Extrusion die and method for making same

Plastic article or earthenware shaping or treating: apparatus – Means providing a shaping orifice – Single inlet – plural shaping orifices

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Details

29460, 295272, 76107R, 264 36, 425467, 428933, 428936, B29F 304

Patent

active

042355834

ABSTRACT:
A method is provided for forming an extrusion die of the type used to form a ceramic monolith having thin walls defining a multiplicity of parallel tubular passageways with at least about 100 passageways per square inch, the die having a feed face and a discharge face, the feed face having a plurality of feed holes extending partially through said die and interconnecting with a network of grid slots in the discharge portion of said die formed by a plurality of grid pins which define the slot width and the wall thickness, shape and size of said passageways. The method involves the steps of forming the width of the slots larger than the desired wall thickness of the passageways, and metal plating the slot defining surfaces of the grid pins to obtain the slot width corresponding to the desired wall thickness. Plating is accomplished by the electroless plating technique using a metal selected from the group consisting of nickel, chromium, cobalt and cobalt-nickel. The resulting die has a substantially uniform coating of wear resistant metal which is strippable for replating and continued die use.

REFERENCES:
patent: 1310509 (1919-07-01), Specht
patent: 1817680 (1931-08-01), Pratt
patent: 1944758 (1934-01-01), Roux
patent: 2412698 (1946-12-01), Horst
patent: 2494970 (1950-01-01), Shea
patent: 2532283 (1950-12-01), Brenner et al.
patent: 2588421 (1952-03-01), Shepard
patent: 2882759 (1959-04-01), Altwicker
patent: 2997783 (1961-08-01), Crehan et al.
patent: 3038420 (1962-06-01), Immohr
patent: 3156950 (1964-11-01), Walton
patent: 3174183 (1965-03-01), Siegel
patent: 3251316 (1966-05-01), Forth
patent: 3339588 (1967-09-01), Nilles
patent: 3373751 (1968-03-01), Wallberg
patent: 3433049 (1969-03-01), Naeser et al.
patent: 3566642 (1971-03-01), Whitacre
patent: 3606665 (1971-09-01), Glucoft
patent: 3824196 (1974-07-01), Benbow
patent: 3837783 (1974-09-01), Bagley
patent: 3877272 (1975-04-01), Brunosson
patent: 3905743 (1975-09-01), Bagley
patent: 3938925 (1976-02-01), Lees
patent: 4118456 (1978-10-01), Blanding et al.

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