Enhancement of Material Removal Rate in EDM

Electrical Discharge Machining (EDM) is one of the earliest non-traditional machining process. EDM process is based on thermoelectric energy between the workpiece and electrode. Material removal rate (MRR) is an important performance measure in EDM process as it is very slow then other traditional machining processes. Since long many EDM research have been explored a number of ways to improve and optimize the MRR including some unique experimental concepts. Despite a range of different approaches , all the research work in this area shares the same objective of achieving more efficient material removal coupled with a reduction in tool wear and improved surface quality. The paper reports research on EDM relating to improvement in MRR along with some insight into mechanism of material removal. In this research attention is focussed on the analysis of MRR by increasing the amount of heat content externally using some explosives like Carbon and Sulphur. DOE approach is adopted to justify the exact response of the Heat Input(Q) with two other parameters like Current(Ip) and Air-Pressure (Pa) as Input parameters. MRR is taken as a response parameter. The Experiment is done by L9 array and result are calculated and analysed to know the effect of parameters.