Modern Manufacturing Engineering ›› 2017, Vol. 446 ›› Issue (11): 5-8.doi: 10.16731/j.cnki.1671-3133.2017.11.002

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Experimental study of particle reinforced metal matrix composite of electrical discharge machining by pentagonal hollow electrode

Chen Shaoguo, Yu Zhaoqin, Yang Xiaoxiao, Peng Liqiang, Guo Zhongning, Liu Jiangwen   

  1. School of Mechanical and Electrical Engineering,Guangdong University of Technology,Guangzhou 510006,China
  • Received:2016-11-10 Online:2017-11-20 Published:1900-01-01

Abstract: An polygonal tube electrode Electrical Discharge Machining (EDM) method is developed to improve the performance of conventional EDM process in machining particulate reinforced Metal Matrix Composites(MMCs) and the problem of hollow electrode chip during the EDM.Make a contrastive research on machining efficiency of particulate reinforced MMCs through two hollow electrodes with different cross sections,such as the round and the pentagon.In addition,orthogonal experiment is adapted to study particulate reinforced MMCs with different processing parameters on the efficiency to obtain optimal parameters for polygon electrode EDM.The experimental results show that the efficiency of machining such materials by the cross-section of pentagonal hollow electrode is higher than the circular hollow electrode,the maximum processing time is reduced by 51.8%;the optimum combination of orthogonal experiment is the pulse on time (32ms),the duty cycle(2 ∶3),and the peak current(7A).

Key words: particle reinforced metal matrix composites, polygonal tube electrode, Electrical Discharge Machining(EDM)

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