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

Authors: Sunita Sethy; Rajesh Kumar Behera; Jaydev Rana; Kamalakanta Muduli

Addresses: Department of Mechanical Engineering, Veer Surendra Sai University of Technology, Burla, Odisha, India ' Department of Mechanical Engineering, Orissa Engineering College, Bhubaneswar, Odisha, India ' Department of Mechanical Engineering, Veer Surendra Sai University of Technology, Burla, Odisha, India ' Department of Mechanical Engineering, Papua New Guinea University of Technology, Lae, Morobe Province, PMB 411, Papua New Guinea

Abstract: The machining performances of Ti-6Al-4V, SS316, and WC work pieces were investigated in this study employing electro-discharge machining (EDM) while taking various thermo-physical parameters into consideration. Surface roughness, material removal rate, tool wear rate, radial overcut, surface fracture density, and surface hardness have all been explored utilising a variety of input parameters, including discharge current, pulse on time, and pulse off time, to determine their respective values. In the present research work three different work-piece materials with different thermo-physical properties such as thermal conductivity, thermal diffusivity and melting point have been considered which is new as compared to earlier research work. Among the materials employed in the creation of the work pieces, there is a wide range of performance characteristics. When the current increases, the rate at which MRR, TWR, and radial overcut in SS316 go up is much faster than in Ti-6Al-4V and tungsten carbide.

Keywords: electro-discharge machining; EDM; material removal rate; MRR; tool wear rate; TWR; surface roughness; surface crack density; surface hardness.

DOI: 10.1504/IJPMB.2023.132659

International Journal of Process Management and Benchmarking, 2023 Vol.15 No.1, pp.46 - 72

Received: 04 Mar 2022
Accepted: 15 Apr 2022
Published online: 07 Aug 2023 *

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