Paper Title:

Powder Mixed near Dry Electrical Discharge Machining

Periodical Advanced Materials Research (Volume 500)
Main Theme Advances in Materials Processing X
Edited by Chuanzhen Huang, Hongtao Zhu, Jun Wang and Xiaoping Li
Pages 253-258
DOI 10.4028/www.scientific.net/AMR.500.253
Citation Xue Bai et al., 2012, Advanced Materials Research, 500, 253
Online since April, 2012
Authors Xue Bai, Qin He Zhang, Tian Tian Li, Jian Hua Zhang
Keywords Electrical Discharge Machining (EDM), Material Removal Rate (MRR), Mechanism, Three-Phase Dielectric Medium
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Abstract

Powder mixed near dry electrical discharge machining (PMND-EDM), which uses gas-liquid-powder mixture as three phase dielectric medium to remove materials, is proposed. Compared with dry EDM, much higher material removal rate (MRR) is achieved in PMND-EDM. The mechanism of PMND-EDM is analyzed and reasons for its MRR improvement are illustrated. Comparative experiment is done in compressed air and three phase dielectric medium, respectively. MRR is calculated. And discharge voltage waveforms are obtained by oscilloscope. It is shown that three phase dielectric medium can improve MRR effectively.