Effect of Cryogenic Treatment on the Machinability of Impax Supreme Steel and Optimization of Machining Parameters

This study investigated the effects of process treatment applied to cutting tools during turning of impax supreme alloy on cutting tool tip temperature, vibration, surface roughness and noise.Coated carbide tools coated with TiCN + Al 2 O 3 + TiN by chemical vapour deposition (CVD) method were used as cutting tools.Deep cryogenic treatment was applied to the cutting tools, which were maintained at -196 C for 15 hours.Impax supreme alloy was turned using four different cutting speeds (150, 180, 210, 240 m/min), two different feed rates (0.1 and 0.2 mm/rev) and a constant depth of cut (0.6 mm).As a result of the turning process with cryogenically treated and untreated tools, the nose wear, surface roughness, vibration, noise and cutting tool tip temperature data obtained were evaluated experimentally.Turning experiments with both cryogenically treated and untreated tools showed that the cutting tool wear, cutting tool tip temperature, surface roughness, vibration and noise values decreased after the deep cryogenic treatment applied to the cutting tool.Cryogenic-treated tools exhibited approximately 25%, 25% and 12% lower values for surface roughness, cutting temperature and vibration, respectively.However, no significant difference was observed in noise values.Depending on the cutting conditions, deep cryogenic treatment can reduce cutting tool wear and enhance cutting tool life by up to 150%.It was determined that feed rate was the parameter that had the most dominant effect on surface roughness and vibration, with rates of 69.29% and 89.54%.The results obtained in this study have shown that the cutting tool performance can be greatly improved by cryogenic treatment in the machining of Impax Supreme alloy.In this respect, it will greatly contribute to the literature in machinability studies.