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.

摘要

硬质合金刀片表面的涂层可有效减少切削热向刀片内部的传递，提高表面耐磨性和切削性能，保证使用寿命。本文通过二维传热模型分析了涂层对刀片内部热传导的影响，并对温度分布进行了定量描述。建立了TiAlN涂层和未涂层​​刀片的仿真模型，并比较了仿真结果。结果表明，与未涂层刀具相比，TiAlN涂层刀片的切削温度降低了约5%。涂层有效地减少了切削热向基体的传导，基体内部温度明显低于未涂层刀具。