PERFORMANCE EVALUATION OF APRICOT KERNEL OIL-BASED CUTTING-FLUID USING L27 ORTHOGONAL ARRAYS DESIGN

ABSTRACT This study presents the performance evaluation of Apricot (Prunus armeniaca L.) kernel oil vegetable-based cutting fluid (AKO VBCF) using L27 orthogonal arrays design in the turning of AISI 1020 steel. The evaluation criteria were surface roughness (XSR), surface temperature (XST), and chip thickness (XCT) based on cutting speed (Xs), cutting time (Xt), and cutting depth (Xd) variables. The results showed that the turning performances were greatly influenced by Xs. All process variables showed positive main effects on XST, in the order Xs > Xd > Xt for AKO VBCF, but the reverse order for hydrocarbon-basedcutting fluid (HBCF). Rotating speed, Xs showed higher negative main effect on XSR, followed by Xt. Xd main effect was positive for both cutting fluids. AKO VBCF Xs main effect was greater than that of HBCF. There was no interaction effect in HBCF unlike AKO VBCF with negative XsXt and positive XsXd interaction. For both cutting fluids XCT was independent of Xt. AKO VBCF showed negative quadratic effect of Xs, unlike HBCF which was positive. Finally, the second order multivariate models of XSR, XST and XCT showed close agreement between the predicted and experimental values.