新型耐电蚀磨料电极电化学放电加工MMC实验研究  

Experimental study on electrochemical discharge machining of MMCs with a new type of electrical corrosion resistance abrasive electrode

作　　者：邓子杰 林浩然 张凤林[1] 郭金保 蔡鹏程 刘江文[1] DENG Zijie;LIN Haoran;ZHANG Fenglin;GUO Jinbao;CAI Pengcheng;LIU Jiangwen(School of Electro-Mechanical Engineering,Guangdong University of Technology,Guangzhou 510006,CHN)

机构地区：[1]广东工业大学机电工程学院,广东广州510006

出　　处：《制造技术与机床》2024年第5期84-93,共10页Manufacturing Technology & Machine Tool

摘　　要：针对采用传统的铜基磨料电极电化学放电加工颗粒增强金属基复合材料(PR-MMCs)工具电极快速损耗的问题,文章提出一种采用熔点高、硬度高的钨铜作为磨料电极的基体材料,探索一种基于钨铜基磨料电极的高速磨削辅助电化学放电加工PR-MMCs的新方法。铜电极、铜基磨料电极和钨铜基磨料电极分别被用于铝基碳化硅(SiCp/Al)复合材料的加工对比实验。研究结果表明,相比铜电极和传统的铜基磨料电极,新型的钨铜基磨料电极在加工SiCp/Al中展现出更好的耐电蚀性能和加工效率:钨铜基磨料电极的电极相对损耗率(TWR)均低于铜电极和传统铜基磨料电极的电极相对损耗率,最低可达铜电极的1.1%和传统铜基磨料电极的28.8%;钨铜磨料电极的材料去除效率(MRR)均高于铜电极和传统铜基磨料电极,最高可达铜电极的8.0倍和传统铜基磨料电极的2.5倍。To solve the problem of rapid electrode loss of particle reinforced metal matrix composite(PR-MMCs)tool by electrochemical discharge machining using traditional Cu-based abrasive electrode.In this paper,a CuW alloy with high melting point and high hardness was proposed as the matrix material of the abrasive electrode,and a new method of high-speed grinding-aided electrochemical discharge machining(G-ECDM)of PR-MMCs using CuW abrasive electrode was explored.The conventional electrode,Cu-based abrasive electrode and CuW-based abrasive electrode were used to machine SiCp/Al.The results show that compared with the traditional electrode and Cu-based abrasive electrode,the CuW-based abrasive electrode showed better corrosion resistance and efficiency in the machining of SiCp/Al.The TWR of CuW-based abrasive electrode is lower than that of Cu electrode and traditional Cu-based abrasive electrode,and the lowest TWR can reach 1.1%of Cu electrode and 28.8%of traditional Cu-based abrasive electrode.MRR of CuW-based abrasive electrode is higher than that of Cu electrode and traditional Cu-based abrasive electrode,up to 8.0 times of Cu electrode and 2.5 times of traditional Cu-based abrasive electrode.

关 键 词：金属基复合材料 G-ECDM 钨铜磨料电极 电极相对损耗率 材料去除率 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]