EP 1702995 A1 20060920 - METHOD FOR PRODUCING Al-Mg-Si ALLOY EXCELLENT IN BAKE-HARDENABILITY AND HEMMABILITY
Title (en)
METHOD FOR PRODUCING Al-Mg-Si ALLOY EXCELLENT IN BAKE-HARDENABILITY AND HEMMABILITY
Title (de)
VERFAHREN ZUR HERSTELLUNG VON AL-MG-SI-LEGIERUNG MIT HERVORRAGENDER BAKE-HARDENABILITY UND FALZBARKEIT
Title (fr)
PROCEDE DE PRODUCTION D'UN ALLIAGE AL-MG-SI EXCELLENT EN MATIERE DE TREMPABILITE ET D'APTITUDE A OURLER
Publication
Application
Priority
- JP 2004018581 W 20041213
- JP 2003413885 A 20031211
Abstract (en)
[PROBLEMS] To provide a method for producing an aluminum alloy sheet excellent in bake-hardenability and hemmability at a low cost by the employment of a very short production process. [MEANS FOR SOLVING PROBLEMS] A method for producing an aluminum alloy sheet, which comprises providing an aluminum alloy melt having a chemical composition, in wt%, that Mg: 0.30 to 1.00 %, Si: 0.30 to 1.20 %, Fe: 0.05 to 0.50 %, Mn: 0.05 to 0.50 %, Ti: 0.005 to 0.10 %, optionally further one or more of Cu: R0.05 to 0.70 % and Zr: 0.05 to 0.40 %, and the balance: Al and inevitable impurities, casting the alloy melt into a slab having a thickness of 5 to 15 mm by the twin belt casting method with a cooling speed at 1/4 of the thickness of the slab of 40 to 150 °C/s, winding up a coil, subjecting the coil to a homogenizing treatment, cooling the resultant coil to a temperature of 250 °C or lower with a cooling speed of 500 °C/hr or more, followed by cold rolling, and then subjecting the resulting product to a solution treatment.
IPC 8 full level
B22D 11/06 (2006.01); B22D 11/12 (2006.01); B22D 11/124 (2006.01); C22C 21/02 (2006.01); C22C 21/06 (2006.01); C22C 21/08 (2006.01); C22F 1/05 (2006.01)
CPC (source: EP KR US)
B22D 11/06 (2013.01 - KR); B22D 11/0605 (2013.01 - EP US); B22D 11/124 (2013.01 - EP US); C22C 21/02 (2013.01 - EP KR US); C22C 21/08 (2013.01 - EP US); C22F 1/05 (2013.01 - EP KR US)
Citation (search report)
See references of WO 2005056859A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1702995 A1 20060920; CA 2548788 A1 20050623; CN 1914348 A 20070214; JP 4577218 B2 20101110; JP WO2005056859 A1 20080417; KR 20060133996 A 20061227; TW 200536946 A 20051116; US 2007209739 A1 20070913; WO 2005056859 A1 20050623
DOCDB simple family (application)
EP 04806942 A 20041213; CA 2548788 A 20041213; CN 200480041574 A 20041213; JP 2004018581 W 20041213; JP 2005516219 A 20041213; KR 20067011617 A 20060613; TW 93138136 A 20041209; US 58227204 A 20041213