Protective gas shroud for welding

Details Protective gas shroud for welding Protective gas shroud for welding

1999-03-01

2000-03-14

Mills, Gregory

Electric heating

Metal heating

By arc

219 74, 21912164, 21912184, 21912186, B23K 2612, B23K 2620

Patent

active

060375639

ABSTRACT:
A protective gas shroud for welding is provided by: positioning an article into a chamber having an opening at the top to permit welding of the article; introducing argon into the body of the chamber to act as a protective gas shroud for the article during welding; introducing helium into the open top of the chamber to assist in maintaining a protective gas shroud around the article during welding; and welding the article within the protective gas shroud.

REFERENCES:
patent: 1746191 (1930-02-01), Devers
patent: 4078167 (1978-03-01), Banas et al.
patent: 4162390 (1979-07-01), Kelly
patent: 4845331 (1989-07-01), Yeo et al.
patent: 4990741 (1991-02-01), Moores et al.
patent: 5106010 (1992-04-01), Stueber et al.
patent: 5170027 (1992-12-01), Brodersen
patent: 5319179 (1994-06-01), Joecks et al.
patent: 5554837 (1996-09-01), Goodwater et al.
patent: 5685771 (1997-11-01), Kleppen

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