推力盘类轴承零件热处理工艺改进  

Improvement of heat treatment process of thrust disc bearing parts

作　　者：贾玉鑫 孙艳平 王姗姗[2] 王秉楠 胡敬原 Jia Yuxin;Sun Yanping;Wang Shanshan;Wang Bingnan;Hu Jingyuan(Luoyang Bearing Science and Technology Co.,Ltd.,Luoyang Henan 471000,China;Luoyang Bearing Research Institute Co.,Ltd.,Luoyang Henan 471000,China)

机构地区：[1]洛阳轴研科技有限公司,河南洛阳471000 [2]洛阳轴承研究所有限公司,河南洛阳471000

出　　处：《金属热处理》2024年第12期99-102,共4页Heat Treatment of Metals

基　　金：洛阳市重大科技创新专项(2201006A)。

摘　　要：某型号推力盘球(圆锥)轴承直径较大,在渗碳淬火热处理过程中存在表面软点、翘曲变形超差等问题,导致产品返修或报废。针对这种现象,对推力盘工件表面产生软点,翘曲变形超差的原因进行了分析,提出了合理提高表面碳浓度、提高二次淬火温度、增加冷处理、改进热处理工装等措施。工艺改进后,推力盘工件表面屈氏体组织合格,硬度控制在58~63 HRC之间,翘曲变形控制在0.8 mm以内,解决了表面软点现象,控制了翘曲变形,提高了该类型产品的一次交检合格率,满足了生产需要。In view of the problems such as surface soft spots and warping deformation in the process of carburizing and quenching heat treatment of a type of thrust disc ball(tapered) bearing with large diameter resulted in product repair or scrapping, the causes of soft spots and excessive warpage deformation on the surface of the thrust disc workpiece are analyzed, measures such as reasonably increasing the surface carbon concentration, increasing the temperature of the second quenching, adding cold treatment, and improving the heat treatment fixture were proposed. After the process improvement, the surface troostite of the thrust disc workpiece is qualified, the hardness is controlled between 58 and 63 HRC, and the warping deformation is controlled within 0.8 mm, which solves the problem of surface soft spots, controls the warping deformation, and improves the first-time acceptance rate of this type of product, meeting the production needs.

关 键 词：推力盘 渗碳淬火 冷处理 变形 

分 类 号：TG157[金属学及工艺—热处理]