不同淬回火组织GCr15轴承钢球的性能对比分析  

Comparative Analysis on Properties of Bearing Steel Balls Made of GCr15 with Different Quenching and Tempering Microstructures

作　　者：欧亮龙[1,2,3] 叶健熠 冯继伟[1,2,3] 夏谦 OU Lianglong;YE Jianyi;FENG Jiwei;XIA Qian(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战略联盟,河南洛阳471039

出　　处：《轴承》2019年第2期40-42,共3页Bearing

摘　　要：对GCr15钢球实施马氏体淬火后常规回火、240℃高温回火和等温贝氏体淬火3种热处理工艺,分别得到常规马氏体、高温回火马氏体和下贝氏体3种组织,试验研究了这3种组织的性能。结果表明,10 mm的GCr15钢球,高温回火马氏体组织与下贝氏体组织的压碎载荷值相当,且明显高于常规马氏体组织的压碎载荷值;下贝氏体组织的抗回火性能明显优于常规马氏体组织的抗回火性能。The conventional martensite,high temperature tempering martensite and lower bainite are obtained respectively after conventional tempering after martensite quenching,high temperature tempering under 240℃and isothermal bainite quenching of steel balls made of GCr15.The properties of three structures are studied experimentally.The results show that the crushing load of high temperature tempering martensite structure is equivalent to that of lower bainite structure,and which is higher obviously than that of conventional martensite structure for steel balls made of GCr15 with a diameter of 10 mm.The tempering resistant performance of lower bainite structure is better than that of conventional martensite structure.

关 键 词：滚动轴承 GCR15钢 常规马氏体 高温回火马氏体 下贝氏体 压碎载荷 抗回火性能 

分 类 号：TH133.33[机械工程—机械制造及自动化] TG156[金属学及工艺—热处理]