Research Developments in Additives Mixed Electrical Discharge Machining (AEDM): A State of Art Review

Abstract

Abstract Electrical discharge machining (EDM) is a well-established modern machining process used to manufacture geometrically complex shapes, process hard materials that are extremely difficult to machine by conventional machining processes. This noncontact machining technique is continuously emerging from a mere tool and dies making process to a microscale machining applications. In recent years, researches have emphasized on increasing machining performance coupled with deliberate surface treatments. Additive mixed electrical discharge machining (AEDM) is a novel innovation for enhancing the capabilities of electrical discharge machining process in this direction. This article presents comprehensive history, mechanism of AEDM process, and reviews research literature in this area. The last part of this article outlines trends for future AEDM research directions. Keywords: Additive mixed electrical discharge machiningElectrical discharge machiningMaterial removal rateRecast layerSurface alloyingSurface-finishTool wear ACKNOWLEDGMENTS The authors would like to acknowledge the support of department of mechanical engineering, Beant College of Engineering and Technology, Gurdaspur, Punjab, India, and All India Council for Technical Education New Delhi, India, for supporting and funding the research work under research promotion scheme F. No.: 8023/BOR/RID/RPS-129/2007-2008) and F. No.:8023/BOR/RID/RPS-144/2008-2009 in this direction.