Dual-gas shielding method

Details Dual-gas shielding method Dual-gas shielding method

1978-10-23

1979-09-04

Goldberg, E. A.

Electric heating

Metal heating

Nonatmospheric environment at hot spot

219 75, B23K 916

Patent

active

041669401

ABSTRACT:
The disclosure of the present application relates to an improved method of open-arc welding. According to the present method, the outer shield of a double-shield welding system consists of a stream of gas formed in a shield concentric with the inner shield. This method is distinguished by the fact that atmospheric air may be used as the outer shield gas because the outer-shield velocity is so regulated and so positioned as to prevent the air from being drawn into the weld area, the outer shield gas velocity nearly approximating the inner shield gas velocity.

REFERENCES:
patent: 2859329 (1958-11-01), Lesnewich
patent: 2903559 (1959-09-01), Wempe
patent: 2919341 (1959-12-01), Roth
patent: 3053954 (1962-09-01), Gorman
patent: 3495066 (1970-02-01), Broyard
patent: 3692973 (1972-09-01), Oku

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