Electrochemical discharge machining process, variants and hybridization: A review

Abstract Electrochemical discharge machining has been proven to fabricate micro holes, micro-channels and three dimensional shapes on difficult to machine non conductive materials very efficiently. Researchers have proposed some modification in the basic configuration of the ECDM process to increase the efficiency. These modifications results in the development of ECDM variants. Further improvement in the process researchers hybridized the ECDM process. In this review article different areas of electrochemical discharge machining has been focused, which includes sparking phenomena, variants and recent hybridization. Furthermore, the article provides the knowledge to understand the research potential of an ECDM process.