Effect of Face Milling Parameters on Surface Roughness of ADC 12 Aluminum Alloy Using 3 Levels Full-Factorial Design

Abstract

The purpose of this study aims to determine the influence of machining parameters which were consisted of three parameters; feed per tooth, cutting speed and depth of cut on surface roughness in CNC face milling process of ADC 12 aluminum alloy. The settings of machining parameters were conducted through 3 levels full-factorial design with 2 replicates. In addition, CNC machining center and carbide insert were fitted together with milling cutter which 63 millimeters of diameter, under wet cutting condition. The surface roughness of end-milled face was measured by the surface roughness tester. It was found that the most influence main factor was feed per tooth, followed by cutting speed. It was also found that interaction between cutting speed and feed per tooth, cutting speed and depth of cut as well as feed per tooth and depth of cut also impact the surface roughness. In contrast, Depth of cut was not affected on surface roughness at significant level of 0.05. Moreover, the minimum of surface roughness value was obtained with 800 m/min of cutting speed, 0.05 mm/tooth of feed rate and 0.6 mm of depth of cut which result 0.142 of Ra.