Investigations on the Machining of Inconel X-750: Effect of Cutting Speed, Feed, Forces, Energy Consumption and MRR

Abstract

AbstractThis work presents the study of machining operations performed on Inconel X-750 under dry environment conditions. The PVD TiAlN-coated negative inserts with small nose radius of 0.4 mm were employed for machining. The varying machining parameters were selected for these experimentation such as cutting speed (60–100 m/min.), feed (0.05–0.15 mm/rev) and constant depth of cut (0.5 mm). Experimental analysis was carried out to investigate the effect of feed and cutting speed on cutting forces, electrical energy consumption and material removal rate during the machining of Inconel X-750. The results showed that feed and cutting speed had the measurable impact on the cutting forces during machining process. At lower cutting speed, the cutting forces are higher and further reduced with increase in cutting speed during machining. However, the cutting forces are low with lower feed rate and further increased with increase in feed rate. The total energy consumption was found to be lowest at the highest range of feed and cutting speed of 0.15 mm/rev and 100 m/min, respectively. Further, the material removal rate (MRR) steadily increased with increase in cutting speed at low value. The MRR reasonably increased with increase in feed rate. It was also observed that the feed rate had greater impact on MRR than cutting speed during these machining investigations.KeywordsInconel X-750TiAlN-coated insertDry turningCutting forcesElectrical energy consumptionMaterial removal rate