Evaluation of machining performance and multi criteria optimization of novel metal-Nimonic 80A using EDM

Abstract This study focused to machine novel Nimonic 80A through Electric Discharge Machine process. The process parameters are optimised achieve high surface integrity along with material removal rate (MRR) minimum energy consumption. Central composite design analysis of variance technique has been applied make correlation between the parameter and responses. developed model roughness shows that peak current pulse-on time have significant effect whereas; a little pulse-off time. said result may be obtained due simultaneous action deposition notching (removal) in order form crater. In case MRR, found as factors increasing trend (i.e. when input values increased MRR increases) reverse is noticed optimum for maximum (0.512444 gm/min) (7.82203 µm) 81% desirability 13.49 A current, 150 µs 4