Influence of high frequency pulse on electrode wear in micro-EDM  

作　　者：Xiao-peng LI Yuan-gang WANG Fu-ling ZHAO Meng-hua WU Yu LIU 

机构地区：[1]Dalian University of Technology [2]Dalian University [3]Dalian Jiaotong University

出　　处：《Defence Technology（防务技术）》2014年第3期316-320,共5页Defence Technology

基　　金：the National Natural Science Foundation of China for financially supporting this research through project No.51005027

摘　　要：An electromagnetic coupling mathematical model is established by finite element method and is verified by the contrastive experiments of copper matrix Ni-TiN cylindrical coating electrode,copper electrode and Cu50 W electrode.The wear mechanism of Ni-TiN/Cu composite electrode in the case of high-frequency pulse current is studied,and the influence of the fluctuation frequency of discharge current on electrode wear in micro-EDM is found out.Compared with the electrode made from homogeneous material,the high frequency electromagnetic properties of Ni-TiN composite layer can be used effectively to inhibit the effect of high frequency pulse on the electrode and improve the distribution trend of current density.An electromagnetic coupling mathematical model is established by finite element method and is verified by the contrastive experiments of copper matrix NieTiN cylindrical coating electrode, copper electrode and Cu50W electrode. The wear mechanism of NieTiN/Cu composite electrode in the case of high-frequency pulse current is studied, and the influence of the fluctuation frequency of discharge current on electrode wear in micro-EDM is found out. Compared with the electrode made from homogeneous material, the high frequency electromagnetic properties of NieTiN composite layer can be used effectively to inhibit the effect of high frequency pulse on the electrode and improve the distribution trend of current density.☆Copyright . 2014, China Ordnance Society. Production and hosting by Elsevier B.V. All rights reserved.

关 键 词：HIGH-FREQUENCY PULSE ELECTROMAGNETIC coupling model NieTiN/Cu composite ELECTRODE ELECTRODE WEAR MICRO-EDM 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]