Topsis Based Optimization of Process Parameters While Hard Turning of AIsi 52100 Steel

In the present work optimization of machining parameters is performed by employing Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) while AISI 52100 steel hard turning with polycrystalline cubic boron nitride (PCBN) tools.Based on Central Composite Design (CCD) of Response Surface Method (RSM) experiments are planned and conducted.Experiments were accomplished by varying machining parameters such as cutting speed, feed, depth of cut, nose radius and negative rake angle.In this study surface roughness and workpiece surface temperature are measured during experiment.To determine the influence of cutting parameters, Analysis of variance (ANOVA) was deployed.Optimal turning parameters are cutting speed 200 rpm, feed 0.1 mm/rev, depth of cut 0.7 mm, nose radius 1.2 mm and negative rake angle 45º.