Centrifugal casting of reinforced articles
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsAmarnath P. Diyecha, Subhash D. Karmarkar, William A. Ferrando, Scott M. Hoover
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Abstract
A reinforcement made of a composite material is positioned inside of a ceifugal casting mold. Molten matrix metal is then introduced into the mold while being rotated about its longitudinal axis until the molten metal completely encapsulates the reinforcement.
Claims22
A process of forming a hollow composite metallic article having a nonwoven reinforcement comprising a composite rod or tube having a metal component therein by a centrifugal casting operation in a rotating mold, including the steps of:
- positioning the reinforcement inside the mold;
- introducing molten matrix metal into the rotating mold to encapsulate the reinforcement therein;
- and cooling the matrix metal with the reinforcement therein to complete the casting operation.
A process of forming a hollow composite article having a nonwoven reinforcement comprising a composite rod or tube having a metal component therein by a centrifugal casting operation in a rotating mold, including the steps of:
- (a) positioning the reinforcement inside the mold in preselected locations internally of the article to be cast;
- (b) introducing molten matrix metal in a molten condition into the rotating mold until the metal completely encapsulates the reinforcement;
- and
- (c) cooling the matrix metal to solidification forming the article with the composite reinforcement incorporated therein.
In a process of forming a hollow composite article made of metal having a nonwoven reinforcement comprising a composite rod or tube having a metal component therein, including the steps of:
- coating the reinforcement with a bond enhancing compound;
- positioning the coated reinforcement within a mold of a centrifugal casting device;
- introducing the metal in a molten state into the mold to encapsulate the reinforcement;
- and maintaining the mold during said introduction of the metal under an internal temperature causing decomposition of the bond enhancing compound into an interfacing material which diffuses into the reinforcement and the metal in the molten state.
Dependencies are inferred from the claim text.