Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1983-10-11
1986-03-04
Godici, Nicholas P.
Metal founding
Process
Shaping liquid metal against a forming surface
164 98, 164105, 164113, 164256, B22D 1700, B22D 1900
Patent
active
045735174
ABSTRACT:
A fiber reinforced metal is made by introducing an array of fibers into a die, charging the die with molten metal by vacuum infiltration and then applying pressure by means of an inert gas to improve the penetration of the molten metal into the fiber array. Apparatus for producing a reinforced metal cylinder comprises a cylindrical former (2) onto which a composite fiber (3) of boron, silicon and carbon is wound. The former (2) forms an inner closure member for the die defining a cylindrical die cavity (8) with an outer die body (4). A central cavity (15) within the former (2) is for insertion of a heating element to facilitate the flow of metal through the cavity (8). The die cavity is evacuated via conduit (16) and molten metal is then drawn into the cavity via the passage (7). After charging the die with molten metal the conduit (16) is connected to a source of high pressure nitrogen. The die is then cooled while maintaining the pressure in the die cavity making use of a cooling stalk which replaced the heating element inside the spool.
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Booth Stuart E.
Clifford Andrew W.
Parratt Noel J.
Godici Nicholas P.
Hinds William R.
Seidel R. K.
The Secretary of State for Defence in Her Britannic Majesty's Go
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