Abstract
Metal matrix composites (MMCs) contain hard ceramic particles are difficult to machine due to their abrasive nature. It is necessary to develop a suitable technology for the efficient machining of MMCs because of their potential widespread usage. An attempt is made to find out the best machining parameters in the drilling of (LM5/ZrO2) using Taguchi Technique. A novel composite made of LM5 aluminum alloy reinforced with Zirconia with three different weight percentages (3, 6 & 9%) was fabricated by stir casting process. In the fabricated composite material the influence of input parameters like feed rate, spindle speed, drill material and percentage of reinforcement on the thrust force is determined by performing drilling operation in CNC machine using L27 Orthogonal array. The analysis was done using Taguchi’s Signal-to-Noise ratio analysis. Response graphs are used to analyze the response characteristics of the parametric results. Analysis of Variance (ANOVA) was performed to classify the relevant variables and measure their effect on response characteristics. Spindle Speed and Feed rate are the most important input parameters for obtaining minimum thrust force.
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