Effect of WEDM process parameters on machinability of Nimonic75 alloy using brass wire

Abstract

Purpose

This study aims to investigate the influence of process parameters of wire electrical discharge machining (WEDM) of Nimonic75. Nimonic75 is a Nickel-based alloy mostly used in the aerospace industry for its strength at high temperature.

Design/methodology/approach

One factor at a time (OFAT) approach has been used to perform the experiments. Pulse on time, pulse off time, peak current and servo voltage were chosen as input process parameters. Cutting speed, material removal rate and surface roughness (Ra) were selected as output performance characteristics.

Findings

Through experimental work, the effect of process parameters on the response characteristics has been found. Results identified the most important parameters to maximize the cutting speed and material removal rate and minimize Ra.

Originality/value

Very limited research work has been done on WEDM of Nickel-based alloy Nimonic75. Therefore, the aim of this paper to conduct preliminary experimentation for identifying the parameters, which influence the response characteristics such as material removal rate, cutting speed, Ra, etc. during WEDM of Nickel-based alloy (Nimonic75) using OFAT approach and found the machinability of Nimonic75 for further exhaustive experimentation work.

Citation

Singh, H., Kumar, V. and Kapoor, J. (2020), "Effect of WEDM process parameters on machinability of Nimonic75 alloy using brass wire", World Journal of Engineering, Vol. 17 No. 3, pp. 389-397. https://doi.org/10.1108/WJE-09-2019-0277