Laser welding processed

Details Laser welding processed Laser welding processed

2005-05-31

2005-05-31

Heinrich, Samuel M. (Department: 1725)

Electric heating

Metal heating

By arc

C219S121640

Reexamination Certificate

active

06900410

ABSTRACT:
In a laser welding method, occurrence of weld defects is effectively prevented, and a high-quality weld joint is provided, and in addition, a wide range of material processes including a laser-using de p-penetration welding technique can be implemented.In keyhole welding using a laser performing output pulse modulation, the welding is conducted in accordance with a frequency conforming to a natural frequency of a metal molten pool.

REFERENCES:
patent: 6410882 (2002-06-01), Okada
patent: 1075891 (2001-02-01), None
patent: 7-124772 (1995-05-01), None
Isao Kawaguchi, et al., “Shin-Tokekomi Yosetsubu de Hassei sura Porosityno Teigen”; Dai-Shutsuryoku CO2Laser Yousetsu Gensho ni kansuru Kenkyu (Dai 2 hou), Yousetsu Gakkai Zenkoku Taikai Kouen Gaiyou-Dai 66 shuu-, Zaidan Houjin Yousetsu Gakkai, pp. 48 to 49, Mar. 2000.
T. Klein et al., “Forced oscillations of the keyhole in penetration laser beam welding”, Journal of Physics, D. Applied Physics, The Institute of Physics, 1996 (96), vol. 29, pp. 322 to 332.

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