Performance Evaluation of Composite Powder Metallurgy Electrode on P20+Ni Steel Using Electric Discharge Machining

J. L. Ramdatti
Research Scholar, Gujarat Technological University , IN

A. V. Gohil
Research Scholar, Gujarat Technological University , IN

Keywords: Electric Discharge Machining (EDM), Powder Metallurgy (P/M), Material removal rate (MRR), Surface Roughness (SR), Taguchi Methods

Abstract

In this work, an attempt has been made to study the performance of electrode prepared with Tungsten (W), Copper (Cu), and Silicon (Si) powder using powder metallurgy process on P20+Ni steel using Electric Discharge Machining (EDM). The work has been performed with negative polarity (electrode negative and work as positive) and EDM oil as a dielectric fluid. To measure the performance of P/M electrode experiments planned and performed as per Taguchi L9 orthogonal array. The effects of input process parameters such as Compaction pressure, Peak current, and Pulse on time have been investigated to identify their effects on Material removal rate (MRR) and Surface roughness (SR). It was observed that there was the significant role of P/M electrode on the performance of Electrical Discharge Machining using controlled input parameters.

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