Investigation on machinability of Inconel 718 using ZNC EDM with Taguchi approach

Investigation on machinability of Inconel 718 using ZNC EDM with Taguchi approach
Author(s):
Rajesh Kumar, Vivek Kumar
Keywords:
ZNC EDM, Machining, Cu Electrode, MRR, Taguchi, ANOVA
Abstract
Currently manufacturing industries are in front challenge from these advanced materials like super alloys, ceramics, and composite material that are not easy to machine, requiring better surface finish thus increase machining cost. In this study, the effects and optimization of process parameters on material removal rate (MRR) and tool wear rate (TWR) in electrical discharge machining (EDM) of Inconel 718 are attempted using ZNC spark erosion machine. Four process parameters namely peak current, pulse on time, pulse of time and gap voltage are considered for experimental study. A Taguchi optimization technique is used for design of experiments. The significant effects of process parameters on MRR and TWR are studies using analysis of variance (ANOVA). Pulse off time and peak current are observed as the most significant factors affecting MRR and TWR respectively. The optimal setting of process parameters are further validated by confirmatory experiment.
Article Details
Unique Paper ID: 144966 Publication Volume & Issue: Volume 4, Issue 6 Page(s): 350 - 354
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