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Volume 15 Issue 4
Aug.  2008
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Haiqing Yin, Xuanhui Qu,  and Chengchang Jia, Fabrication of micro gear wheels by micropowder injection molding, J. Univ. Sci. Technol. Beijing, 15(2008), No. 4, pp. 480-483. https://doi.org/10.1016/S1005-8850(08)60090-0
Cite this article as:
Haiqing Yin, Xuanhui Qu,  and Chengchang Jia, Fabrication of micro gear wheels by micropowder injection molding, J. Univ. Sci. Technol. Beijing, 15(2008), No. 4, pp. 480-483. https://doi.org/10.1016/S1005-8850(08)60090-0
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Materials

Fabrication of micro gear wheels by micropowder injection molding

  • 通讯作者:

    Haiqing Yin    E-mail: hqyin@mater.ustb.edu.cn

  • The micropowder injection molding technology was investigated to fabricate the microsized gear wheels on a conventional injection molding machine. The feedstock comprised of carbonyl ferrum powder and a wax-based thermoplastic binder. Microinjection molding was fulfilled at about 423 K under 100 MPa. The heating system was applied to the die to improve the fluidity of the feedstock and subsequently the cooling system was used to enhance the strength of the green compacts after injection by decreasing the temperature of the die. The gear wheels were realized successfully with their addendum circle diameter ranging from 800 to 200 um and with the center hole as small as 60 um.
  • Materials

    Fabrication of micro gear wheels by micropowder injection molding

    + Author Affiliations
    • The micropowder injection molding technology was investigated to fabricate the microsized gear wheels on a conventional injection molding machine. The feedstock comprised of carbonyl ferrum powder and a wax-based thermoplastic binder. Microinjection molding was fulfilled at about 423 K under 100 MPa. The heating system was applied to the die to improve the fluidity of the feedstock and subsequently the cooling system was used to enhance the strength of the green compacts after injection by decreasing the temperature of the die. The gear wheels were realized successfully with their addendum circle diameter ranging from 800 to 200 um and with the center hole as small as 60 um.
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