한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제21권7호
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  • Pages.136-144
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  • 2004
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  • 1225-9071(pISSN)
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  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

60kgf/$\textrm{mm}^2$급 자동차 범퍼빔용 레이저 용접 튜브 제조기술 및 장치연구

Production of Laser Welded Tube for Automobile Bumper Beam from 60kgf/$\textrm{mm}^2$Grade Steel Sheet

  • 발행 : 2004.07.01
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초록

Optimal process and system to produce the laser welded tube for one body formed bumper beam are studied. The calculated size of tube is a thickness of 1.4mm, diameter of 105.4mm and length of 2000mm. The tube is shaped from a cold rolled high strength steel sheet(tensile strength: 60kgf/$\textrm{mm}^2$ grade). Two roll bending method is the optimal tube shaping process compared to UO-bending, bending on press brake, multi-step continuous roll forming and 3 roll bending methods. Weld quality monitoring and seam tracking along the butt-joint lengthwise to the tube axis are also studied. The longitudinal butt-joint is welded by the $CO_2$ laser welding system equipped with a seam tracker and plasma sensor. The constructed $CO_2$laser tube welding system can be used for the precision seam tracking and the real-time monitoring of weld quality. Finally, the obtained laser welded tube can be used for one-body formed automobile bumper beam.

키워드

참고문헌

  1. Aubry, P., Coste, F., Fabbro, R., Frechett, D., '2D YAG welding on non-liner trajectories with 3D camera seam tracker following for automotive applications,' Laser Appls. Auto Industry, Section F-ICALEO 2000, pp. 21-27, 2000
  2. Coste, F., Aubry, P., Fabbro, R., Dubois, T., 'A Rapid Seam Tracking device for YAG and $CO_2$ high speed Laser Welding,' Section F-ICALEO 1998, pp. 217-223, 1998
  3. Beyer, E. and Abels, P., 'Process Monitoring in Laser Materials Processing,' Laser Advanced Materials Processing(LAMP92), pp. 433-438, 1992
  4. Matsunawa, A., Kim, J. D., Takemoto and Katayama, S., 'Spectroscopic Studies on Laser-Induced Plume of Aluminium Alloy,' ICALEO '95 Laser Institute of America 80, pp. 719-728, 1995
  5. Gatzweiler, W., Maischner, D., Beyer, E., 'On-line Plasma Diagnostics for Process-control in Welding with $CO_2$ Laser,' SPIE 1020, pp. 142-148, 1998
  6. Beersiek, J., Poprawe, R., Schulz, W., Gu Hongping, Mueller, R. E. and Duley, W. W., 'On-line Monitoring of Penetration Depth in Laser Beam Welding,' ICALEO '96 Laser Institute of America, 1996
  7. Li, L., Steen, W. M., 'Non-Contact Acoustic mission Monitoring During Laser Processing,' ICALEO '92 Laser Institute of America, pp. 719-728, 1992
  8. Gu, H. and Duley, W. W., 'Resonant Acoustic Emission During Laser Welding of Metals,' J. of Phys. D : Appl. Phys., Vol. 29, pp. 550-555, 1996 https://doi.org/10.1088/0022-3727/29/3/010
  9. Ishide, 'High Power YAG Laser Welding and Its In-Process Monitoring Using Optical Fibers,' Proc. ECLAT, pp. 183-192, 1994
  10. Watanabe, M., Okado, H., Inoue, T., Nakamura, S. and Matsunawa, A., 'Features of Various In-Process Monitoring Methods and Their Applications to Laser Welding,' ICALEO '95 Laser Institute of America 80, pp. 719-728, 1992
  11. Ono, M., Nakada, K. and Kosuge, S., 'An Investigation on $CO_2$ Laser-Induced Plasma,' 日本溶接學會 論文集, Vol. 10, No. 2, pp. 239-245, 1992