Effect of process parameters on the surface crack density of AISI 304 in PMEDM

摘要

Purpose: In this study, powder mixed electro discharge machining (PMEDM) has been performed for the machining of AISI 304 stainless steel by using the tungsten carbide electrode when silicon carbide (SiC) powder is mixed with kerosene. The purpose of this study is to find the optimal value and ascertain the effect of significant machining parameters on surface crack density (SCD) of a machined surface of AISI 304. Design/methodology/approach: A face-centered central composite design-based response surface methodology has been adopted for designing this experiment. Findings: An increase in peak current and powder concentration decreases SCD, which is the main goal of this investigation. Originality/value: From this investigation, an optimal value has been achieved to minimize the SCD and prevent fatigue and corrosion resistance of the workpiece.