Surface Integrity of Aluminium Processed with Cu-SiC Powder Metallurgy Green Compact Tools in EDM
DOI:
https://doi.org/10.54228/mjaret0923004Keywords:
EDM; Powder metallurgy; Surface integrity; Surface modificationAbstract
EDM is an unconventional machining process widely used for machining tough material. A special aspect of EDM is surface modification by transferring the tool electrode material to work piece surface. In the present work electrode prepared with copper (cu) and silicon carbide (SiC) by powder metallurgy route as tool and Aluminium plate is the workpiece material. A comprehensive experimental study was carried out. Material transfer rate (MTR), surface roughness, scanning electron microscopy (SEM), energy dispersive x-ray (EDX) was used to demonstrate the effect of various process parameters on surface characteristics. The pulse on time during electrical discharge coating (EDC) on metal transfer rate (MTR) and surface roughness (Ra) have been studied. From the experiment results, it can be revealed that the MTR is higher at high current and pulse on time. Surface roughness diminished at low current, and pulse on time. The surface integrity of the workpiece was determined to change with the desired deposition of a hard composite layer of SiC and copper over the work surface.
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