Optimization of Surface Roughness for CNC Turning Process Parameters while working on Stainless Steel SS410

This work focused on optimizing the cutting conditions for the minimum surface roughness (Ra) obtained in machining of stainless steel SS410 grade. Machining experiments were performed at the CNC machine using carbide cutting tools on SS410 materials. Cutting speed, feed rate and depth of cut were chosen as the cutting parameters. Taguchi L9 orthogonal array was used to design of experiment. Optimal cutting conditions was determined using the signal-to-noise (S/N) ratio which was calculated for Ra according to the ‘‘the-smaller-the-better’’ approach. The effects of the cutting parameters and tool materials on surface roughness were evaluated by the analysis of variance. The statistical analysis indicated that the parameters that have the biggest effect on Ra for SS410 materials with Spindle speed 2400mm/rev, depth of cut 0.7 mm and feed rate 0.1 mm respectively. The more effecting parameter is spindle speed.