Method of manufacturing a hollow metal body
US6862910B2 · kind B2 · utility
3Cited by
4References
12Claims
0Family size
Inventor
Key dates
| Filing date | Apr 9, 2003 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Apr 9, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49805
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The subject matter of the present invention is a method of manufacturing, in a tool mold provided with a final contour as desired, a hollow metal body the cross-sectional shape of which varies in the longitudinal direction, an internal pressure being applied to a tubular hollow body with approximately uniform initial wall thickness, the tubular hollow body having the highest temperature in the zones of greatest deformation, the temperature in these zones being reduced once the hollow body fits against the wall of the tool mold, the temperature being subsequently increased in zones with lower degrees of deformation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.