Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Analysis of Laser Heat Distribution in Al-Cu Welding

알루미늄 구리 용접에서 레이저 열원 분포 분석

  • Choi, Hae Woon (Department of Mechanical Engineering, Keimyung University)
  • Received : 2020.06.24
  • Accepted : 2020.07.26
  • Published : 2021.02.28
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Abstract

A computer simulation was performed to study the effectiveness of temperature on the type of laser heat source in the context of the heterogeneous welding of aluminum and copper materials. Three different types of heat sources were used in the computer simulation: 1) Single Beam Straight Scan, 2) Single Beam Wobble Scan, and 3) Dual Beam Straight Scan. Among these sources, dual beam straight scan was found to be the most effective from the viewpoint of heat source control. Because the difference between the melting temperatures of copper and aluminum is approximately 400℃, a clear separation of heating temperature was required, and the dual beam straight scan provided superior controllability in this regard. When using the dual beam, the temperature of the 90:10 split was considerably easier to control than that of the 50:50 split. The optimal offset was calculated to be 4 mm off to the copper side, where the melting temperature and thermal conductivity were higher. In this manner, computer simulation was effectively used for determining the optimal laser beam hear source control without performing an actual laser welding experiment.

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References

  1. Kessler, F., "Fiber Laser Welding in the Car Body Shop," Journal of Welding and Joining, Vol. 31, No. 4, pp. 17-22, 2013. https://doi.org/10.5781/KWJS.2013.31.4.17
  2. Wang, P., Chen, X., Pan, Q., Madigan, B. and Long, J., "Laser welding dissimilar materials of aluminum to steel: an overview," The International Journal of Advanced Manufacturing Technology, Vol. 87, pp. 3081-3091, 2016. https://doi.org/10.1007/s00170-016-8725-y
  3. Mohammadpour, M., Yazdian, N., Yang, G., Wang, H., Carlson, B. and Kovacevic, R., "Effect of dual laser beam on dissimilar welding-brazing of aluminum to galvanized steel," Optics and Laser Technology, Vol. 98, pp. 214-228, 2018. https://doi.org/10.1016/j.optlastec.2017.07.035
  4. Park, J. U., Lee, J. B., An, G. B., Kim, S. M. and Seo, H. W., "Characteristic of Welding Rotational Deformation in Laser Welding of Thin Steel Sheet," Journal of Welding and Joining, Vol. 36, No. 6, pp. 1-7, 2018. https://doi.org/10.5781/jwj.2018.36.6.1
  5. Choi, H., "Analysis of Heat Transfer by Various Laser Beam Patterns in Laser Material Process," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 17, No. 5, pp. 37-44, 2018. https://doi.org/10.14775/ksmpe.2018.17.5.037
  6. Lee, J., Im, Y. and Park, K., "Finite Element Analysis of a Customized Eyeglass Frame Fabricated by 3D Printing," Transactions of the Korean Society of Mechanical Engineers A," - Vol. 40, No. 1, pp. 65-71, 2016. https://doi.org/10.3795/KSME-A.2016.40.1.065
  7. Jang, Y., Lee, J. and Kang, K., "Structural Integrity of Small Wind Turbine Composite Blade Using Structural Test and Finite Element Analysis," Transactions of the Korean Society of Mechanical Engineers A, Vol. 36, No. 9, pp. 1087-1094, 2012. https://doi.org/10.3795/KSME-A.2012.36.9.1087
  8. Kim, C., Kim, J. and Kim, K., "A Study on the Distortion of a Thin Plate Panel by Laser Welding," Journal of KWJS, Vol. 25, No. 1, pp. 49-56, 2007.
  9. Kim, Y., Kim, Y. and Jeon, E., "Analysis of Heat Treatment Process Conditions for Output Characteristics of Permalloy Core on Current Sensors using DOE," The Korean Society of Manufacturing Process Engineers, Vol. 19, No. 4, pp. 16-23, 2020.