Journal of Guangdong University of Technology ›› 2021, Vol. 38 ›› Issue (02): 99-106.doi: 10.12052/gdutxb.200110

• Comprehensive Studies • Previous Articles     Next Articles

Cutting Performance of AlCrSiN Coated Tool in Dry Turning Ti-6Al-4V Titanium Alloy

Liu Jie1,2, Zhu Shui-sheng1, Xiao Xiao-lan1, Deng Xin1   

  1. 1. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China;
    2. School of Intelligent Manufacturing, Guangzhou Panyu Polytechnic, Guangzhou 511483, China
  • Received:2020-09-01 Online:2021-03-10 Published:2021-01-13

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Abstract: Ti-6Al-4V titanium alloy was dry turned by uncoated and AlCrSiN coated carbide inserts at three cutting speeds. It was found that the cutting life of AlCrSiN coated inserts exceeds uncoated inserts at all three cutting speeds and meanwhile the three values of cutting force, cutting temperature and workpiece surface roughness are lower than that of uncoated tools, which shows that AlCrSiN coating can effectively protect the substrate and maintain the sharpness of the tool. During the cutting process, the cutting force of both tools increased first and then decreased, which is related to the lubricating oxides produced by the two tools at high temperatures. Both cutting temperature and workpiece roughness have a positive correlation with the wear of the flank, that is, as the wear of the flank increases, the temperature and roughness increase accordingly, and incidentally, the increase in temperature is also related to the increase in plastic deformation and heat in the first deformation zone of the rake face. In addition, the chip size, color, and sawtooth frequency produced by the two tools also prove that the AlCrSiN coated tool has lower wear rate and cutting temperature than the uncoated tool.

Key words: AlCrSiN coating, Ti-6Al-4V, cutting force, cutting temperature, roughness, tool wear

CLC Number: 

  • TG712
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[1] Xiao Bai-jun, Liu Jie, Xiao Xiao-lan, Wang Qi-min. High Speed Machining of Ti-6Al-4V Alloy with PVD Coated Carbide End Mills under Oils on Water Cooling [J]. Journal of Guangdong University of Technology, 2018, 35(04): 10-24.
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