearing Engineering Technology Research Center Co.,Ltd.,Wafangdian 116300,China;Institute of Transmission Machinery Bearings of ZWZ Bearing Group Co.,Ltd.,Wafangdian 116300,China;Manufacturing Process and Equipment Research and Design Center of ZWZ Bearing Group Co.,Ltd.,Wafangdian 116300,China;Special Precision Bearing Manufacture of ZWZ Bearing Group Co.,Ltd.,Wafangdian 116300,China)
出处
《哈尔滨轴承》
2024年第2期39-41,共3页
Journal of Harbin Bearing
关键词
氧化
脱碳层
表面加工质量
化学成分
金相组织
oxidation
decarburized layer
surface processing quality
chemical composition
metallographic structure
作者简介
仪欣(1989—),女,工程师。
