Experimental Investigation For Process Parameters In Electric Discharge Machining Of M2 Die Steel Using Different Electrode By Taguchi Method

Abstract

Electric Discharge Machining (EDM) is one of the most efficient employed non-traditional machining processes for cutting hard-to-cut materials. Modern ED machinery is capable of machining geometrically complex or hard material components. Heat treated tool steel, composites, super alloys, ceramics, etc. but the major problem is tool wear rate and low material removal rate. In the present work, an experimental investigation has been carried out to study the effect of cryogenic treatment on copper electrode in terms of Material Removal Rate, Electrode Wear Rate on M2 tool steel. The present material used for the work were having hardness up to 62 HRC and then machined with electrode materials of normal copper and cryogenic treated copper and cryogenic treated tempered copper with 12 mm diameter and 100 mm in length using different process parameters like Discharge current [A], Pulse on time [μs], pulse off time [μs] at three levels using L9 orthogonal array. Then in second part of present work optimization of output parameters such as Material Removal Rate (MRR) and electrode wear rate (EWR) during electric discharge machining of M2 tool steel using Grey-Taguchi analysis .After the comparative study the Result includes the selection of best electrode under optimal process parameters to get the High Material Removal Rate and Depth of cut and Low Tool Wear Rate.