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Proceedings Paper

Process stabilization by dual focus laser welding of aluminum alloys for car body
Author(s): Kimihiro Shibata; Takakuni Iwase; Hiroki Sakamoto; Friedrich H. Dausinger; Bernd Hohenberger; Matthias Mueller; Akira Matsunawa; Naoki Seto
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Paper Abstract

Aluminum alloys were welded using dual focus beams formed with two Nd:YAG lasers with the aim of obtaining a stable welding process. The relationship between the configuration of the spot beams and the quality of the weld beads was investigated using X-ray and high-speed camera observations. The number of pores was clearly related to the ratio of the keyhole depth to the keyhole opening. A larger keyhole opening and/or a shallower keyhole depth resulted in a smaller number of pores caused by instability of the weld pool. Based on the investigation, a car body component was welded with a dual focus beam system. The results show that aluminum car body panels can be welded stably at high speed with little distortion under optimum conditions.

Paper Details

Date Published: 2 September 2003
PDF: 9 pages
Proc. SPIE 5121, Laser Processing of Advanced Materials and Laser Microtechnologies, (2 September 2003); doi: 10.1117/12.515627
Show Author Affiliations
Kimihiro Shibata, Nissan Motor Co., Ltd. (Japan)
Takakuni Iwase, Nissan Motor Co., Ltd. (Japan)
Hiroki Sakamoto, Nissan Motor Co., Ltd. (Japan)
Friedrich H. Dausinger, Univ. Stuttgart (Germany)
Bernd Hohenberger, Univ. Stuttgart (Germany)
Matthias Mueller, Univ. Stuttgart (Germany)
Akira Matsunawa, Osaka Univ. (Japan)
Naoki Seto, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 5121:
Laser Processing of Advanced Materials and Laser Microtechnologies
Friedrich H. Dausinger; Vitali I. Konov; Vladimir Yu. Baranov; Vladislav Ya. Panchenko, Editor(s)

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