Characterized by high conversion efficiency, small size, light weight and a long lifetime, high power diode lasers are currently being developed for application to various types of metal fabrication, such as welding. In this report, a 4kW high power direct diode laser was used to weld aluminum alloys, which are the focus of increasing attention from the automobile industry because of their light weight, high formability and easy recyclability. The applicability of a direct diode laser to aluminum alloy bead-on and lap-fillet welding was studied under various welding conditions. A sound bead without cracks was successfully obtained when 1mm thick aluminum alloy was welded by bead-on welding at a speed of 5m/min. Moreover, the bead cross section was heat conduction welding type rather than the keyhole welding type of conventional laser welding. Investigation of the welding phenomena with a high-speed video camera showed no spattering or laser plasma, so there was no problem with laser plasma damaging the focusing lens despite the diode laser’s short focusing distance.
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ICALEO 2002: 21st International Congress on Laser Materials Processing and Laser Microfabrication
October 14–17, 2002
Scottsdale, Arizona, USA
ISBN:
978-0-912035-72-7
PROCEEDINGS PAPER
Applicability of a high power diode laser to aluminum alloy welding Available to Purchase
Abe Nobuyuki;
Abe Nobuyuki
1
Joining and Welding Research Institute, Osaka University
11-1 Mihogaoka Ibaraki, Osaka 567-0047, JAPAN
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Morikawa Atsuhito;
Morikawa Atsuhito
1
Joining and Welding Research Institute, Osaka University
11-1 Mihogaoka Ibaraki, Osaka 567-0047, JAPAN
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Maeda Koichi;
Maeda Koichi
2
Research & Development Center, Sumitomo Light Metal Industries, Ltd.
3-1-12 Chitose, Minato-ku, Nagoya 455-8670, JAPAN
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Namba Keizo
Namba Keizo
2
Research & Development Center, Sumitomo Light Metal Industries, Ltd.
3-1-12 Chitose, Minato-ku, Nagoya 455-8670, JAPAN
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Published Online:
October 01 2002
Citation
Abe Nobuyuki, Morikawa Atsuhito, Maeda Koichi, Namba Keizo; October 14–17, 2002. "Applicability of a high power diode laser to aluminum alloy welding." Proceedings of the ICALEO 2002: 21st International Congress on Laser Materials Processing and Laser Microfabrication. ICALEO 2002: 21st International Congress on Laser Materials Processing and Laser Microfabrication. Scottsdale, Arizona, USA. (pp. 158972). ASME. https://doi.org/10.2351/1.5065623
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