硬化钢磨削实验及再硬化分析  

Discussion on Grinding Experiments Performed on Hardened Steel 16MnCr5 (AISI 5115) and the Rehardened Zones

作　　者：吕长飞[1,2] 吴小玉[1] 郑继明[2] LV Changfei;WU Xiaoyu;ZHENG Jiming(School of Mechanical & Electrical Engineering,Guizhou Normal University,Guiyang Guizhou 550025,China;The Key Lab of Mechanical and Control Simulation,Guizhou Normal University,Guiyang Guizhou 550025,China)

机构地区：[1]贵州师范大学机械与电气工程学院,贵州贵阳550025 [2]贵州师范大学机械与控制仿真重点实验室,贵州贵阳550025

出　　处：《机床与液压》2019年第9期111-113,118,共4页Machine Tool & Hydraulics

基　　金：贵州省科学技术基金项目(黔科合LH字[2017]7350号);贵州省普通高等学校精密复合加工装备技术工程中心(黔教合KY字[2014]223)

摘　　要：对硬化钢16MnCr5(AISI 5115)进行了磨削实验和分析。实验结果显示磨削热对不同区域导致的材料改性取决于接触时间Δt和接触区最高温度T_(max),且在两个不同温度范围和接触时间里均观测到再次硬化区域。进一步分析表明,这些分开的磨削再硬化区的磨削时间和磨削温度范围对应于典型的残余奥氏体的改变范围。The results acquired during surface grinding experiments performed on hardened steel 16 MnCr5(AISI 5115) workpieces were discussed. The experimental results show material modifications induced by grinding heat on different zones during grinding process depend on the contact time Δt and the maximum contact zone temperature Tmax. In particular, it is observed that rehardened zones occur within two separated ranges of temperatures and contact times.Further analyses reveal that these separated time and temperature ranges correspond to significantly different mechanical loads as well as to varying retained austenite rates.

关 键 词：磨削 再硬化 接触区温度 接触时间 残余应力 

分 类 号：TG582[金属学及工艺—金属切削加工及机床]