淬硬轴承钢磨削温度及其热损伤研究  

Research on the Grinding Temperature and Thermal Damage of Hardened Bearing Steel

作　　者：孙鹏程 SUN Pengcheng(School of Automotive and Mechanical Engineering,Changsha University of Science&Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学汽车与机械工程学院,湖南长沙410114

出　　处：《河南科技》2022年第11期34-38,共5页Henan Science and Technology

摘　　要：为了研究磨削温度对淬硬GCr15轴承钢磨削质量的影响,利用可磨式K型热电偶来测量磨削温度,观察磨削工件的表面状态与截面组织,探究磨削温度的变化规律和其对工件加工质量的影响。研究表明,磨削切深对磨削温度有着显著的影响,过高的磨削温度会使工件表面产生严重的烧伤现象,工件表面粗糙度急剧增大。当磨削温度超过材料相变温度时,磨削工件表面和亚表面还会产生大量的白层,从而严重影响工件表面的磨削加工质量。In order to study the effect of grinding temperature on grinding quality of hardened GCr15 bearing steel,the grinding temperature was measured by grindable K-type thermocouple,the surface state and section structure of the workpiece were observed,and the changing rule of grinding temperature and its influence on workpiece machining quality were revealed.The results show that the cutting depth has a significant effect on grinding temperature.High grinding temperature causes serious burning on the workpiece surface,the roughness of the workpiece surface increases sharply.When the grinding temperature exceeds the material transformation temperature, a large number of white layers are generated on the grinding surface and sub-surface of the workpiece,which seriously affect the grinding quality of the workpiece surface.

关 键 词：淬硬轴承钢 磨削 磨削温度 热损伤 表面粗糙度 

分 类 号：TG580[金属学及工艺—金属切削加工及机床]