International Journal of Automotive Technology

  • 제7권2호
  • /
  • Pages.209-216
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  • 2006
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  • 1229-9138(pISSN)
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  • 1976-3832(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

OPTIMAL PROCESSING AND SYSTEM MANUFACTURING OF A LASER WELDED TUBE FOR AN AUTOMOBILE BUMPER BEAM

  • Suh, J. (Korea Institute of Machinery & Materials) ;
  • Lee, J.H. (Korea Institute of Machinery & Materials) ;
  • Kang, H.S. (Korea Institute of Machinery & Materials) ;
  • Park, K.T. (Korea Institute of Machinery & Materials) ;
  • Kim, J.S. (Korea Institute of Machinery & Materials) ;
  • Lee, M.Y. (Technical Institute of Sungwoo Hitech Company, LTD) ;
  • Jung, B.H. (Technical Institute of Sungwoo Hitech Company, LTD)
  • 발행 : 2006.04.01
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초록

A study has been conducted for an optimal processing and an apparatus for manufacturing a laser welded tube for one-body formed bumper beam. The tube dimensions used in calculation were the thickness of 1.4 mm, the diameter of 105.4 mm and the length of 2000 mm. The tube was formed of a cold rolled high strength steel plate(tensile strength of 600 MPa). The two-roll bending method was the optimal tube forming process in comparison with the UO-bending method, the bending method on the press brake, the multi-step continuous roll-forming method and the 3-roll bending method. Monitoring of the welding quality was conducted and the seam tracking along the butt-joint lengthwise to the tube axis was also examined. The longitudinal butt-joint was welded by using a $CO_2$ laser welding machine equipped with a seam tracker and a plasma sensor. The $CO_2$ laser tube welding machine could be used for precise seam tracking and real-time monitoring of the welding quality. As a result, the developed laser welded tube could be used for a one-body formed automobile bumper beam.

키워드

참고문헌

  1. Aubry, P. , Coste, F., Fabbro, R. and Frechett, D. (2000). 2D YAG welding on non-liner trajectories with 3D camera seam tracker following for automotive applications. Laser Appls. Auto Industry, Section F-ICALEO 2000, 21-27
  2. Beersiek, J., Poprawe, R., Schulz, W., Hongping Gu, Mueller, R. E. and Duley, W. W. (1996). On-line monitoring of penetration depth in laser beam welding. ICALEO '96, Laser Institute of America, 286-295
  3. Beyer, E. and Abels, P. (1992). Process monitoring in laser materials processing. Laser Advanced Materials Processing (LAMP92), 433-438
  4. Coste, F., Aubry, P., Fabbro, R. and Dubois T. (1998). A rapid seam tracking device for YAG and $CO_2$ high speed laser welding. Section F-ICALEO 1998, Laser Institute of America, 217-223
  5. Gatzweiler, W., Maischner, D. and Beyer, E. (1998). Online plasma diagnostics for process-control in welding with $CO_2$ laser. Society of Photo-Optical Instrumentation Engineers, 1020, 142-148
  6. Gu, H. and Duley, W. W. (1996). Resonant acoustic emission during laser welding of metals. J. Phys. D: Appl. Phys., 29, 550-555 https://doi.org/10.1088/0022-3727/29/3/010
  7. Ishide T. (1994). High power YAG laser welding and its in-process monitoring using optical fibers. Proc. Essential Comparative Literature and Theory, 183-192
  8. Li, L. and Steen, W. M. (1992). Non-contact coustic emission monitoring during laser processing. ICALEO '92, Laser Institute of America, 719-728
  9. Matsunawa, A., Kim, J. D., Takemoto and Katayama, S. (1995). Spectroscopic studies on laser-induced plume of aluminium alloy. ICALEO '95, Laser Institute of America, 80, 719-728
  10. Nam, G. J., Park, K. Y. and Lee, K. D. (2002). Study on the characteristics of the plasma induced by lap-joint $CO_2$ laser welding of automotive steel sheets. J. Korea Society of Laser Processing, 5-1, 33-42 (in Korean)
  11. Ono, M., Nakada, K. and Kosuge, S. (1992). An investigation on $CO_2$ laser-induced plasma. J. Japan Welding Society 10, 2, 239-245 (in Japanese) https://doi.org/10.2207/qjjws.10.239
  12. Watanabe, M., Okado, H., Inoue, T., Nakamura, S. and Matsunawa, A. (1992). Features of various in-process monitoring methods and their applications to laser welding. ICALEO '95, Laser Institute of America, 80, 719-728