Method and apparatus for forming cross ribbed pipes

Details Method and apparatus for forming cross ribbed pipes Method and apparatus for forming cross ribbed pipes

1978-01-18

1979-05-15

Larson, Lowell A.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

72 98, B21D 5306

Patent

active

041539826

ABSTRACT:
A method and apparatus of forming ribbed pipes, after an initial pipe resssing in which bending of the rib of the plane perpendicular to the rolled pipe axis takes place, and straightening of the rib thenafter. Then on duplex metal pipes, the outside pipe is additionally compressed to the core pipe.
A tool for performing the aforementioned is equipped with a disk section for bending the rib, it is formed of a thrust disk and a straightening disk. When rolling a duplex metal pipe at least one compressing disk is placed therebetween.

REFERENCES:
patent: 3683656 (1972-08-01), Lewis

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