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Metal honeycomb substrates for chemical and thermal applications

  • US 7,608,344 B2
  • Filed: 07/29/2004
  • Issued: 10/27/2009
  • Est. Priority Date: 07/30/2003
  • Status: Active Grant
First Claim
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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.

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