Published Paper Details:

Electrical discharge machining (EDM) is a process of eroding material through a series of successive sparks between the sample and the electrode with the conversion of electrical energy to thermal energy over the work piece material by neglecting physical contact with electrodes which is having good contact with electrodes and also it possesses good electrical and thermal conductivity. For the purpose of characteristics evaluation and machining performance, Al6063 alloy was preferred and used with Silicon Carbide (SiC) which has high thermal conductivity and melting point. In view of improving hardness, strength and effective grain size, the hybrid metal matrix composite specimen were prepared by stir casting method with suitable weight percentages. For achieving excellent Material removal rate (MRR) and improvement of machining characteristics, the process was made by the comparison of Cu and Cu-Cr electrodes machining with positive as well as negative polarities. Therefore, the objective of the present work extracts the machining performance of Al-SiC-Fly ash in EDM was evaluated in terms of Material removal rate(MRR), Electrode wear rate (EWR) and surface roughness and also find out the hardness improvements by the addition of reinforcements. The experiments were carried out to expel the effective machinability and surface quality of hybrid metal matrix composite.