Welding torch with dual gas shielding

Details Welding torch with dual gas shielding Welding torch with dual gas shielding

1985-03-13

1986-01-28

Albritton, C. L.

Electric heating

Metal heating

Nonatmospheric environment at hot spot

21913742, B23K 916

Patent

active

045673438

ABSTRACT:
A welding torch is shown with a dual shield gas flow for preventing flux buildup on the weld area for welds in confined spaces. The torch has a wire conduit for receiving an advancing supply of welding wire. The wire conduit has a curved end portion for guiding the welding wire toward the weld area and has an opening through which the welding wire extends for welding. A primary gas conduit directs the flow of primary shield gas and has an open, gas dispensing end adjacent the wire conduit opening. A secondary shield gas source located rearward of the gas dispensing end directs the flow of secondary shield gas in the direction of the weld area. The secondary shield gas flow is arranged to surround the primary gas flow in the direction of the weld. The orientation of the primary gas exiting the primary gas conduit induces the flow of secondary gas to change direction to provide additional gas shielding for the weld area.

REFERENCES:
patent: 1098119 (1914-05-01), Kongsbak
patent: 1755882 (1930-04-01), Krebs
patent: 1925656 (1933-09-01), Duitz
patent: 1981624 (1934-11-01), Kehl
patent: 2356048 (1944-08-01), Goddeau
patent: 2570386 (1951-10-01), Scheller
patent: 2859328 (1958-11-01), Sohn
patent: 3803381 (1974-04-01), Bernard et al.
patent: 4254322 (1981-03-01), Asano

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