A study on the manufacturing of digital camera barrel using magnesium alloy

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• 作者：Chul Woo Park (1) p016535@empas.com
  Young Ho Kim (2)
• 关键词：Magnesium alloy – ; Digital camera – ; Barrel – ; FEA – ; DEFORM/3D
• 刊名：International Journal of Precision Engineering and Manufacturing
• 出版年：2012
• 出版时间：July 2012
• 年：2012
• 卷：13
• 期：7
• 页码：1047-1052
• 全文大小：1.1 MB
• 参考文献：1. Lee, W. R., “A Study on the formability in the warm deep drawing of magnesium alloy AZ31 sheet,” M.Sc. Thesis, Mechanical Engineering, Hongik University, 2005.
  2. Hwang, J. W. and Kang, D. M., “FE Analysis on the Press Forging of AZ31 Magnesium Alloy,” Transactions of KSAE, Vol. 14, No. 1, pp. 86–61, 2006.
  3. Kim, Y. G., “A Study of the Mechanical Properties and Forming of AZ31B Mg Alloy,” Ph.D. Thesis, Mechanical System Engineering, Pukyong National University, 2005.
  4. Yoon, D. J., Lim, S. J., Jeong, H. G., Kim, E. Z., and Cho, C. D., “Forming characteristics of AZ31B magnesium alloy in bidirectional extrusin process,” Journal of Materials Processing Technology, Vol. 201, pp. 179–182, 2008.
  5. Ogawa, N., Shiomi, M., and Osakada, K., “Forming limit of magnesium alloy at elevated temperatures for precision forging,” Int. Journal of Machine Tools & Manufacture, Vol. 42, pp. 607–614, 2002.
  6. Kim, W.-J., Chung, S. W., Chung, C. S., and Kum, D., “Superplasticity in thin magnesium alloy sheets and deformation mechanism maps for magnesium alloys at elevated temperatures,” Acta Materialia, Vol. 49, pp. 3337–3345, 2001.
  7. Kang, D. M. and Hwang, J. K., “The simulations on the formability of AZ31B magnesium alloy sheet in warm deep drawing,” J. KSMPE, Vol. 3, No. 1, pp. 52–58, 2004.
  8. Kang, D. M., Park, K. D., and Hwang, J. K., “Analysis of Formability of magnesium alloy using finite element method,” J. KSMPE, Vol. 3, No. 2, pp. 60–66, 2004.
  9. Mwembela, A., Konopleva, E. B., and Mcqueen, H. J., “Microstructural development in Mg alloy AZ31 during hot working,” Scripta Materialia, Vol. 37, No. 11, pp. 1789–1795, 1997.
  10. Li, L., Zhou, J., and Duszczyk, J., “Determination of a constitutive relationship for AZ31B magnesium alloy and validation through comparison between simulated and real extrusion,” JMPT, Vol. 172, No. 3, pp. 372–380, 2006.
  11. Murai, T., Matsuoka, S. I., Miyamoto, S., and Oki, Y., “Effects of extrusion conditions on microstructure and mechancial properties of AZ31B magnesium alloy extrusion,” JMPT, Vol. 14, pp. 207–212, 2003.
  12. Quan, G.-Z., Ku, T.-W., and Kang, B.-S., “Improvement of formability for multi-point bending process of AZ31B sheet material using elastic cushion,” Int. J. Precis. Eng. Manuf., Vol. 12, No. 6, pp. 1023–1030, 2011.
  13. Kim, Y.-J. and Choi, C.-H., “A study on life estimation of hot forging die,” Int. J. Precis. Eng. Manuf., Vol. 10, No. 3, pp. 105–113, 2009.
  14. Woo, T.-K., Hwang, B.-C., Jang, Y. J., and Kim, C., “Preventing loose bolts and reducing the number of bolts required in plate heat exchangers,” Int. J. Precis. Eng. Manuf., Vol. 10, No. 1, pp. 29–34, 2009.
• 作者单位：1. Industrial Supercomputing Department, Korea Institute of Science and Information, 245, Daehangno, Yuseong, Daejeon, South Korea 305-8062. School of Mechanical Engineering, Pusan National University, San 30, Jangjeon-dong, Geumjeong-gu, Busan, South Korea 609-735
• ISSN：2005-4602

文摘

In recent year, there has been a growth of the manufacture and application of magnesium products. For Magnesium alloys take advantage small specific gravity and relatively high strength, shielding electromagnetic waves. However, there are so many studies to assure good formability because Magnesium alloy is difficult to form. The AZ31B alloy shows an excellent workability at temperatures from 250 掳C to 400 掳C. Temperatures higher than 400 掳C are not suitable for forming of the AZ31B alloy because of heavy oxidation. Forming temperature and heat transfer of Magnesium alloy to the molds, punch velocity, friction coefficient and geometric shape of molds are important factors to forge the components successfully. The forming factors of press forging on AZ31B have been studied by finite element analysis that was done with DEFORM/3D software. By conducting a circular design which included predictive experiments, evaluation of the outcome of actual products, and process modifications, the optimum conditions were established for a forging process to manufacture a magnesium alloy camera barrel.