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Advances in Materials Science and Engineering
Volume 2018, Article ID 2961879, 8 pages
Research Article

Study on Breakdown Probability of Multimaterial Electrodes in EDM

1School of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, China
2School of Engineering, Deakin University, Geelong, VIC 3220, Australia

Correspondence should be addressed to S. Zhang; nc.ude.utjd@fsz

Received 31 August 2017; Accepted 6 February 2018; Published 27 March 2018

Academic Editor: Frederic Dumur

Copyright © 2018 Y. Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


With the development of EDM technology, some multimaterial electrodes which have some special functions are regularly taking the place of traditional single material electrodes on some machining occasions and becoming widely used. In this paper, the influence of material on discharge breakdown in EDM with multimaterial electrodes is studied. A comparison model about material influence on discharge breakdown under both single discharge condition and continuous discharge condition is established, and the material property factors affecting the probability of discharge breakdown are also analyzed. Finally, a series of experiments are carried out to study the effects of different electrode materials on the discharge breakdown of EDM, a fitting formula of breakdown probability is presented, and the effectiveness of the comparison model is also verified by comparing with experimental results.