Investigation of the effect of MQL coolant temperature in AISI 316L steel turning using ANN-based optimization

Abstract

In recent years, reducing the lubricant quantity used for the machining processes have gained much attention in order to limit the excessive use of conventional lubrication, for different considerations such as economic, ecological, and physical aspects. The minimum quantity lubrication (MQL) process is considered as economically, environmentally friendly and to be effective in overcoming this problem. Accordingly, this paper aims to analyze and evaluate the hard turning efficiency of AISI 316L Stainless steel with respect to surface roughness (Ra), and cutting temperature (Tc), according to combinations of cutting speed (Vc), feed rate (f), and cutting depth (ap) using coated carbide insert when turning of AISI 316L under dry, and MQL machining. It could be possible to investigate the efficiency of MQL technique for an environment-friendly ecological machining. The ANOVA analysis has been performed to determine the effect of cutting conditions on studied outputs. The results revealed that the cutting speed had the most effective influence on Ra followed by feed rate and lubrication mode, with contribution ratios of 58.39%, 19.92% and 11.91%, respectively. While the lubrication mode had the most influence on TC, with a contribution ratio of 88.98%.