表面加工工艺对动车组车轴表面性能的影响  

Influence of Surface Processing Technology on Surface Performance of EMU Axle

作　　者：冯中立 蒲磊 杨文贤 彭金方[3] 王晓宁 朱旻昊 Feng Zhongli;Pu Lei;Yang Wenxian;Peng Jinfang;Wang Xiaoning;Zhu Minhao(CRRC Qingdao Sifang Co.,Ltd.,Qingdao,Shandong 266111,China;不详;State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University)

机构地区：[1]中车青岛四方机车车辆股份有限公司,山东省青岛市266111 [2]西南交通大学材料科学与工程学院 [3]西南交通大学轨道交通运载系统全国重点实验室,成都市610031

出　　处：《工具技术》2023年第7期105-111,共7页Tool Engineering

摘　　要：为探究不同表面处理工艺对动车组车轴表面性能的影响,以残余应力为主要性能评价依据,开展了7种表面处理工艺的车轴表面性能评价。针对标准动车组车轴卸荷槽部位,探究了不同目数砂纸打磨的车轴表面粗糙度和表面残余应力的关系,并确立最佳抛光参数。结果表明:滚压处理工艺可以形成较大的表面残余压应力,320目砂纸打磨与180目砂纸所形成表面残余应力大致相当;不同操作人员以及不同时段打磨抛光形成的表面残余应力存在差异;在180目砂纸与转速300r/min的抛光参数下进行抛光,可以保证车轴表面稳定的打磨性能。The purpose is to explore the influence of different surface treatments on the surface properties of EMU axles, the surface properties of EMU axles under seven surface treatments are evaluated based on the residual stress.Aiming at the unloading groove of standard EMU axle, the relationship between surface roughness and surface residual stress under different mesh sandpaper polishing is studied, and the best polishing process parameters are determined.The results show that the rolling process can form large surface residual stress, and the surface residual stress value of 320 mesh sandpaper grinding and 180 mesh sandpaper is approximately the same.There are differences in the surface residual stress formed by different operators and different periods of polishing.The stable grinding performance of axle surface can be guaranteed by polishing with 180 grit sandpaper and 300r/min.

关 键 词：卸荷槽 磨削 车削 滚压 打磨 抛光参数 

分 类 号：TG580.692[金属学及工艺—金属切削加工及机床] TH161.1[机械工程—机械制造及自动化]