Performance optimisation of the turning process along with multi-surface heating process

Abstract Materials that are difficult to cut possess excellent qualities and machinability, though conventional machining techniques require additional energy circumvent the problems associated with turning process. In this study, heat-assisted of duplex stainless steel (SS) was carried out. Various heating such as infrared (IR)-, ultraviolet (UV)- hot air (HA)-assisted were adopted. The experiment used an L 16 orthogonal array most significant parameters method, feed rate in millimetres per revolution (mm/rev), depth (millimetres [mm]) cutting speed (metres minute [m/min])on force surface roughness. technique for order performance by similarity ideal solution (TOPSIS) grey relational analysis (GRA), optimise output performance. results TOPSIS showed 16th experimental combination, i.e., HA = 0.175 mm/rev, 0.1 mm 150 m/min, required a smaller resulted lower case GRA best observed 15th is, 0.15 0.2 200 m/min. Compared non–heat-assisted process, HA- UV-assisted processes 10.25% 7.69% lesser force, respectively, roughness method 15.13% lesser.