Conduction Heat Rate Analysis of Tool in AISI 4340 TurningProcess

Abstract

In the turning process a very high temperature is generated from the friction of cutting tool and workpiece. In the turning process there is also contain heat transfer reaction that occurs due to rising temperatures during the turning process. The high temperature in the cutting process has a very important influence on increasing the amount of heat that produce during the process of machining. Therefore it is necessary to analyze the effect of the rake angle and the use of LN2 and SCCO2 as a cooler to the heat transfer rate on the cutting tool using Autodesk simulation mechanical 2017 software. Based on the simulation results obtained temperature distribution values on the cutting tool during the AISI 4340 turning process using carbide tungsten as the cutting tool where the rake angle is 0°,5°, and 10°. Without using any coolant, the heat transfer rates are 30.613W, 28.386 W, and 26.160. By applying cooler such as SCCO2 and LN2 the rate of heat transfer decreases. With the application of the LN2 heat flow rate with rake angle 0°, 5°, and 10° decrease to 21.429 W, 19.191 W, and 16.965 W. The application of the SCCO2 heat flow rate on the tool with a rake angle 0°, 5°, and 10° will be 20.260 W, 18.479 W, and 16.252 W. Based on the result it is found that increased rake angle will cause a decrease in heat transfer rate. The application of SCCO2 and LN2 can reduce the heat transfer rate, therefore it can extend the cutting tool life.