Wear mechanisms of PCD tool in high-speed milling of SiC p/Al composites

被引：1
|
作者：
Ge Y.-F. [1 ]
Xu J.-H. [2 ]
Fu Y.-C. [2 ]
机构：
[1] School of Mechanical Engineering, Nanjing Institute of Technology
[2] College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics
来源：
Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2011年 / 19卷 / 12期
关键词：
High-speed milling; Particulate reinforced aluminum matrix composite; Polycrystal Diamond(PCD) tool; Wear mechanism; Wear pattern;
D O I：
10.3788/OPE.20111912.2907
中图分类号：
学科分类号：
摘要：
Milling tests for SiC p/2009Al composites were performed by using Polycrystal Diamond(PCD) tools at the cutting speed of 600-1200 m/min and the mechanisms of tool wear were investigated. A Scanning Electron Microscope (SEM) was used to examine the machined surfaces and tool wear land, an X-ray diffractometer (XRD) was used to analyze the substances on the machined surface and the laser Raman spectra and Energy Density Spectrometry(EDS) were taken to analyze the elements on the tool wear land. The results show that the tool grain breaking-off, abrasive wear, chipping and the peeling caused by the high frequency impact and the scrapt of SiC particles are the prevalent wear patterns. When high volume fraction materials or heat treated materials are milled, or the milling is at a higher cutting speed, micro-cracks will form on the PCD tools. Furthermore, volume fractions, average sizes of SiC particles, tool grain sizes, cooling and heat treating conditions have significant influence on the tool wear. It concludes that the life of PCD tools is in the range of 70-240 min. The micro-cracks are produced on the tool flank under the combined effects of SiC particle impact, cutting vibration and heat impact. Moreover, the aluminum and copper can be diffused into the tool matrix under the very high cutting temperature and cutting forces and the trivial graphitization is taken place on the PCD tools due to the catalysis of copper in the aluminum matrix.
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页码：2907 / 2918
页数：11
相关论文
共 18 条
  • [1] Zhang J.H., Zhang Y.M., Han J.C., Et al., Design, fabrication and testing of space-borne SiC mirror, Opt. Precision Eng., 14, 2, pp. 179-184, (2006)
  • [2] Cui Y., Li L.F., Li J.L., Et al., High volume fraction SiC/Al composites for space-based optomechanical structures, Opt. Precision Eng., 15, 8, pp. 1175-1180, (2007)
  • [3] Lin Z.W., Liu Y.Q.L., Iang Y., Et al., Application of carbon fibre reinforced composite to space optical structure, Opt. Precision Eng., 15, 8, pp. 1181-1185, (2007)
  • [4] Ge Y.F., Xu J.H., Yang H., Experiments of ultra-precision turning of SiC <sub>p</sub>/Al composites, Opt. Precision Eng., 17, 7, pp. 1621-1629, (2009)
  • [5] Ei-Gallab M., Sklad M., Machining of Al/SiC particulate metal matrix composites Part III: comprehensive tool wear models, J. Mater. Process. Technol., 101, pp. 10-20, (2000)
  • [6] Quan Y.M., Zhou Z.H., Machinability of aluminium matrix composites reinforced by different size SiC particles and their applicable tools, Materials Science & Engineering, 14, 4, pp. 59-64, (1996)
  • [7] Liu L.H., Cutting of metal matrix composites, Journal of Wuhan Transportation University, 18, 4, pp. 363-368, (1994)
  • [8] Xu J.H., Zuo D.W., Yang M.D., Et al., Machining of metal matrix composites, Trans. NUAA, 12, 2, pp. 161-167, (1995)
  • [9] Ibrahim C., Mehmet T., Ulvi S., Evaluation of tool wear when machining SiC <sub>p</sub>-reinforced Al-2014 alloy matrix composites, Materials and Design, 25, pp. 251-255, (2004)
  • [10] Li D., Yan G.C., Experimental study on milling machining of particle reinforced aluminum matrix composites, Modern Manuf. Eng., 3, pp. 15-17, (2007)
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