Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Extrusion of Spur Gear Using High-Energy Ball Milled Al-78Zn Powder

고에너지 볼밀법으로 제조된 Al-78Zn Powder를 이용한 스퍼기어의 압출

  • 김진우 (부산대학교 대학원 정밀가공시스템) ;
  • 이상진 (부산대학교 대학원 정밀가공시스템) ;
  • 이정민 (한국국제대학교 기계자동차공학부) ;
  • 김병민 (부산대학교 기계공학부)
  • Published : 2009.04.01
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Abstract

This paper was designed to fabricate the miniature spur gear with pitch circle of 2.25mm using extrusion process of a mechanically alloyed Al-78wt%Zn powder. The mechanical alloying of the powder particles were performed for ball milled times of 4h, 8h, 16 and 32h by the planetary ball milling. The mechanical properties of these alloyed powders, which were compacted and sintered-cylindrical preforms, were estimated using compression test. The results showed that the alloyed powder with average particle size of $10{\mu}m$ milled for 32h has the highest compressive(fractured) strength(288MPa). Extrusions of the miniature spur gear using the alloyed powder were carried out at different extrusion temperatures. Extrusion temperature of $300^{\circ}C$ provided the spur gear with the highest relative density and Vickers hardness and without any surface defects.

Keywords

References

  1. Bauser, M., Sauer, G. and Siegert, K., 2006, Extrusion, ASM International, USA
  2. Kuhn, H. A. and Ferguson, B. L., 1990, Powder Forging, Metal Powder Industries Federation, USA
  3. Suryanarayana, C., 2001, 'Mechanical Alloying and Milling,' Progress in Materials Science, 46, pp. 1-148 https://doi.org/10.1016/S0079-6425(99)00010-9
  4. Sheppard, T., Mcshane, H. B., Zanidi, M. A. and Tan, G. H., 1983, 'The Extrusion of Atomized Aluminium Alloys Compacts and Composite,' Journal of Mechanical Working Technology, 8, pp. 43-70 https://doi.org/10.1016/0378-3804(83)90048-7
  5. Martins, S. R. and Misolek, W. Z., 1996, 'Consolidation of Particulate Materials in Extrusion,' Reviews in Particulate Materials, Vol. 4, pp. 43-70
  6. Saotome, Y. and Lwazaki, H., 2000, 'Superplastic Extrusion of Microgear Shaft of 10$mu$m in Module,' Microsystem Technologies, 6, pp. 126-129 https://doi.org/10.1007/s005420050180
  7. So, H., Li, W. C. and Hsieh, H. K., 2001, 'Assessment of the Powder Extrusion of Silicon-Aluminium Alloy,' Journal of Materials Processing Technology, 114, pp. 18-21 https://doi.org/10.1016/S0924-0136(01)00735-X
  8. Tanaka, T., Makii, K., Kushibe, A., Kohzu, M. and Higashi, K., 2003, 'Capability of Superplasic Forming in the Seimic Device Using Zn-22Al Eutectoid Alloy,' Scripta Materialia, 49, pp. 361-366 https://doi.org/10.1016/S1359-6462(03)00328-2
  9. Xun, Y. and Mohamed, F. A., 2004, 'Superplastic Behavior of Zn-22%Al Containing Nano-Scale Dispersion Particles,' Acta Materialia, 52, pp. 4401-4412 https://doi.org/10.1016/j.actamat.2004.03.039
  10. Xiaojin, XU., Wei, WANG. And Lan., CAI., 2004, 'Superplasticity of a SiCw/Zn-22Al Composites,' Journal of materials Science and Technology, Vol.20. No.20, pp. 172-174
  11. Xun, Y., Lavernia, E. J. and Mohamed, F. A., 2004, 'Grain Growth in Nanocrystalline Zn-22% Al,' Acta Materialia, A371, pp. 135-140 https://doi.org/10.1016/j.msea.2003.10.298
  12. Fogagnolo, J. B., Robert, M. H., Ruiz-Navas, E. M. and Torralaba, J. M., 2002, 'Extrusion of Mechanically Milled Composite Powders,' Journal of Materials Science, 32, pp. 4603-4607 https://doi.org/10.1023/A:1020648316319
  13. Tavoosi, M., Enayati, M. H. and Karimzadeh, F., 2008, 'Softening Behavior of Nanoctructured Al-14wt%Zn Alloy During Mechanical Alloying,' Journal of Alloys and Compounds, 464, pp. 107-110 https://doi.org/10.1016/j.jallcom.2007.09.119
  14. Flores-Zamora, M. I., Estarada-Guel, I., Gonzalez-Hwrnandez, J., Miki-Yoshida, M. and Martinez-Sanchez, R., 2007, 'Aluminum-Graphite Composite Produced by Mechanical Milling and Hot Extrusion,' Journal of Alloys and Compounds, 434-435, pp. 518-521 https://doi.org/10.1016/j.jallcom.2006.08.145
  15. Tavoosi, M., Karimzadeh, F., Enayati, M. H. and Heidarpour, A., 2008, 'Bulk Al-$Zn/Al_20_3$ Nanocoposite Prepared by Reactive Milling and Hot Pressing Methods,' Journal of Alloys and Compounds, online available https://doi.org/10.1016/j.jallcom.2008.07.049
  16. Galanty, M., Kaznowski, P., Kansuwan, P. and Misiolek, W. Z., 2002 'Consolidation of Metal Powders During the Extrusion Process,' Journal of Materials Processing Technology, 125-126, pp. 491-496 https://doi.org/10.1016/S0924-0136(02)00327-8
  17. Galanty, M., Libura, W. and Zasadzinski, J., 1999, 'Evaluation of Force Parameters for Aluminium Powder Extrusion,' Advanced Technology of plasticity, Vol. 3, pp.19-24
  18. Abou El-khair, M. T., Daoud, A. and Ismail, A., 2004, 'Effect of Different Al Content on the Microstucture, Tensile and Wear Properties of Zn-Based Alloy,' Materials Letters, 58, pp. 1754-1760 https://doi.org/10.1016/j.matlet.2003.10.058

Cited by

  1. Fabrication of micro spur gears by step powder extrusion of Zn-22wt%Al powder without sintering process vol.27, pp.1, 2013, https://doi.org/10.1007/s12206-012-1211-z
  2. Hybrid Powder-Extrusion Process Involving the Control of Temperature Dwelling Time for Fabricating Spur Gears with Required Properties vol.35, pp.8, 2011, https://doi.org/10.3795/KSME-A.2011.35.8.847