Heating of metal alloy sheet by thermal conduction
US6890394B2 · kind B2 · utility
4Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2002 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Jul 30, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S72/709
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method is disclosed for heating a cold worked sheet of superplastically formable metal composition to recrystallize its microstructure to a formable condition and/or to heat the sheet to a temperature for an immediate forming operation. The sheet is placed between two electrical resistance heated platens maintained at a suitable temperature for recrystallizing and/or heating the metal sheet through its side surfaces. In a preferred embodiment a critical gap is maintained between the platens and the sheet to permit rapid conductive heating of the expanding sheet without marring its surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.