Method of encasing a structure in metal
AssigneeCorning Incorporated
InventorsJohn M. Barnard, Ronald E. Johnson, Kathleen A. Wexell
Life of this patent
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Abstract
An improved method is disclosed for encasing an object in a shell or layer of outer material. The encased object and the outer material are formed from sinterable metal or ceramic particulate material. Both the object to be encased and the shell or encasement are formed by extrusion. Novel methods are disclosed by which the object and the outer material can be simultaneously formed by co-extruding the sinterable particulate materials, or by extruding the outer layer onto a formed object using the die assembly of the invention.
Claims35
A method of forming an integrally encased cellular structure by
- a) providing an apparatus comprising a die body and a shell or encasement forming means;
- b) extruding a first batch material longitudinally through the die body to form a cellular structure
- c) passing a second batch material longitudinally through the shell forming means concurrently with the first batch material and controlling the flow of the second batch material whereby the second batch material is engaged to and is knitted with the first batch material to form a shell or encasement of the second batch material around the cellular structure, wherein the second batch material is compositionally different from the first batch material and is comprised of sinterable particulates or powders comprised of metal.
A method of forming an integrally encased cellular structure by
- a) providing an apparatus comprising a die body, the die body comprising a central portion and a peripheral portion;
- b) extruding a first batch material longitudinally through the central portion of the die body;
- and
- c) concurrently passing a second batch material longitudinally through the peripheral portion of the die body and thereafter collecting the second batch material within a reservoir, wherein the second batch material is compositionally different from the first batch material;
- e) causing the second batch material to flow through an adjustable control gap for adjusting the volume of the flow;
- f) causing the second batch to flow through a variable width slot which for varying the thickness of the shell;
- and,
- g) causing the flow of the first batch to engage with and knit with the second batch material to provide a honeycomb structure with an integral outer casement thereon.
Dependencies are inferred from the claim text.