Abstract

Nd:YAG laser light beams from three oscillators were separately condensed and then combined at a processing point to enhance the processing ability of the laser system. In this system one or more laser beams must be inclined. An inclined laser beam forms an inclined plume and an inclined penetration under conditions of high laser peak power and high energy input (region I). From the direction and size of the plume, the penetration of a weld bead can be evaluated. In the case of two or three laser beam combinations, keyholes exist for each laser beam separately in region I.

© 1996 Optical Society of America

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References

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  1. H. Miura, S. Fujinaga, T. Narikiyo, A. Ohmori, K. Okino, S. Watanabe, in Proceedings of the VI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference (Laser Institute of America, Orlando, Fla., 1996), pp. 27–38.
  2. H. Miura, S. Fujinaga, T. Narikiyo, in Proceedings of the International Conference on Precision Engineering ’95 (Gintic Institute of Manufacturing Technology, Singapore, 1995), pp. 155–158.
  3. A. Matsunawa, in Proceedings of the International Congress on Applications of Lasers and Electro-Optics ’90 (Laser Institute of America, Orlando, Fla., 1990), pp. 313–324.

Fujinaga, S.

H. Miura, S. Fujinaga, T. Narikiyo, A. Ohmori, K. Okino, S. Watanabe, in Proceedings of the VI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference (Laser Institute of America, Orlando, Fla., 1996), pp. 27–38.

H. Miura, S. Fujinaga, T. Narikiyo, in Proceedings of the International Conference on Precision Engineering ’95 (Gintic Institute of Manufacturing Technology, Singapore, 1995), pp. 155–158.

Matsunawa, A.

A. Matsunawa, in Proceedings of the International Congress on Applications of Lasers and Electro-Optics ’90 (Laser Institute of America, Orlando, Fla., 1990), pp. 313–324.

Miura, H.

H. Miura, S. Fujinaga, T. Narikiyo, A. Ohmori, K. Okino, S. Watanabe, in Proceedings of the VI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference (Laser Institute of America, Orlando, Fla., 1996), pp. 27–38.

H. Miura, S. Fujinaga, T. Narikiyo, in Proceedings of the International Conference on Precision Engineering ’95 (Gintic Institute of Manufacturing Technology, Singapore, 1995), pp. 155–158.

Narikiyo, T.

H. Miura, S. Fujinaga, T. Narikiyo, in Proceedings of the International Conference on Precision Engineering ’95 (Gintic Institute of Manufacturing Technology, Singapore, 1995), pp. 155–158.

H. Miura, S. Fujinaga, T. Narikiyo, A. Ohmori, K. Okino, S. Watanabe, in Proceedings of the VI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference (Laser Institute of America, Orlando, Fla., 1996), pp. 27–38.

Ohmori, A.

H. Miura, S. Fujinaga, T. Narikiyo, A. Ohmori, K. Okino, S. Watanabe, in Proceedings of the VI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference (Laser Institute of America, Orlando, Fla., 1996), pp. 27–38.

Okino, K.

H. Miura, S. Fujinaga, T. Narikiyo, A. Ohmori, K. Okino, S. Watanabe, in Proceedings of the VI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference (Laser Institute of America, Orlando, Fla., 1996), pp. 27–38.

Watanabe, S.

H. Miura, S. Fujinaga, T. Narikiyo, A. Ohmori, K. Okino, S. Watanabe, in Proceedings of the VI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference (Laser Institute of America, Orlando, Fla., 1996), pp. 27–38.

Other (3)

H. Miura, S. Fujinaga, T. Narikiyo, A. Ohmori, K. Okino, S. Watanabe, in Proceedings of the VI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference (Laser Institute of America, Orlando, Fla., 1996), pp. 27–38.

H. Miura, S. Fujinaga, T. Narikiyo, in Proceedings of the International Conference on Precision Engineering ’95 (Gintic Institute of Manufacturing Technology, Singapore, 1995), pp. 155–158.

A. Matsunawa, in Proceedings of the International Congress on Applications of Lasers and Electro-Optics ’90 (Laser Institute of America, Orlando, Fla., 1990), pp. 313–324.

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Figures (6)

Fig. 1
Fig. 1

Experimental setup for welding with one laser beam.

Fig. 2
Fig. 2

Typical plume aspects in welding with one laser beam.

Fig. 3
Fig. 3

Relationship between plume direction and welding conditions. PT, plume-direction transition.

Fig. 4
Fig. 4

Typical cross sections of weld beams.

Fig. 5
Fig. 5

Typical plume aspects and cross sections of weld beams in welding with two laser beams.

Fig. 6
Fig. 6

Typical plume aspects in welding with three laser beams.

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