特大型四列圆柱滚子轴承支柱保持架失效原因分析及改进措施  

Cause Analysis and Improvement Measures for Failure of Pillar Cages in Extra-Large Size Four Row Cylindrical Roller Bearings

作　　者：张德颖[1,2,3] 赵广炎 史松霞[1,2,3] 魏闯 赵利兰[1,2,3] ZHANG Deying;ZHA0 Guangyan;SHI Songxia;WEI Chuang;ZHA0 Lilan(Luoyang Bearing Research Institute Co.,Ltd.,Luoyang 471039,China;Henan Key Laboratory of High Performance Bearing Technology,Luoyang 471039,China;Strategic Alliance for Technology Innovation in Rolling Bearing Industry,Luoyang 471039,China)

机构地区：[1]洛阳轴承研究所有限公司,河南洛阳471039 [2]河南省高性能轴承技术重点实验室,河南洛阳471039 [3]滚动轴承产业技术创新联盟,河南洛阳471039

出　　处：《轴承》2018年第9期22-25,共4页Bearing

摘　　要：针对特大型四列圆柱滚子轴承支柱保持架在使用过程中出现的早期失效问题,通过宏观检查、断口处及磨损部分的扫描电子显微镜检测,以及对轴承工作过程中的受力和运动模拟分析,得出结果:支柱焊接质量不稳定,在反复的冲击载荷作用下,支柱焊接端缺陷处的断裂和螺纹端的疲劳断裂是导致轴承失效的主要原因,并据此提出了改善焊接支柱保持架质量的设计方法和工艺控制措施。For early failure of pillar cages in extra-large size four row cylindrical roller bearings during use,examination,scanning electric microscopy examination of fracture section and war part,load and motion simulation analysis of the bearings during operating process are adopted.The failure of the bearings is fracture at threaded end and fracture at defect of pillar welding end under repeated impact load due to instability of pillar welding quality.The design method and process control measure are proposed to improving quality of welding pillar cages.

关 键 词：特大型圆柱滚子轴承 支柱保持架 失效分析 焊接缺陷 疲劳裂纹 

分 类 号：TH133.332[机械工程—机械制造及自动化] TG58Q.6[金属学及工艺—金属切削加工及机床]