EP 1435269 A1 20040707 - Method of reducing cycle time for metal forming
Title (en)
Method of reducing cycle time for metal forming
Title (de)
Verfahren zum Verkürzen der Formgebungstaktzeit
Title (fr)
Procédé pour réduire le temps du cycle de formage
Publication
Application
Priority
US 33723903 A 20030106
Abstract (en)
A method for reducing the part-to-part cycle time of quick plastic forming and superplastic forming of a metallic sheet alloy into an automotive sheet metal component by locally modifying a die surface (18) to control friction which militates against undesirable necking and thinning.
IPC 1-7
IPC 8 full level
B21D 22/20 (2006.01); B21D 26/02 (2006.01); B21D 37/20 (2006.01)
CPC (source: EP US)
B21D 22/20 (2013.01 - EP US); B21D 26/055 (2013.01 - EP US); B21D 37/20 (2013.01 - EP US)
Citation (search report)
- [X] EP 0832702 A1 19980401 - ALUSUISSE LONZA SERVICES AG [CH]
- [X] US 4269053 A 19810526 - AGRAWAL SUPHAL P, et al
- [A] US 4250950 A 19810217 - BUXMANN KURT, et al
- [X] PATENT ABSTRACTS OF JAPAN vol. 016, no. 467 (M - 1317) 29 September 1992 (1992-09-29)
- [A] PATENT ABSTRACTS OF JAPAN vol. 004, no. 158 (M - 039) 5 November 1980 (1980-11-05)
- [A] PATENT ABSTRACTS OF JAPAN vol. 017, no. 126 (M - 1381) 17 March 1993 (1993-03-17)
- [A] PATENT ABSTRACTS OF JAPAN vol. 012, no. 347 (M - 743) 19 September 1988 (1988-09-19)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 04000131 A 20040107; US 33723903 A 20030106