Method for the manufacture of diaphragm bellows

Details Method for the manufacture of diaphragm bellows Method for the manufacture of diaphragm bellows

1980-10-29

1982-12-21

Gilden, Leon

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

72 57, 72 61, B21D 1506

Patent

active

043642527

ABSTRACT:
This invention is a method for manufacturing a diaphragm bellows on a continuous basis, wherein by giving a pressure to the inside of a metallic pipe having the desired diameter, the pipe is bulged in the outer circumferential direction between opposed molds which hold the pipe and, by compressing the bulged part between molds, is formed into a steep projection of the desired shape. After removing the molds the pipe is pressed from both ends thereof to form the steep projections into flat shapes to obtain the desired diaphragm bellows and the above manufacturing procedure is repeated.

REFERENCES:
patent: 3339386 (1967-09-01), Homfeldt
patent: 3704983 (1972-12-01), Tellot

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