Method and apparatus for swaging tubular material

Details Method and apparatus for swaging tubular material Method and apparatus for swaging tubular material

B - Operations, Transporting

21

D

205/25

B21D 41/04 (2006.01) B21K 21/12 (2006.01)

Patent

CA 1051824

M E T H O D A N D A P P A R A T U S F O R S W A G I N G T U B U L A R M A T E R I A L ABSTRACT OF THE DISCLOSURE The method and tool of this invention functions to reduce the ends of tubular material, such as oil or gas well drill pipe, particularly pipe having a flared end. The tool consists of a mandrel sleeve having an inner tapered surface, a series of conical rollers mounted in a roller cage within the mandrel so the rollers bear against the tapered surface. With the pipe inserted between the rollers and with relative rotational and axial movement between the pipe and the mandrel, the rollers will engage the surface of the pipe applying a swaging force to the pipe which is increases by the decreasing diameter caused by axial movement of the pipe and rollers along the tapered surface.

265716

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