Method and device for manufacturing a corrugated metal pipe

Details Method and device for manufacturing a corrugated metal pipe Method and device for manufacturing a corrugated metal pipe

1995-08-02

1997-04-15

Jones, David

Metal deforming

By application of fluent medium, or energy field

By kinetic energy of fluid or field

72 59, 72 62, 72370, B21D 2614

Patent

active

056198787

ABSTRACT:
The present invention relates to a method for forming a pipe with a corrugated wall by means of the electroforming technique. The method comprises the stage of forming, possibly partial, on the circumference of the pipe over a length of about one pitch of the corrugation. The corrugated deformation of the pipe is obtained by step-by-step forming after moving the forming mandrel longitudinally in the pipe. The invention also relates to a device for forming a corrugated pipe. In a variant, the device comprises a cylindrical mandrel on which a groove deepens over a circumference portion and continues at the depth of the corrugation to be formed.

REFERENCES:
patent: 3345732 (1967-10-01), Brower
patent: 3365522 (1968-01-01), Inoue
patent: 3372564 (1968-03-01), Crowdes
patent: 3503246 (1970-03-01), Shiokawa
patent: 3581456 (1971-06-01), Gere
patent: 3606780 (1971-09-01), Nagahara

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