Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1994-09-28
1996-04-23
Seidel, Richard K.
Metal founding
Process
Shaping liquid metal against a forming surface
164103, 164112, 164333, B22D 1900
Patent
active
055094597
ABSTRACT:
A process for forming pressure cast alumina tile reinforced aluminum alloy rmor in which a silver coated aluminum disc is first inserted into a mold assembly, the mold assembly includes a base plate, a hollow steel die with a removable steel liner located on the base plate, a plug disposed on the base plate within the die cavity, and a punch movably disposed within the die cavity, the aluminum disc being inserted within the die cavity over the plug. Next, an alumina tile preform is prepared by cutting a plurality of alumina tiles and weaving the tiles together with a stiff steel wire. The alumina tile preform is inserted over the silver coated aluminum disc in the cavity of mold assembly. The steel die, the plug and the disc are heated. The punch is also heated separately. A melt of molten aluminum is prepared and poured into the die cavity, completely covering the alumina tile preform. The heated punch is immediately driven into the cavity to apply pressure to the molten aluminum. When the mold assembly cools, the punch is retracted, the base plate is removed, and the composite billet of pressure cast alumina tile reinforced aluminum alloy armor is removed from the mold.
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"Composite Castings" Metal Industry, Jul. 10, 1953, by Schwietzke.
Divecha Amarnath P.
Ferrando William A.
Hoover Scott M.
Karmarkar Subhash D.
Kerr James M.
Borda Gary G.
Herrick Randy
Miller Charles D.
Seidel Richard K.
The United States of America as represented by the Secretary of
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