广东工业大学学报 ›› 2021, Vol. 38 ›› Issue (02): 99-106.doi: 10.12052/gdutxb.200110

• 综合研究 • 上一篇    下一篇

AlCrSiN涂层刀具干车削Ti-6Al-4V钛合金的切削性能研究

刘杰1,2, 朱水生1, 肖晓兰1, 邓欣1   

  1. 1. 广东工业大学 机电工程学院, 广东 广州 510006;
    2. 广州番禺职业技术学院 智能制造学院, 广东 广州 511483
  • 收稿日期:2020-09-01 出版日期:2021-03-10 发布日期:2021-01-13
  • 通信作者: 邓欣(1971-),男,教授,博士生导师,主要研究方向为非传统硬质合金刀具、金属基复合材料3D打印等,E-mail:ruddy.david@qq.com E-mail:ruddy.david@qq.com
  • 作者简介:刘杰(1974-)，男，副教授，博士研究生，主要研究方向为涂层刀具及先进加工技术，E-mail：liujie9118@163.com
  • 基金资助:
    广东省前沿与关键技术创新重大科技专项(2017B090911006)；广东省河源市科技项目(HEKE000781)

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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摘要： 使用未涂层的和AlCrSiN涂层的硬质合金车刀片以3种切削速度干式车削Ti-6Al-4V钛合金。研究发现AlCrSiN涂层刀片的切削寿命在各切削速度下都超过无涂层刀片, 而切削力、切削温度和工件表面粗糙度3项指标均低于无涂层刀具, 说明AlCrSiN涂层能够有效地保护基体从而维持刀具的锋利度。2种刀具在切削过程中均出现切削力先上升后下降的现象, 这与二者高温下产生的润滑氧化物有关。切削温度和工件粗糙度都与后刀面磨损量有正相关关系, 即随着后刀面磨损量的增加, 温度和粗糙度都随之增加, 但温度的增加还与前刀面第一变形区塑性变形增大, 热量增加有关。另外, 2种刀具产生的切屑尺寸、颜色、锯齿频率也证明了AlCrSiN涂层刀具磨损较慢，切削温度较低。

关键词: AlCrSiN涂层, Ti-6Al-4V, 切削力, 切削温度, 粗糙度, 刀具磨损

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

中图分类号: 

  • TG712
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