淬回火工艺对Cronidur30钢组织及性能的影响  

Effects of Quenching and Tempering Process on Microstructure and Properties of Cronidur30 Steel

作　　者：王明杰 王姗姗[5] 宋华华 刘汇河 杨晨星 WANG Mingjie;WANG Shanshan;SONG Huahua;LIU Huihe;YANG Chenxing(Luoyang Bearing Group Co.,Ltd.,Luoyang 471039,China;Key Laboratory of Aviation Precision Bearings,Luoyang 471039,China;Henan High-End Bearing Industry Research Institute,Luoyang 471039,China;Henan Technology Innovation Center of Bearing,Luoyang 471039,China;Luoyang Bearing Research Institute Co.,Ltd.,Luoyang 471039,China)

机构地区：[1]洛阳轴承集团股份有限公司,河南洛阳471039 [2]航空精密轴承国家重点实验室,河南洛阳471039 [3]河南省高端轴承产业研究院,河南洛阳471039 [4]河南省轴承技术创新中心,河南洛阳471039 [5]洛阳轴承研究所有限公司,河南洛阳471039

出　　处：《轴承》2024年第8期48-52,共5页Bearing

摘　　要：利用扫描电镜、摩擦磨损试验机和X射线衍射仪等研究了淬火温度、冷处理温度和回火温度对Cronidur30钢的硬度、残余奥氏体含量以及摩擦磨损性能和耐腐蚀性的影响。结果表明:淬火温度为1 025,1 060℃时,回火态试样硬度均不低于59 HRC,1 025℃淬火试样的残余奥氏体含量略低且组织更加均匀细小;淬火温度为1 025℃时,-75和-196℃这2种冷处理温度对试样硬度和残余奥氏体含量影响的差别不大;淬火温度1 025℃,冷处理温度-75℃时,155,480℃回火温度下试样的硬度均高于58 HRC,155℃回火后试样的减摩性优于480℃,耐磨性则略低;随着回火温度升高,试样的耐腐蚀性下降,回火温度550℃时试样的耐腐蚀性最差。The effects of quenching temperature,cold treatment temperature and tempering temperature on hardness,residual austenite content,friction and wear properties and corrosion resistance of Cronidur30 steel are studied by scanning electron microscopy,friction and wear tester and X-ray diffractometer.The results show that when the quenching temperature is 1025 and 1060℃,the hardness of tempered samples is not less than 59 HRC,the residual austenite content of samples quenched at 1025℃is slightly lower and the microstructure is more uniform and fine;when the quenching temperature is 1025℃,the effect of two cold treatment temperatures of-75℃and-196℃on hardness and residual austenite content of samples is not much different;when the quenching temperature is 1025℃and the cold treatment temperature is-75℃,the hardness of samples tempered at 155℃and 480℃is higher than 58 HRC,the anti-friction property of samples tempered at 155℃is better than that of samples tempered at 480℃,and the wear resistance is slightly lower;with the increase of tempering temperature,the corrosion resistance of samples decreases,and the corrosion resistance of samples is the worst when the tempering temperature is 550℃.

关 键 词：滚动轴承 热处理 淬火 回火 硬度 摩擦磨损 

分 类 号：TH133.33[机械工程—机械制造及自动化] TG156.3[金属学及工艺—热处理]