Hot isostatic pressing method and apparatus
US6837086B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2003 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Jul 25, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2241/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
While a workpiece is heated and pressed by one of a pair of high-pressure vessels, a workpiece being pressed by the other high-pressure vessel is placed in a heated state. In the reducing process after termination of heating and pressing treatment of the workpiece by one high-pressure vessel, both the high-pressure vessels are placed in communication, and the pressure medium gas released from one high-pressure vessel is poured into the other high-pressure vessel. After pressures of both the high-pressure vessels have assumed a nearly balanced state, the pressure medium gas is sucked out of one high-pressure vessel by a compressor and pressed, and is poured into the other high-pressure vessel, and the workpiece is heated and pressed by the other high-pressure vessel. By the method as described, considerable shortening of cycle time of HIP treatment is achieved, and the HIP treatment can be carried out with high efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.