Method of forming tubular metal products

Details Method of forming tubular metal products Method of forming tubular metal products

1976-01-27

1978-09-19

Gilden, Leon

Metal deforming

By use of tool acting during relative rotation between tool...

Tool orbiting or rotating about an axis

72 78, B21D 302

Patent

active

041144317

ABSTRACT:
A method of fabricating seamless tubes of malleable metal is provided comprising supporting an annular work piece of greater wall thickness than the required thickness of the completed tube within a die ring in encircling engagement with its outer surface and applying an axial pull to one end of said work piece to draw it axially through said die ring while simultaneously rolling the interior of the work piece with a forming tool having a plurality of centrifugally loaded rollers so as to enlarge the internal diameter and lengthen the work piece axially in the direction of said axial pull.

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