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Volume 14 Issue 6
Dec.  2007
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Zhihe Dou, Tingan Zhang, Haien Yu, Liping Niu, Xiaoli Jiang,  and Huan Yang, Preparation of CuCr alloys by thermit-reduction electromagnetic stirring, J. Univ. Sci. Technol. Beijing, 14(2007), No. 6, pp. 538-542. https://doi.org/10.1016/S1005-8850(07)60124-8
Cite this article as:
Zhihe Dou, Tingan Zhang, Haien Yu, Liping Niu, Xiaoli Jiang,  and Huan Yang, Preparation of CuCr alloys by thermit-reduction electromagnetic stirring, J. Univ. Sci. Technol. Beijing, 14(2007), No. 6, pp. 538-542. https://doi.org/10.1016/S1005-8850(07)60124-8
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Materials

Preparation of CuCr alloys by thermit-reduction electromagnetic stirring

  • 通讯作者:

    Tingan Zhang    E-mail: zta2000@163.com

  • The influences of the additive CaF2, different molds, mold pre-heating temperature, electromagnetic stirring, and alloying elements on CuCr have been investigated respectively during the preparation of CuCr alloys by thermit-reduction electromagnetic stirring. The results indicate that the reasonable reactant mass ratio of CuO: Cr2O3:Al is 100:140:160; CaF2 can reduce the solidification point of slags to improve the metal separating efficiency from slags; the crystal particles become thinner because of the high cooling velocity in the metal mold; while casting in the graphite mold, the casting properties of CuCr improve with the increase of pre-heating temperature; the compact alloys are prepared at 500℃; electromagnetic stirring can prevent the growth of dendrite crystal into refine crystal particles, as well as homogenize Cu and Cr to improve the CuCr properties; the optimal stirring time is 7 min; when the alloying elements Ni and Co are added to the reactants, elements Cu and Cr can distribute evenly but the crystal particles become thick.
  • Materials

    Preparation of CuCr alloys by thermit-reduction electromagnetic stirring

    + Author Affiliations
    • The influences of the additive CaF2, different molds, mold pre-heating temperature, electromagnetic stirring, and alloying elements on CuCr have been investigated respectively during the preparation of CuCr alloys by thermit-reduction electromagnetic stirring. The results indicate that the reasonable reactant mass ratio of CuO: Cr2O3:Al is 100:140:160; CaF2 can reduce the solidification point of slags to improve the metal separating efficiency from slags; the crystal particles become thinner because of the high cooling velocity in the metal mold; while casting in the graphite mold, the casting properties of CuCr improve with the increase of pre-heating temperature; the compact alloys are prepared at 500℃; electromagnetic stirring can prevent the growth of dendrite crystal into refine crystal particles, as well as homogenize Cu and Cr to improve the CuCr properties; the optimal stirring time is 7 min; when the alloying elements Ni and Co are added to the reactants, elements Cu and Cr can distribute evenly but the crystal particles become thick.
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