Performance Study of Electrical Discharge Machining (EDM) Process in Burr Removal of Drilled Holes in D2 Steel

Abstract

Deburring is a finishing process in which burrs and sharp edges are removed from metal, plastics and other work piece materials. This research paper is about deburring through Electric Discharge Machining process (EDM), which is useful for finishing materials with very high precision. This is one of the latest process, which are called as Advanced Finishing Processes. In this research, the drilling operation was done on the specimen material D2 to obtain burrs and comparative study was done with different parameters and different electrodes for deburring effectively through EDM. The variable parameters were discharge current, pulse time on and pulse time off and other parameters were remained constant. Material removal rate, tool wear rate and burr height were studied as output parameters to analyze the performance of the combination of the input parameters for burr removal. Grey relational analysis was used to find out the optimal levels of the parameters with copper and brass electrodes respectively. And obtained contour graphs shows the effect of input parameters on the output parameters.