Determination of Optimal Cutting and Tool Geometry Parameters for Better Surface Integrity of Hard Turned AISI 52100 Steel-Hybrid GRA-PCA

Abstract

In the present work, AISI 52100 steel hard turning has been performed using PCBN tools. Cutting speed, feed, depth of cut, nose radius and negative rake angle are the input parameters, and the measured responses are surface roughness and workpiece surface temperature. Experiments are planned as per central composite rotatable design (CCD) of response surface methodology (RSM). The effect of input parameters and their interactions are discussed with main effects plot and response surface plots. Further, the multi-objective optimization scheme is proposed by adopting grey relational analysis (GRA) coupled with the principal component analysis (PCA). Results demonstrated that responses considerably affected by speed followed by nose radius, feed, depth of cut and negative rake angle. Cutting speed 1000 rpm, feed 0.04 mm/rev, depth of cut 0.4 mm, nose radius 1 mm and negative rake angle 15° are the obtained optimum cutting parameters.