Optimization of Process Parameters in Finishing of Weld Bead Using WEDM
Wire electric discharge machining (WEDM) is a special thermal non-traditional machining process in which the material is removed from the work-piece by a discrete spark between the work-piece and the conductive wire which has ability to generate complicated shapes of varying hardness with high accuracy and precision. In present work, WEDM process has been performed to finish weld beads developed on mild steel specimens using various process parameters like weld bead, Input current (I/P), Pulse-On (Ton), Servo voltage (SV), Wire feed (WF) were used. The paper describes the development of single response optimization using Taguchi method to predict the optimal setting of machining of wire electric discharge machine. Experiment were conducted using L18 orthogonal array and the response characteristics for above process parameters were Cutting Speed (C.S) and Surface roughness (S.R) using taguchi approach to find out the optimal process parameter setting. ANOVA was used to find out the level of significance of machining parameters and finally in the end the confirmation experiment was conducted to validate the effectiveness of the present work.
Amit Nara, Sahil Takhi