Method of forming a high temperature, high pressure thin foil se

Details Method of forming a high temperature, high pressure thin foil se Method of forming a high temperature, high pressure thin foil se

1979-10-10

1984-10-16

Albritton, C. L.

Electric heating

Metal heating

For bonding with pressure

219 7816, 219 8621, B23K 1108

Patent

active

044777108

ABSTRACT:
A vacuum or high pressure seal operative at high temperatures is formed by placing a thin metal foil over an opening, and forming an electrical seam weld at the interface of the surface and the foil by guiding a needle-like electrode along a path around the opening at a substantially constant rate, with substantially constant pressure being applied to the electrode as it is moved along the path. When supported, the seal is capable of withstanding high pressures, say ten atmospheres, at high temperatures, say 500.degree. C.

REFERENCES:
patent: 1860172 (1932-05-01), Chapman
patent: 3098928 (1963-07-01), Wagner
patent: 3359402 (1967-12-01), Rieppez
patent: 3458683 (1969-07-01), Canonico
patent: 4117300 (1978-09-01), Ricards

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