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Volume 38 Issue 5
Oct.  2020
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WANG Qiang, GUO Chao, LIU Yong-xing. Research on metal-ceramic die material used for robot cover[J]. Powder Metallurgy Technology, 2020, 38(5): 357-362. DOI: 10.19591/j.cnki.cn11-1974/tf.2019120012
Citation: WANG Qiang, GUO Chao, LIU Yong-xing. Research on metal-ceramic die material used for robot cover[J]. Powder Metallurgy Technology, 2020, 38(5): 357-362. DOI: 10.19591/j.cnki.cn11-1974/tf.2019120012
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Research on metal-ceramic die material used for robot cover

  • YiBin Vocational and Technical College, Yibin 644003, China

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  • Corresponding author:

    WANG Qiang, E-mail: wjm7333@sina.com

  • Received Date: December 28, 2019
    Graphical Abstract
    • Abstract
  • The alumina extruded metal-ceramic die materials used for the robot cover were prepared by the hot-pressing sintering, using the micro-size Al2O3 as the main material and the micro-size Cr and W as the main additives. The strength, fracture toughness, hardness, and wear resistance of the metal-ceramic die materials were studied, and the wear surface microstructure of the materials was analyzed. The results show that, when the mass fraction of the micro-size Al2O3 is 65%, the mass fractions of the micro-size W and Cr are both 12.5%, and the sintering temperature are 1640 ℃, the prepared samples can achieve the best combination properties, as the relative density, bending strength, fracture toughness, and hardness is 99.8%, 805.6 MPa, 14.5 MPa·m1/2, and 11.2 GPa respectively. At the same time, the second phases formed by metal W and Cr can produce the mechanical cold welding in the process of friction and wear, which greatly improves the wear resistance of the die materials.
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    • References (15)
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