Laser beam welding cane, particularly for the sealing of tubes

Details Laser beam welding cane, particularly for the sealing of tubes Laser beam welding cane, particularly for the sealing of tubes

1992-05-15

1993-10-12

Wasil, Daniel D.

Electric heating

Metal heating

By arc

376260, 21912183, B23K 2600

Patent

active

052528049

ABSTRACT:
The welding cane is equipped with a welding head (1) comprising an optical fiber (5) which emits a laser beam focused by an optical device (9) onto a wall (10) to be welded where a weld puddle (12) is formed. The welding head (1) comprises a photoelectric cell (45) illuminated by the scattered light around the end of the optical fiber. The signal emitted by the photoelectric cell (45) depends on the integrity of the optical fiber (5) and on the energy utilized for welding. It is used in the welding of a sealing sleeve in a pressurized water nuclear reactor steam generator tube.

REFERENCES:
patent: 3860863 (1975-01-01), Lamprecht
patent: 4983796 (1991-01-01), Griffaton
patent: 5006268 (1991-04-01), Griffaton

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