Method of producing a corrugated, multi-ply metal bellows

Details Method of producing a corrugated, multi-ply metal bellows Method of producing a corrugated, multi-ply metal bellows

1982-05-24

1984-06-12

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Shaping by direct application of fluent pressure

72 59, 72121, B23P 1700, B21D 1506, B21D 302

Patent

active

044533047

ABSTRACT:
A method of producing a multi-ply metal bellows wherein the plies are telescoped together to form a multi-ply tube and annular grooves are inwardly rolled in the multi-ply tube at spaced intervals therealong while the tube is supported internally on either side of the grooves, as they are rolled, and is held against substantial deformation. Crest and root constraining dies are assembled around the multi-ply tube and in the grooves and then the tube is pressurized internally, while the dies are pushed together, so that the undeformed portions of the tube bulge outwardly into the dies. The bellows is then completed by removing the dies and putting spacing shims in between the bulged convolution crest portions and then pushing the ends of the tubes until the shims are lightly held between the bulges.

REFERENCES:
patent: 370876 (1887-10-01), Kane
patent: 3015354 (1962-01-01), Wood
patent: 3260088 (1966-07-01), Gruetter et al.
patent: 3473358 (1969-10-01), Marcovitch
patent: 3704983 (1972-12-01), Tellot
patent: 3832877 (1974-09-01), Tominaga et al.
patent: 4215559 (1980-08-01), Kuypers
patent: 4364252 (1982-12-01), Koizumi

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