Automatic Welding, 2013, №11



2013 №11 (14)

2013 №11 (16)

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«Автоматическая сварка», 2013, № 10-11, с. 101-107

Micro-welding of aluminum alloy by superposition of pulsed Nd:YAG laser and continuous diode laser

Y. Okamoto¹, S. Nakashiba², T. Sakagawa² and A. Okada¹

¹Graduate School of Natural Science and Technology, OkayamaUniversity. 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan. E-mail: okamoto@mech.okayama-u.ac.jp
²Advanced Laser Research Laboratory, Kataoka Corporation. 2-14-27 Shin-yokohama, Kohoku-ku, Yokohama 222-0033, Japan


Abstract
The combination of a pulsed Nd:YAG laser and a continuous diode laser could perform the high-performance micro-welding of aluminum alloy. A pulsed Nd:YAG laser was absorbed effectively from the beginning of laser scanning by pre-heating Nd:YAG laser pulse with the superposition of continuous LD, and wide and deep weld bead could be obtained with better surface integrity. 6 Ref., 2 Tables, 8 Figures.


Keywords: pulsed Nd:YAG laser, aluminum alloy, micro-welding


Received:                01.03.13
Published:               06.11.13


References
1. Zhang, J., Weckman, D.C., Zhou, Y. (2008) Effects of temporal pulse shaping on cracking susceptibility of 6061-T6 aluminum Nd:YAG laser welds. Welding J., 87, 18-30.
2. (2001) Chronological Scientific Tables 2001. Maruzen: National Astronomical Observatory Institute, 523.
3. Abe, N. (2003) Trend of direct materials processing with high power diode lasers. The Review of Laser Engineering, 31(5), 318-325.
4. Sakurai, T., Nakagawa, Y. (2004) Development of LD + YAG hybrid laser. In: Proc. of 62nd Laser Materials Processing Conf., 102-110.
5. Sakagawa, T., Okamoto, Y., Uno, Y. et al. (2009) High-efficiency welding of aluminum alloy by hybrid system combined pulsed Nd:YAG laser and diode laser. In: Proc. of 26th Int. Congress on Applications of Lasers & Electro-Optics, 1008-1014.
6. Haraguchi, S., Okamoto, Y., Uno, Y. et al. (2010) Investigation on welding phenomenon for aluminum alloy by superposition of pulsed YAG laser and diode laser. J. of Advanced Mechanical Design, Systems, and Manufacturing, 4(5), 875-882.