EP 1566462 A1 20050824 - Heating of metal alloy sheet by thermal conduction
Title (en)
Heating of metal alloy sheet by thermal conduction
Title (de)
Heizung des Metalllegierung Blattes durch thermische Übertragung
Title (fr)
Chauffage de feuille d'alliage en métal par la conduction thermique
Publication
Application
Priority
EP 04003803 A 20040219
Abstract (en)
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.
IPC 1-7
IPC 8 full level
C22F 1/04 (2006.01); C22F 1/047 (2006.01)
CPC (source: EP)
C22F 1/04 (2013.01); C22F 1/047 (2013.01)
Citation (search report)
- [Y] US 6547895 B2 20030415 - BRADLEY JOHN ROBERT [US], et al
- [Y] US 6211497 B1 20010403 - MATSEN MARC R [US], et al
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 04003803 A 20040219