Method and apparatus for forming a thixoforged copper base alloy cartridge casing
US4494461A · kind A · utility
34Cited by
23References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1982 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | Jan 6, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S164/90
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.