Method and apparatus for forming a thixoforged copper base alloy cartridge casing
AssigneeOlin Corporation
InventorsMichael J. Pryor, Joseph Winter, Jonathan A. Dantzig
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Abstract
A process and apparatus for forming a thin-walled, elongated member having superior strength properties from an age hardenable copper base alloy is described herein. A slug or billet of a slurry cast, age hardenable copper base alloy is formed into a semi-solid slurry having about 10% to about 30% of the alloy in a liquid phase. The semi-solid slurry is then thixoforged to form the thin-walled, elongated member. Thereafter, the member is age hardened to provide a product having desired strength properties. The process and apparatus of the instant invention may be utilized to form cartridge casings.
Claims19
A process for forming a cartridge casing having a thin-walled, high strength, elongated member, said process comprising:
- forming a semi-solid slurry from an age hardenable copper base alloy;
- forging said semi-solid slurry to form said member;
- and age hardening said forged member.
Dependencies are inferred from the claim text.