Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 184, Issue 1-3, Pages 32-41Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2006.10.046
Keywords
electric discharge machining; surface roughness; material removal rate; tool wear rate
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Powder mixed electric discharge machining (PMEDM) is one of the recent innovations for the enhancement of capabilities of EDM process. In PMEDM, the electrically conductive powder is mixed in the dielectric of EDM, which reduces the insulating strength of the dielectric fluid and increases the spark gap between the tool and workpiece. As a result, the process becomes more stable, thereby, improving the material removal rate (MRR) and surface finish. Moreover, the surface develops high resistance to corrosion and abrasion. This paper presents a tutorial introduction, comprehensive history and review of research work carried out in the area of PMEDM. The machining mechanism, current issues, applications and observations are also discussed. (c) 2006 Elsevier B.V. All rights reserved.
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