Patent ID: 7608344
Filing Date: 2009-10-27
Classification: B21C,B21J,B22F,C22F,Y10T

Abstract:
1. A method for making an extruded metal honeycomb article comprising the steps of: heating a metal feed stock to a temperature effective to provide a softened bulk metal feed charge, wherein the metal feed stock does not comprise a metal powder; forcing the feed charge into and through an array of feedholes provided in a body plate of a honeycomb extrusion die; thereafter forcing the feed from the feedholes through an intersecting array of discharge slots connecting with the feedholes in a discharge section of the honeycomb extrusion die, thereby to shape the charge into a metal extrudate comprising an interconnected wall structure forming channels and channel walls for a metal honeycomb; and cooling the extrudate to a temperature below the softening temperature of the metal feed stock.