Optimization of Process Parameters using Taguchi Technique for Drilling Aluminium Matrix Composites (LM6 / B4C)

Abstract

Abstract Due to their abrasive behaviour, metal matrix composites (MMCs) are difficult to machine, so it is necessary to develop a suitable technology for their efficient machining. The ultimate goal of the research is to study the impact of process variables such as reinforcement, drill type, speed and feed rate on the thrust force and burr height during AMCs drilling. Aluminium Matrix Composites were manufactured with LM6 aluminium alloy as matrix and B4C as reinforcement through the low cost stir casting process. Experiments were performed using L27 orthogonal array in a CNC Vertical Machining Centre equipped with cutting tool dynamometer to measure the thrust force and burr-height was measured using vision measuring system. Experimental results demonstrated that this strategy enhances the performance characteristics expected in the drilling phase.