Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical Study on the Two-Dimensional Heat Flow in High-Power Density Welding Process

고에너지밀도용접 과정에서의 2차원 열유동에 대한 수치해석적 연구

  • 박건중 (서울대학교 대학원 기계공학부) ;
  • 장경천 (서울대학교 대학원 기계공학부) ;
  • 김찬중 (서울대학교 기계항공공학부)
  • Published : 2000.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

This work presents a two-dimensional quasi-steady state model to study the fluid flow and heat transfer in high-power density welding process of thin AISI-304 stainless steel plates. The enthalpy method and the finite volume method were used for a numerical analysis of the mushy region phase change as well as the heat flow at the weld pool and the heat-affected zone. The results show that the mushy region distributed around the weld pool becomes wider downstream and the surface heat losses by convection and radiation can be significant factors in welding process especially when a welding speed is relatively low.

Keywords

References

  1. Lancaster, J. F., 1984, The Physics of Welding, Pergamon Press, Oxford
  2. Lancaster, J. F., 1994, Metallurgy of Welding, Chapman & Hall, London
  3. Swift-Hook, D. T., and Gick, A. E. F., 1973, 'Penetration Welding with Lasers,' Welding Journal, Vol. 52, pp. 492-499
  4. Mazumdar, J., and Steen, W. M., 1980, 'Heat Transfer Model for CW Laser Material Processing,' Journal of Applied Physics, Vol. 51, pp. 941-947 https://doi.org/10.1063/1.327672
  5. Miyazaki, T., and Giedt, W. H., 1982, 'Heat Transfer From an Elliptic Cylinder Moving Through an Infinite Plate Applied to Electron Beam Welding,' International Journal of Heat and Mass Transfer, Vol. 25, pp. 807-814 https://doi.org/10.1016/0017-9310(82)90093-X
  6. Dowden, J., Davis, M., and Kapadia, P., 1983, 'Some Aspects of the Fluid Dynamics of Laser Welding,' Journal of Fluid Mechanics, Vol. 126, pp. 123-146 https://doi.org/10.1017/S0022112083000075
  7. Wei, P. S., and Giedt, W. H., 1985, 'Surface Tension Gradient-Driven Flow around an Electron Beam Welding Cavity,' Welding Journal, Vol. 64, pp. 2515-2595
  8. Hsu, Y. F., and Rubinsky, B., 1988, 'Two-Dimensional Heat Transfer Study on the Keyhole Plasma Arc Welding Process,' International Journal of Heat and Mass Transfer, Vol. 31, pp. 1409-1421 https://doi.org/10.1016/0017-9310(88)90250-5
  9. Kim, C.-J, Kauh, S., Ro, S. T., and Lee, J. S., 1994, 'Parametric Study of the Two-Dimensional Keyhole Model for High Power Density Welding Processes,' Journal of Heat Transfer, Transactions of ASME, Vol. 116, pp. 209-214
  10. Al-Khalidy, N., 1998, 'An Upwind Numerical Solution of Nonlinear Advection-Diffusion Problems with a Moving Heat Source,' Heat and Mass Transfer, Vol. 34, pp. 287-293 https://doi.org/10.1007/s002310050261
  11. Trappe, J., Kroos, J., Tix, C., and Simon, G., 1994, 'On the Shape and Location of the Keyhole in Penetration Laser Welding,' Journal of Physics D: Applied Physics, Vol. 27, pp. 2152-2154 https://doi.org/10.1088/0022-3727/27/10/024
  12. Incropera, F. P., and DeWitt, D. P., 1990, Fundamentals of Heat and Mass Transfer, John Wiley & Sons, Inc., Singapore
  13. Davis, J. R., Ed., 1996, Stainless Steels, ASM International, Materials Park
  14. Wood, W. D., Deem, H. W., and Lucks, C. F., 1964, Thermal Radiative Properties, Plenum Press, New York
  15. Goldak, J. A., 1997, 'Thermal Analysis of Welds,' Modeling in Welding, Hot Powder Forming, and Casting, pp. 17-29, ASM International, Materials Park https://doi.org/10.1007/0-387-23288-5_3
  16. Voller, V. R., and Prakash, C., 1987, 'A Fixed Grid Numerical Modelling Methodology for Convective-Diffusion Mushy Region Phase-Change Problems,' International Journal of Heat and Mass Transfer, Vol. 30, pp. 1709-1719 https://doi.org/10.1016/0017-9310(87)90317-6
  17. Prakash, C., Samonds, M., and Singhal, A. K., 1987, 'A Fixed Grid Numerical Methodology for Phase Change Problems Involving a Moving Heat Source,' International Journal of Heat and Mass Transfer, Vol. 30, pp. 2690-2694 https://doi.org/10.1016/0017-9310(87)90152-9
  18. Patankar, S. V., 1980, Numerical Heat Transfer and Fluid Flow, Hemisphere, New York
  19. Peric, M., 1985, 'A Finite Volume Method for the Prediction of Three-Dimensional Fluid Flow in Complex Ducts,' Ph.D. thesis, University of London
  20. 김찬중, 1998, 길잡이 전산유체역학, 문운당
  21. Ducharme, R., Williams, K., Kapadia, P., Dowden, J., Steen, B., and Glowacki, M., 1994, 'The Laser Welding of Thin Metal Sheets; An Integrated Keyhole and Weld Pool Model with Supporting Experiments,' Journal of Physics D: Applied Physics, Vol. 27, pp. 1619-1627 https://doi.org/10.1088/0022-3727/27/8/006