Optimization of machining parameters in EDM of AL 6061 15%SIC 6%MHA composite by taguchi method

In this study machining of metal matrix composite has been conducted by electric discharge machining to investigate the effect of control parameters like current, pulse on time, pulse off time and voltage on material removal rate. The attempt has been made to use the crushed ash of mustard husk and SiC as reinforcement in Al 6061 matrix to fabricate the metal matrix composite through stir casting route. Experiments were conducted on electric discharge machine having facility to adapt the changes in control parameters. The effect of various parameters like tool electrodes, gap current, pulse on time and voltage was observed on metal removal rate. L18 orthogonal array was selected to conduct the experiments. The effect of current and pulse on time is found to be more pronounced on MRR.