Process for hot isostatic pressing of a metal workpiece
US4379725A · kind A · utility
12Cited by
6References
13Claims
0Family size
Inventor
Key dates
| Filing date | Feb 8, 1982 |
| Grant date | Apr 12, 1983 |
| Priority date | — |
| Expiry date | Feb 8, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for hot isostatic pressing of a metal workpiece, such as a ferrous casting. The workpiece is heated in a fluidized particulate bed (sand) to a temperature above the plastic range of the metal (e.g. 2000.degree. F.). Then, the workpiece in the unfluidized bed at this temperature is subjected to a superatmospheric gas pressure above 20,000 psi until internal mechanical property changes have occurred. Lastly, the workpiece is removed from the bed and superatmospheric pressure environment for subsequent utilization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.