Abstract
In recent years, the need for Silicon carbide (SiC) ceramic arises due to several industrial applications. However, the cost of machining such components is very high. Electrical discharge machining (EDM) serves as the most viable machining technique. In this study, optimum setting of sinking-EDM parameters and mathematical model of siliconized silicon carbide (SiSiC) using aluminum powder mixed dielectric fluid has been developed. Analysis of variance shows that, material removal rate (MRR) increases with high discharge current and low servo voltage, whereas tool wear ratio (TWR) and surface roughness (Ra) decreases with low current and pulse-on time. The effects of design parameters on the machining characteristics were investigated using fractional factorial (resolution V) technique. Confirmatory test was then carried out to validate the models developed.
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