Near net shape processing of zirconium or hafnium metals and alloys
US5156689A · kind A · utility
0Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 20, 1991 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | May 20, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/18
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Zirconium or hafnium tubeshells, billets and channel sheets are produced by plasma arc melting the metal to form a liquid metal pool. The pool is poured into a mold to form a near net shape. The near net shape is reduced to final size while maintaining the metal temperature below the alpha-beta transition temperature throughout the size reducing step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.