Abstract
Electrical Discharge Machining is a thermo-electric process and one of the advanced methods of machining. In the present study, the optimal setting of the process parameters on Electric Discharge Machining (EDM) was determined. The important process parameters that have been selected are peak current, pulse on time, pulse off time and tool lift time with output response as Material Removal Rate (MRR) and Surface Roughness (SR).Taguchi experimental design (L27 orthogonal array) was used to formulate the experimental layout and experiments were conducted on 17-4 Precipitation Hardening Stainless Steel (PH Steel) machined with copper tungsten electrode. ANOVA method was used with the help of MINITAB 17 software to analysis the influence of input process parameters on output response. The input parameters were optimized in order to obtain maximum MRR and minimum surface roughness (SR), the results of the present work revealed that proper selection of input parameters will play a significant role on MRR and SR, finally the experimental results were validated by confirmation tests.
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