EXPERIMENTAL INVESTIGATION OF ROLLER BURNISHING PROCESS FOR MICRO HARDNESS OF ALUMINUM 63400 USING TAGUCHI

Burnishing is a post machining process that is traditionally used to impart specific physical, mechanical properties on surfaces. Optimization of surface microhardness using Taguchi orthogonal array L25 is reported in the present study. The material selected for the experiment is aluminum alloy 63400 grade. Carbide roller burnishing tool is used in the experiment. The factors that are controlled are speed, feed, depth of penetration and number of passes. Vickers micro hardness tester is used to measure a microhardness. In the present investigation for analyzing the data, plot of average response curves, plot of signal to noise ratio(S/N), response graphs and analysis of variance (ANOVA) for S/N data is used. Depth of Penetration and Number of Passes are the most contributing factors in surface roughness. Optimum Condition from Taguchi Analysis is speed 10 m/min, 0.8 mm/rev feed, depth of penetration 0.12 mm and number of passes four.