Chamber free plasma welding root side purging method and apparat

Details Chamber free plasma welding root side purging method and apparat Chamber free plasma welding root side purging method and apparat

1993-11-29

1995-11-28

Paschall, Mark H.

Electric heating

Metal heating

By arc

21912145, 21912159, 21912151, B23K 1000

Patent

active

054710316

ABSTRACT:
A method and apparati are presented for non-chamber root side purging in fusion welding of oxygen reactive metals which require that the molten weld zone and local solid areas of the weld seam remaining at high temperatures be shielded from normal atmosphere to prevent degradation of the welded area. The apparatus provides an inert atmosphere to the root side of a weld joint through a porous medium whereby the jet-like thrust of the plasma arc actually draws the continuously supplied inert atmosphere into the path of the molten or high temperature solid weld zone. The porous medium is configured so it can be placed at the borders of the weld seam and substantially parallel to the seam without restricting the view of the root side of the seam. The inert gas is dispersed evenly through the porous media and across the weld seam, at the point of arc penetration and in front of and behind the arc. The apparatus can be constructed so as to limit the amount of inert gas flow and can be mobile and travel synchronously with the welding arc.

REFERENCES:
patent: 2844707 (1958-07-01), Mazzagatti
patent: 2918563 (1959-12-01), Ternisien et al.
patent: 3317704 (1967-05-01), Browning
patent: 3450857 (1969-06-01), Webb
patent: 3614378 (1971-10-01), Goodell
patent: 4023006 (1977-05-01), West et al.
patent: 4078167 (1978-03-01), Baras et al.
patent: 4278864 (1981-07-01), DeFacci et al.
patent: 4866236 (1989-09-01), De Nale et al.
patent: 5290989 (1994-03-01), Zibilich et al.

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