To Compare and Optimization of Tool Wear Rate Using Electric Discharge Machining for Industrial Control

Super alloys are advanced engineering materials having high potential for aerospace and defence industries. Inconel 625, a nickel-chromium heat resistant alloy used in various applications such as in the manufacturing of aerospace fasteners, gas turbine engineering and heat treatment equipment. In this research, electric discharge machining is used for making holes on Inconel 625 and three control factors namely pulse current, pulse on time and flushing pressure are considered. These three factors having three levels each be taken into consideration and tool wear rate (TWR) is attained as a response measure. The experiment results are based on (L18 21*33) orthogonal array of Taguchi's methodology. The Anova technique is used for S/N ratio for TWR and showing that pulse current, pulse on time and flushing pressure are significant. The experiment results prove that the TWR is decreased by the use of cryogenically treated electrode.