Main Article Content
Abstract
Tool life enhancement has always been an area of research. To achieve that, along with the optimization of machining parameters, heat treatments are also done to increase the cutting tools’ mechanical properties. In cryogenic processing, the materials get treated at sub-zero temperatures. The productivity, efficiency, durability, wear resistance, abrasion resistance and erosion resistance increases with cryogenic treatment. In this paper, CNC turning operation using optimized machining parameters is performed on C18000 copper alloy, using Cryo treated and untreated zero back rake HSS cutting tool, to investigate and compare the tool life. Deep cryogenic treatment is done at – 196˚C with a cooling rate of 0.5˚C per min. Optimum speed, depth of cut and feed are obtained using the Taguchi method. The surface roughness of the workpiece is measured using Taylor Hobson-PGI-120contact-type mechanical profiler. The workpiece surface degradation is considered as an indication of the tool failure. Quantification of the tool wear is done through Taylor Hobson-Coherence Correlation Interferometer (3D Optical Profilometer). This is a new technique that can be used to capture and measure the tool wears.