Evaluating Machining Performance of Used Vegetable Oil as an Eco-Friendly Dielectric Fluid in Electric Discharge Machining

Abstract

Electrical Discharge Machining is a spark erosion machining process where removal of material takes place between workpiece and tool electrode by electric discharges in presence of dielectric fluid. Despite of many advantages EDM still has some sustainability issues like more power consumption, emission of hazardous gases and operators health concerns. In this present study used vegetable oil is taken as alternate green dielectric fluid to investigate its effect on the output responses. Machining was done on superalloy superni 909 by considering discharge current, pulse on time, voltage, pulse off time and electrode as process variables. The responses like MRR, TWR, and SR were analyzed to check the feasibility of used vegetable oil as dielectric medium. Using Taguchi Design of Experiments a mathematical model is generated to study the effect of process parameters on output responses. The goal of this research is to provide eco-friendly environment by using green dielectrics which give satisfactory output.