A study of the mechanism of electrical discharge machining of particle reinforced metal matrix composites with concavo-convex electrode

J. W. Liu, Tai Man Yue, Z. N. Guo, Z. Y. Wan, G. Y. Liu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

A new concavo-convex electrode has been designed and employed. And an analysis of the electrical discharge machining (EDM) mechanism of a particulate reinforced metal matrix composite with this new electrode was conducted in this study. It was found that EDM with this new electrode can accelerate the debris discharge during machining so that it has a higher MRR compared to the case where a normal electrode was employed. Moreover, by studying the surface craters, it could confirm that discharge craters tend to connect together for the normal electrode. This indicates an abnormal arcing condition. Thus, the wire electrode was easy to be broken. While for the new electrode, separated craters were observed on the machined surface. This means a stable processing condition. The experiment results reveal the processing mechanism of EDM electrical discharge machining of MMCs by employing this new electrode.
Original languageEnglish
Title of host publicationMaterials Engineering for Advanced Technologies
Pages300-305
Number of pages6
DOIs
Publication statusPublished - 22 Jul 2011
Event2011 International Conference on Materials Engineering for Advanced Technologies, ICMEAT 2011 - Singapore, Singapore
Duration: 5 May 20116 May 2011

Publication series

NameKey Engineering Materials
Volume480-481
ISSN (Print)1013-9826

Conference

Conference2011 International Conference on Materials Engineering for Advanced Technologies, ICMEAT 2011
Country/TerritorySingapore
CitySingapore
Period5/05/116/05/11

Keywords

  • Electrical discharge machining
  • Electrode
  • Metal matrix composites
  • WEDM-HS

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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