Powder Mixed Electrical Discharge Machining

Abstract

Electrical discharge machining in the recent years has emerged as a very advanced technique for machining electrically conductive materials that are very hard to machine. Edm was developed as a electro- chemical process to overcome challenges faced by conventional methods like shaping extremely hard, complex and intricate profiles, shapes and contours but still had its own set of limitations. With time advancements were made to improve this process by adding ceramic powder to dielectric fluid. This paper reviews powder mixed edm, the effect of powder and how the optimization of parameters leads to subsequent improvement in metal removal rate, surface finish and tool wear rate using inconel 718.