Electric heating – Metal heating – By arc
Patent
1990-12-27
1993-07-13
Albritton, C. L.
Electric heating
Metal heating
By arc
21912164, 21912184, B23K 2600
Patent
active
052276058
ABSTRACT:
For laser welding in tubes of small diameter, protective gas is passed into the working zone by two currents originating from points situated on either side of this zone and converging towards it.
REFERENCES:
patent: 4839495 (1989-06-01), Kitera et al.
Boudot Cecile
Griffaton Jacques
Albritton C. L.
Framatome
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