Experimental investigation on the performance variations of three different work piece materials in EDM with variation of thermo-physical properties

Abstract

Electro-discharge machining (EDM) is a common non-conventional machining technique for cutting a variety of conducting materials. In this study, the machining performances of Ti-6Al-4V, SS316, and WC work pieces were examined using EDM while considering various thermophysical parameters. Surface roughness, material removal rate, tool wear rate, radial overcut, surface fracture density, and surface hardness have all been investigated using different input parameters such as discharge current, pulse on time, and pulse off time. There is a wide range of performance characteristics among the materials used in the workpieces. In comparison to Ti-6Al-4V and Tungsten Carbide materials, the rate of rise in MRR, TWR, and radial overcut in SS316 is quite high as current increases.