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US 4,932,099 AGranted
Method of producing reinforced composite materials
AssigneeChrysler Corporation
InventorJohn M. Corwin
Life of this patent
Estimating the term…
Abstract
A method is disclosed for producing a reinforced composite material. A molten matrix metal is heated to a temperature substantially greater than the melting point of the matrix metal. The matrix metal is poured into a mold containing a mass of reinforcing material. The matrix metal is solidified.
Claims6
A method of producing an alumina-reinforced composite material, said method comprising the steps of:
- (a) using a preformed body containing alumina to form an investment casting mold;
- (b) evacuating a chamber for melting to a chamber pressure of about 0.10 to about 0.25 mm Hg;
- (c) heating said mold to a temperature of about 1,800.degree. F. to about 2,200.degree. F.;
- (d) melting an aluminum alloy containing about 3.5% Mg;
- (e) heating said alloy to a temperature of about 1,800.degree. F. to about 2,200.degree. F. while maintaining the alloy at a pressure of about 0.76 mm Hg;
- (f) pouring said molten aluminum alloy into said casting mold which contains alumina from said preformed body;
- (g) increasing said chamber pressure to a pressure in the range of 760 to 1500 mm Hg;
- and
- (h) solidifying said molten aluminum alloy.
6 more elements
Dependencies are inferred from the claim text.