The effect of Al2O3 Micro Powder added in Dielectric on Electro Discharge Machining Performance of Ti6Al4V

Titanium Alloys due to appropriate physical and mechanical properties, have broad industrial applications. Electro discharge machining (EDM) is a widely accepted non-traditional material removal process used to manufacture titanium alloys components with intricate shapes and profiles. Using powder as additive for increasing performance of EDM process has been recently investigated. This process is called powder mixed EDM (PMEDM), which is a complex machining process and is governed by a number of machining parameters. The objective of present research is to realize the potential of Al2O3 powder as additive in enhancing performance of PMEDM on Ti6Al4V. Full factorial technique has been adopted to plan and analyze the experimental results. Pulse on time, pulse off time, current and powder are taken as machining parameters. Material removal rates (MRR), tool wear rate (TWR) and surface roughness (SR) are taken as response parameters. The results of variance analysis of the results show that the current, pulse on time, pulse off time, and powder have, respectively, the greatest effects on the results and the surfaces of samples is better with powder than without powder.