Experimental Investigation and Optimization of EDM Process Parameters in Machining of Stainless Steel s-32760 Using Taguchi Method

Abstract

Stainless steel exposes high intensity of rigidity and strength. Electrical discharge machine (EDM) has the ability to machine such materials. Optimization of machining parameters is absolutely crucial for effective results of machining. The present work addresses the influence of process parameters, such as current (I_p), pulse duration (T_on), and voltage (V) on recital quantity material removal rate (MRR) on sinker electrical discharge machining of steel s-32670. Taguchi design approach has been used for planning the experiment and to establish the optimal setting level of controllable factors using signal-to-noise (S/N) ratio, and the significant contribution of these factors on output responses is analyzed with the assistance of analysis of variance (ANOVA). Minitab18 software is used to analyze the experimental design with 16 treatment condition of controllable parameters arrangement called L₁₆ orthogonal array. Recital quantity MRR is calculated and amended for different set of experiments. The result of the present work reveals the optimal level of input factors for maximum MRR, while factors such as current and pulse duration play the most considerable role in EDM machining process. The findings from this study will be valuable for engineers to opt for optimal level of EDM machining factors to appliance s-32670 steel, which curtail the losses for the period of machining and directly elevate outlay and time.