PROCESS PARAMETRIC STUDY OF ROTARY .ELECTRIC DISCHARGE MACHINING

Abstract

Aluminum- SiC metal matrix composites (Al-SiCp MMC) are now gaining their usage in aerospace and automotive industries. Because of their inherent nature, difficult to machine, they find very little applications in other sectors. The material removal rate (NM), tool wear rate (TWR) and wear ratio (WR) plays a serious role in analyzing machine outturn during electrical discharge machining (EDM). This work focuses on the improvement of machine output of rotary electrical discharge machining (REDM) on Aluminum-SiC metal matrix composite with a rotary copper tool (electrode). Taguchi's L27 orthogonal array is selected to design the experiments are carried to study the outcome of different parameters like applied current, gap, Duty cycle, tool rotation, Flushing pressure (three levels), on maximizing the material removal rate, minimize TWR and WR. Effective parameters were identified with the assistance of the signal-to-noise ratio and ANOVA analysis. The optimum level of each factor is chosen. Thus, this research benefits the EDM process by increased MRR and decreased TWR and