Equal channel angular extrusion method

Details Equal channel angular extrusion method Equal channel angular extrusion method

2005-04-26

2005-04-26

Tolan, Ed (Department: 3725)

Metal deforming

By extruding through orifice

C072S272000, C072S364000

Reexamination Certificate

active

06883359

ABSTRACT:
According to one embodiment of the present invention, an equal channel angular extrusion (ECAE) method includes extruding a billet of material along a first axis in a first orientation through an ECAE die, extruding the billet along the first axis in a second orientation through the ECAE die, the second orientation oriented approximately 180° from the first direction, extruding the billet along the first axis in a third orientation through the ECAE die, the third orientation oriented approximately 90° from the second orientation, and extruding the billet along the first axis in a fourth orientation through the ECAE die, the fourth orientation oriented approximately 180° from the third orientation.

REFERENCES:
patent: 5513512 (1996-05-01), Segal
patent: 5600989 (1997-02-01), Segal et al.
patent: 5809393 (1998-09-01), Dunlop et al.
patent: 5826456 (1998-10-01), Kawazoe et al.
patent: 5904062 (1999-05-01), Semiatin et al.
patent: 6723187 (2004-04-01), Segal et al.

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