Process for the manufacture of cladded metal pipes

Details Process for the manufacture of cladded metal pipes Process for the manufacture of cladded metal pipes

1997-05-07

1999-08-24

Echos, P. W.

Metal working

Method of mechanical manufacture

Shaping by direct application of fluent pressure

29523, 228131, 228136, 228265, B23P 1700, B21D 3900

Patent

active

059409517

ABSTRACT:
A process for the manufacture of cladded metal pipes facilitates joining of a tube blank and a coaxially disposed pipe section received therein, for subsequent extrusion of a resultant tube blank-pipe combination to form an internally-clad pipe of desired dimension. The pipe section, which is inserted into the tube blank, is expanded radially by internally directed pressure, while force is axially applied to maintain the expansion of the pipe section following removal of the applied internal pressure and axial force. A mechanically joined tube blank-pipe combination thus formed is extruded to form a finished pipe of desired profile in which a diffusion bond is present between material layers comprising the internally-clad pipe corresponding to the pipe section and the tube blank.

REFERENCES:
patent: 4359811 (1982-11-01), Monroe
patent: 4744504 (1988-05-01), Turner

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