渗氮预处理对GCr15轴承钢性能的影响  

Effect of Nitriding Pretreatment on Properties of Bearing Steel GCr15

作　　者：王浩[1,2,3] 叶健熠[1,2,3] 薛文方 王鑫[1,2,3] 冯江[1,2,3] 

机构地区：[1]洛阳轴研科技股份有限公司,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》2016年第7期37-38,43,共3页Bearing

摘　　要：研究了渗氮预处理对GCr15轴承套圈淬火组织、表面硬度、渗氮硬化层硬度的影响。结果表明:渗氮预处理后,套圈表面形成0.5 mm左右的硬化层,淬火后在不同回火温度下,套圈硬化层硬度均高于未渗氮套圈,渗氮预处理工艺可有效提高轴承钢套圈的表面硬度和回火稳定性。The effect of nitriding pretreatment on quenching microstructure, surface hardness and hardness of nitriding hardened layer of rings of bearings made of GCr15 are studied. The results show that the surface of rings forms hardened layer of about 0. 5mm after nitriding pretreatment, the hardness of hardened layer of rings is higher than rings without nitriding under different tempering temperatures after quenching. The nitriding pretreatment process can effectively im- prove surface hardness and tempering stability of rings made of bearing steel.

关 键 词：角接触球轴承 GCR15 渗氮预处理 表面硬度 硬度梯度 回火稳定性 

分 类 号：TH133.331[机械工程—机械制造及自动化] TG115[金属学及工艺—物理冶金]