Transactions of the Korean Society of Machine Tool Engineers (한국공작기계학회논문집)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Design of the Radial Extrusion Process for the General-Purpose Flange Using Model Material

모델재료를 이용한 범용 플랜지의 레이디얼 압출 공정설계

  • 이상돈 (동양공업전문대학 기계자동화공학부) ;
  • 변성광 (동양공업전문대학 기계자동화공학부)
  • Published : 2008.04.15
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Abstract

This study is to compare and analyze the material flow, deformation characteristics, and forming load of flange by means of similitude experimental method of model material using plasticine. In order to find optimal forming conditions, prototype experiments were designed to investigate forming characteristics of general-purpose flange under various working conditions. As a result of prototype experiments, billet thickness and gap-height ratio was found to be the most influential experimental parameter in flange forming. Forming loads from prototype experiments were compared to the results of finite element analysis after conducting estimation of forming loads of real material. Results of prototype experiments based on model material techniques are expected to be used as a basic data of die design f3r the development of products and process.

Keywords

References

  1. Kwon, H. H., 2001, "Failure Analysis of Cold Extrusion Die for the Helical Gear," Transactions of the Korean Society of Machine Tool Engineers, Vol. 10, No. 2, pp. 79-88
  2. Ko, B. D., Choi, H. J., Jang, D. H., and Hwang, B. B., 2003, "Material Flow and surface Expansion in Radial-Backward Extrusion," Transactions of Material Processing, Vol. 12, No. 3, pp. 251-258 https://doi.org/10.5228/KSPP.2003.12.3.251
  3. T. Wanheim et al., 1984, "Physical Modelling of Plastic Working Process," Advanced Technology of Plasticity, pp. 984-996
  4. Wanheim. T., Maegaard, V., and Dancdert, J., 1984, "The Physical Modelling of Plastic Working Processes," Advanced Technology of Plasticity, Vol. 1, pp. 984
  5. Bodnar, R. L., Ronemus, D. C., Bramfitt, B. L., and Shah, D. C., 1986, "Physical Modelling of Hot- Deformation Processes - Using Plasticine," Trans. ISS., pp. 35-46
  6. Hidehiko, T., Yoshiharu, T. and Junichi, I., 1984, "Simulation of Hot Steel in Plastic Working with Plasticine and Lead," Advanced Technology of Plasticity, Vol. 2, pp. 1003-1008
  7. Lee, J. H., Kim, Y. H., Bae, W. B. and Lee, W. H., 1993, "A Study on Development of Model Materials Showing Similar Flow Characteristics of Hot Mild Steel at Various Temperature," The Korean Society of Mechanical Engineers, Vol. 17, No. 5, pp. 1161-1171
  8. Meidert, M., Knoerr, M., Westphal, K., and Altan, T., 1992, "Numerical and Physical Modelling of Cold Forging of Bevel Gears," J. of Materials Processing Technology, Vol. 33, pp. 75-93 https://doi.org/10.1016/0924-0136(92)90312-G
  9. Altan, T., Oh S. I., and Gegel, H. L., 1983, "Metal Forming," American Society for Metals, pp. 56
  10. Wanheimand, T. and Danckert, J., 1987, "Combined physical and Numerical Modelling of Metal Forming Process," Advanced Technology of Plasticity, Vol. 1, pp. 29-36
  11. Korea flange co., Ltd: KOFCO, 2006, Flange catalog II(foreign standards), pp. 48
  12. Kobayashi, S., OH, S. L., and Altan, T., 1989, Metal Forming and The Finite-Element Method, Oxford University Press, New York; pp. 92-93, pp. 121-122