Electric heating – Metal heating – By arc
Patent
1977-11-18
1978-10-17
Truhe, J. V.
Electric heating
Metal heating
By arc
21913021, B23K 900
Patent
active
041210875
ABSTRACT:
A method and apparatus is provided for laser welding which utilizes the power reflected by the surface being welded to control the power input to the weld. A beam of laser light is projected on the surface to be welded and the power of the light reflected by the surface is measured by a wattmeter placed in the path of the reflected beam. The output from the wattmeter is used to control the laser power per unit area projected on the weld. In one embodiment the wattmeter output is used to control the speed of the skate motor which moves the surface being welded. In another embodiment, the wattmeter output is used to control the output of the laser.
REFERENCES:
patent: 3196246 (1965-07-01), El-Kareh
patent: 3627972 (1971-12-01), Iceland et al.
patent: 4005308 (1977-01-01), Chaney et al.
Birnbaum George
Iceland William F.
Malmuth Norman D.
Bell Fred E.
Humphries L. Lee
Malin Craig O.
Rockwell International Corporation
Truhe J. V.
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