Investigation on cutting temperature and cutting force in turning AISI 304 austenitic stainless steel using AlTiCrN coated carbide insert
by Atul P. Kulkarni; Girish G. Joshi; Amit Karekar; Vikas G. Sargade
International Journal of Machining and Machinability of Materials (IJMMM), Vol. 15, No. 3/4, 2014

Abstract: In this work experimental results of dry, high speed turning of AISI 304 austenitic stainless steels using AlTiCrN coated cemented carbide insert are presented. AlTiCrN coating was deposited on cemented carbide insert using 'cathodic arc evaporation (CAE)' PVD technique. Scanning electron microscope (SEM) was used to examine the coating morphology and coating thickness respectively. Micro-hardness, coating thickness and adhesive strength of coating was found to be 30 GPa, 3.8 µm and 89 N respectively. The turning tests were conducted at cutting speeds in the range of 140 to 320 m/min, feed in the range of 0.08 to 0.26 mm/rev keeping depth of cut constant at 1 mm. The influence of cutting parameters and tool coating were investigated on cutting force and cutting temperature. A tool-work thermocouple principle was used to measure the interface temperature during turning. The correlations between the cutting parameters cutting force and cutting temperature are developed by minimising the least squares error between experimental and predicted values of cutting force and cutting temperature. The correlation coefficient found close to 0.95. Cutting speed was found to be the dominant parameter for the cutting temperature whereas cutting force gets mostly affected by feed.

Online publication date: Tue, 13-May-2014

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