Process for producing tungsten heavy alloy sheet by direct hydro

Details Process for producing tungsten heavy alloy sheet by direct hydro Process for producing tungsten heavy alloy sheet by direct hydro

1988-01-14

1988-08-23

Stallard, Wayland

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Liquid phase sintering

75 05AB, 419 34, 419 46, B22F 922

Patent

active

047659513

ABSTRACT:
A process is disclosed for producing a sheet of tungsten heavy alloy which comprises forming a solution of chemical compounds containing the metal values of the alloy in the correct proportion as in the alloy, forming from the solution a precipitate of the compounds containing the metal values, removing the precipitate from the resulting liquor an forming a planar cake of the precipitate, drying the cake, and reducing the compounds in the cake to their respective metals wherein each of the resulting reduced particles is an admixture of the alloy components and sintering the cake to a density equal to or greater than about 90% of the theoretical density of the alloy to form the sheet.

REFERENCES:
patent: 2467675 (1949-04-01), Kurtz et al.
patent: 2776887 (1957-01-01), Kelly, Jr. et al.
patent: 3176386 (1965-04-01), Grant et al.
patent: 3310400 (1967-03-01), Alexander et al.
patent: 3318696 (1967-05-01), Krock et al.
patent: 3997331 (1976-12-01), Tither

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