ZHANG Ergeng, HE Cheng, CHEN Qiang
(Shanghai Institute of Technology, Shanghai 201418, China)
Abstract: Nanometer TiAlSiN composite coatings were prepared on M2 high speed steel test pieces and their properties were characterized. The 3D orthogonal cutting experiment model was established to simulate the effect of TiAlSiN coating of different thickness on cutting force and cutting heat, and the simulation results of cutting force were verified by field cutting experiment. The results show that the Si suppresses the growth of the TiAlN columnar crystal, and the coated tools show good performance. The simulation results show that the cutting force and the cutting temperature of the tool decrease at first and then increase with the increase of the coating thickness. The 4μm coating tool has the minimum cutting force, and the 3 μm coating tool has the smallest cutting heat. The results of the cutting experiment show that the cutting force is consistent with the simulation trend and the error is less than 13%, which can reflect the change of the cutting heat and cutting force in the cutting process.
Key words: TiAlSiN coating; numerical simulation; cutting force; cutting heat