Method for controlling the shape of a molten pool in gas shield

Details Method for controlling the shape of a molten pool in gas shield Method for controlling the shape of a molten pool in gas shield

1976-09-17

1978-05-16

Goldberg, E. A.

Electric heating

Metal heating

By arc

219 70, 219 75, B23K 900

Patent

active

040900576

ABSTRACT:
A method is disclosed in which gas shield arc welding is carried out while applying a gas at a higher pressure than the shield gas to the rear part of the surface of molten metal during welding. By this method, welding proceeds while the molten pool is being maintained in the desirable shape, and the welding can be performed at high currents and speeds without causing bead defects such as undercut formation or humping.

REFERENCES:
patent: 1638336 (1927-08-01), Himes
patent: 2702846 (1955-02-01), Breymeier
patent: 3495066 (1970-02-01), Broyard
patent: 3715561 (1973-02-01), Hammarlind
patent: 3838243 (1974-09-01), Inagaki

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