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Simulation Analysis of the Influence of Coating on the Cutting Temperature Distribution inside the Insert

Abstract The coating on carbide insert surface can effectively reduce the transfer of cutting heat to the inside of the insert, improve the surface wear resistance and cutting performance, and ensure the service life. In this paper, the influence of coating on the heat conduction inside the insert is analyzed by two-dimensional heat transfer model, and the temperature distribution is quantitatively described. The simulation models of TiAlN-coated and -uncoated inserts are established, and the simulation results are compared. It is found that the cutting temperature of TiAlN-coated insert decreased by about 5% compared with that of uncoated cutting tools. The coating effectively reduced the conduction of cutting heat to the matrix, and the internal temperature of the matrix was significantly lower than that of uncoated cutting tools.