Method of producing a coating on a core

Details Method of producing a coating on a core Method of producing a coating on a core

B - Operations, Transporting

21

C

205/7, 18/771

B21C 23/26 (2006.01) B29F 3/10 (1980.01)

Patent

CA 1119371

ABSTRACT OF THE DISCLOSURE A method of providing a member having a metal core with a nonferrous metal coating wherein the metal core affords strength and rigidity while the nonferrous outer coating, or cladding, provides a non-corrodible surface and wherein the cladding is of such uniform thickness that final forming of the member may be performed without pe- netrating or breaking the coating, or exposing the core. The cladding is applied by extruding the non-ferrous metals in a cross-axis die where it reaches a plastic state and passing the metal core through the plastic non- ferrous metal in the die with the high extrusion pressure creating heat to render the nonferrous metal in a plastic state and further extruding the nonferrous metal around the metal core as it exits from the die, whereby to obtain a wrought structure of the clad coating, without reducing the cross-sectional area of the core during the extrusion operations.

314785

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