Analysis of Material Removal Rate in Electrical Discharge Machining (EDM).

Electrical discharge machining is an unconventional machining process that uses the concept of controlled spark discharges which increases the temperature of the surface of work-piece and results into the removal of material from work-piece. EDM is used to machine materials which are hard in nature and have very high strength. There is no direct contact between the tool and work-piece, hence there is no mechanical energy involved in this process. There are three main performance characteristics of EDM –Material removal rate, Electrode wear rate and Surface roughness. In this paper we are going to review multiple published research papers which are mainly focused on the Analysis of the Material removal rate of work-piece by optimising different combination of process parameters like peak current, voltage, pulse-on time, interval time, rotating speed of electrode, arc gap and addition of electrically conductive particles in dielectric.