Friction-actuated extrusion

Details Friction-actuated extrusion Friction-actuated extrusion

B - Operations, Transporting

21

C

205/40

B21C 25/02 (2006.01) B21C 23/00 (2006.01)

Patent

CA 1195289

ABSTRACT In continuous friction-actuated extrusion, especially Conform extrusion of copper, at least part of the tooling is made from aged nickel-chromium base alloy (which is preferably cold-worked before aging to give a yield strength of at least l500MN/m2 at 20°C) and which is capable of sustaining an adherent oxide film. The preferred alloy is "Inconel Alloy 718". Despite lower hardness, the tooling has better service life than conventional special-steel tooling.

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