8Cr4Mo4V钢球压碎载荷不合格的原因及返修  

Reason and repair of crushing load test non-compliance of steel ball made of 8Cr4Mo4V

作　　者：单琼飞 叶健熠[1,2] 高元安 王鑫[1,2] Shan Qiongfei;Ye Jianyi;Gao Yuanan;Wang Xin(Luoyang Bearing Research Institute Co.Ltd.,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]滚动轴承产业技术创新战略联盟,河南洛阳471039

出　　处：《哈尔滨轴承》2020年第4期30-32,共3页Journal of Harbin Bearing

摘　　要：对直径为φ12.7mm的8Cr4Mo4V(Cr4Mo4V)钢球压碎载荷不合格的原因进行了分析与返修。结果表明,严重的混晶组织、原材料缩孔残余是造成钢球压碎载荷不合格的主要原因。混晶组织经返修后,钢球的压碎载荷等热处理性能指标符合标准要求。The reasons for crushing load test non-compliance of the steel ball made of 8Cr4Mo4V(Cr4Mo4V)with diameter of 12.7mm were analyzed and repaired.The results show that the serious miscible microstructure and raw materials residual shrinkage cavity are the main reasons for the crushing load test non-compliance of steel ball.After the miscible microstructure repaired,the heat treatment performance of steel ball such as crushing load meet the standard requirements.

关 键 词：8Cr4Mo4V钢球 压碎载荷 不合格 返修 

分 类 号：TH133.3[机械工程—机械制造及自动化] TG142.7[一般工业技术—材料科学与工程]