Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (8): 83-88.doi: 10.3969/j.issn.1000-565X.2010.08.016

• Mechanical Engineering • Previous Articles     Next Articles

Experimental Investigation into Milling of Nickel-Based Powder Metallurgy Superalloy with Coated Tools

Qiao Yang 1.2  Ai Xing 1.2  Liu Zhan-qiang 1.2  Zhao Jun 1.2   

  1. 1. School of Mechanical Engineering, Shandong University, Jinan 250061, Shandong, China; 2. Key Laboratory of High Effieieney and Clean Mechanical Manufacture of the Ministry of Education, Shandong University, Jinan 250061, Shandong, China
  • Received:2009-11-11 Revised:2010-03-02 Online:2010-08-25 Published:2010-08-25
  • Contact: 乔阳（1984-），男，博士生，主要从事难加工材料高效加工及其刀具材料的研究． E-mail:qiaoyang@mail．sdu．edu．cn
  • About author:乔阳（1984-），男，博士生，主要从事难加工材料高效加工及其刀具材料的研究．
  • Supported by:

    国家“973”计划项目（2009CB724401）

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Abstract:

Milling experiments of nickel-based powder metallurgy superalloy using coated carbide tools were conducted to investigate the wear resistance of the tools, and the corresponding wear morphologies and mechanisms were analyzed by means of SEM and EDS. Then, the milling force and tool life were investigated by multi-factor orthogonal tests, and the corresponding empirical models were established by means of the least squares method and the regression analysis. Finally, the cutting parameters of coated carbide tools for the dry milling of nickel-based powder metallurgy superalloy were optimized based on the tool life-efficiency response surface methodology. The experimental results show that （ 1 ） the wear of the coated carbide tools is mainly abrasive and adhesive ; （2） the failure form of the tools varies with the cutting speed ; （3） the established models of milling force and tool life are highly significant in terms of the effect of the feed ; and （4） the optimal dry milling conditions are as follows ： a cutting speed of 40 -60m/min, a cutting depth of 0. 15 -0. 20mm, a radial cutting depth of 10 -20mm, and a feed of 0.08 - 0. 10 mm per tool.

Key words: nickel-based powder metallurgy, superalloy, coated carbide, cutting tool, tool wear, tool life, force, cutting efficiency