Forming superconducting radio frequency cavities using hydrostatically controlled bulging
US12157159B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 2024 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Jan 24, 2044 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D39/206
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Forming superconducting radio frequency (SRF) cavities with hydrostatically controlled bulging, using a pressurizing incompressible medium, such as urethane elastomer, for hydroforming a metal tube in a mold. The urethane elastomer functions as the pressurizing incompressible medium in the hydroforming process. Stretch-thinning of the metal tube wall is reduced by a decrease in concentrated bending deformation thereof. Friction between the inner wall of the metal tube and the incompressible medium constrains the plastic flow of the tube wall material, thus reducing the stretch deformation and thickness reduction thereof. A stepped press ram may be used to pressurize the incompressible medium material and then pushes on an end of the tube to feed extra tube length into the expanding tube wall for reducing thinning thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.