Study of cutting force and surface roughness in machining of za43 sic particulate mmc

Abstract

The present paper reveals the machinability properties of Zinc - Aluminium alloy reinforced with SiC particulate metal matrix composite. The composite was prepared using liquid metallurgy technique. In this study, MMC Zn-57%Al-43% was fabricated by SiC (1% and 5%) with average particle size of 30μm. Full factorial design was used to plan the experiments (54 trials) and ANOVA method was used to analyze the results. Coated carbide tool CCMT9T304 was used in the experiment. Dry turning was employed with spindle speeds of 32, 48 and 73 m/min and feed rates of 0.2, 0.3 and 0.5 mm/rev and depths of cut of 0.25, 0.5 and 0.75 mm. It was observed from the results that cutting force was significantly affected by speed, feed and depth of cut where as surface finish was affected greatly by speed and feed. Depth of cut has less effect on surface finish.