EP 1390553 A1 20040225 - PROCESS FOR PREPARING AN ALUMINUM ALLOY SHEET WITH IMPROVED BENDABILITY AND ALUMINUM ALLOY SHEET PRODUCED THEREFROM
Title (en)
PROCESS FOR PREPARING AN ALUMINUM ALLOY SHEET WITH IMPROVED BENDABILITY AND ALUMINUM ALLOY SHEET PRODUCED THEREFROM
Title (de)
VERFARHEN ZUR HERSTELLUNG EINES MIT VERBESSERTER BIEGBARKEIT BLECHES AUS ALUMINIUMLEGIERUNG UND DARAUS HERGESTELLTES BLECH AUS ALUMINIUMLEGIERUNG
Title (fr)
PROCEDE DE PREPARATION D'UNE FEUILLE EN ALLIAGE D'ALUMINIUM A APTITUDE AU PLIAGE AMELIOREE ET FEUILLE EN ALLIAGE D'ALUMINIUM AINSI PRODUITE
Publication
Application
Priority
- CA 0200653 W 20020502
- US 28838101 P 20010503
Abstract (en)
[origin: WO02090608A1] A process is described for producing an aluminum alloy sheet having excellent bendability for use in forming panels for automobiles. An aluminum alloy is used comprising 0.5 - 0.75% by weight Mg, 0.7 - 0.85% by weight Si, 0.15 -0.35% by weight Mn 0.1 - 0.3% by weight Fe, optionally 0.2 - 0.4% by weight Cu and the remainder Al and incidental impurities, and this alloy is cast into ingots by semi-continous casting. The ingot is subjecting to hot rolling and cold rolling, followed by solution heat treatment of the formed sheet. This sheet material is then pre-aged by rapidly cooling from an initial pre-aging temperature of at least 80 DEG C t room temperature at a cooling rate of more than 5 DEG C/hour.
IPC 1-7
IPC 8 full level
B22D 11/00 (2006.01); B22D 11/049 (2006.01); C22C 21/02 (2006.01); C22C 21/06 (2006.01); C22C 21/08 (2006.01); C22F 1/00 (2006.01); C22F 1/043 (2006.01); C22F 1/047 (2006.01); C22F 1/05 (2006.01)
CPC (source: EP US)
C22C 21/02 (2013.01 - EP US); C22C 21/08 (2013.01 - EP US); C22F 1/043 (2013.01 - EP US); C22F 1/047 (2013.01 - EP US); C22F 1/05 (2013.01 - EP US)
Citation (search report)
See references of WO 02090608A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02090608 A1 20021114; BR 0209385 A 20040706; CA 2445667 A1 20021114; EP 1390553 A1 20040225; IS 6998 A 20031022; JP 2004527658 A 20040909; NO 20034888 D0 20031103; NO 20034888 L 20040102; US 2003015261 A1 20030123
DOCDB simple family (application)
CA 0200653 W 20020502; BR 0209385 A 20020502; CA 2445667 A 20020502; EP 02727087 A 20020502; IS 6998 A 20031022; JP 2002587665 A 20020502; NO 20034888 A 20031103; US 13884602 A 20020502