Extract to Affected Factor to Surface Roughness and Regression Equation in Turning of Mold Steel(SKD61) by Whisker Reinforced Ceramic Tool

In this study, we turning mold steel (SKD61) using whisker reinforced ceramic tool (WA1) to get affected factor to surface roughness and regression equation. For this study, we adapt system of experiments. Results are follows; From the analysis of variance, it was found that affected factor to surface roughness was feed rate, cutting speed, depth of cut in order. From multi-regression analysis, we calculated regression equation and the coefficient of determination(). was 0.978 and It means regression equation is significant. Regression equation means if feed rate increase 0.039mm/rev, surface roughness will increase , if cutting speed increase 50m/min, surface roughness will decrease , if depth of cut increase 0.1mm, surface roughness will increase . From the experimental verification, it was confirmed that surface roughness was predictable by system of experiments.