• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology


Indian Journal of Science and Technology

Year: 2015, Volume: 8, Issue: Supplementary 2, Pages: 1-5

Original Article

Powder-Mixed EDM Machining of Aluminium-Silicon Carbide Composites


In the present work, the effects on the Characteristic Material Removal Rate (MRR) of aluminium based Metal Matrix Composites (MMC) are observed while varying peak current and aluminium powder concentration in kerosene dielectric fluid. Aluminium MMCs prepared by reinforcing Al with different concentrations of SiC (6%, 9% & 12%) using stir casting process are machined in EDM machine using a Copper Tool of Ø6mm while varying the considered process parameters which are the peak current (2A, 4A & 6A) and the concentration of Al powder in dielectric fluid (0g/l, 1g/l & 2g/l). Experiments were conducted at a constant pulse on-time of 65µs at a duty cycle of 70% and a constant voltage of 40V. It is observed from results that the MRR increases at low peak current of 2A during PMEDM machining of Al/SiC composites.
Keywords: Al Powder, Al6061/SiC Composites, MRR, PME


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