Analysis and Optimization of Input Parameters of WEDM for MRR and SR by Using Taguchi Method on Hot Work Tool Steel A2

WEDM has changed the scenario of machining in the field of tool industry, aerospace, dies, moulds and counter cutting. WEDM is based on the principle of removal of material through electro erosion. This is a hybrid methodology which has overcome all the complex issues faced by the conventional machining processes. WEDM provides high material removal rate and good surface finishing with low tool wear rate so, this machining method is adapted by the manufacturing industries for machining of challenging jobs. The performance of the WEDM is estimated by the parameters such MRR, WWR, SR and kerf width but in this research work we studied the effect of input parameters on SR &MRR only. The objective of this study is to analyze the influence of input parameters such as TON, TOFF, IP, & WT on performance parameters. We have reviewed different types of optimization and analysis techniques but Taguchi design approach with L9 orthogonal array and ANOVA was applied to our study because these techniques are most frequent used optimization techniques. MRR is mostly influenced by the parameters TON, TOFF, WT, & IP as compared to other input parameters of WEDM.