EP 2479305 A1 20120725 - Method of manufacturing a structural automotive part made from a rolled Al-Zn alloy
Title (en)
Method of manufacturing a structural automotive part made from a rolled Al-Zn alloy
Title (de)
Verfahren zur Herstellung eines Automobilstrukturteils aus einer gewalzten Al-Zn-Legierung
Title (fr)
Procédé de fabrication d'une pièce automobile de structure à partir d'un alliage Al-Zn laminé
Publication
Application
Priority
EP 11151732 A 20110121
Abstract (en)
The invention relates to method of manufacturing a formed aluminium alloy structural part or a body-in-white (BIW) part of a motor vehicle, the method comprising: (a) providing a rolled aluminium sheet product wherein the aluminium alloy is an AA7000 series aluminium alloy and having a gauge in a range of 0.5 to 4 mm and being subjected to a solution heat treatment and having been cooled, (b) forming the aluminium alloy sheet to obtain a three-dimensional formed part, (c) cooling of the formed part to a sub-zero temperature (T1) by immersing in a coolant, and allowing the formed part to reach equilibrium at said sub-zero temperature (T1), (d) heating of the formed part from the sub-zero temperature (T1) to a temperature T2 above 40°C, followed by cooling to ambient temperature, and (e) subjecting said motor vehicle component to a paint bake cycle.
IPC 8 full level
C22C 21/10 (2006.01); C22F 1/053 (2006.01)
CPC (source: EP)
C22C 21/10 (2013.01); C22F 1/053 (2013.01)
Citation (search report)
- [XA] FR 2846669 A1 20040507 - PECHINEY RHENALU [FR]
- [A] WO 2009156283 A1 20091230 - ALERIS ALUMINUM KOBLENZ GMBH [DE], et al
- [A] US 4159217 A 19790626 - SELINES RONALD J [US], et al
- [A] US 6258463 B1 20010710 - CORRIDAN MICHAEL KEVIN [US]
- [A] JP 2010083381 A 20100415 - KOBE STEEL LTD
- [A] GB 1392722 A 19750430 - ALCAN RES & DEV
- [A] DATABASE CAPLUS [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; 8 September 2008 (2008-09-08), XP002658880, Database accession no. 2008:1080285 & JAYAGANTHAN, R. ET AL: "Effect of cryorolling strain on precipitation kinetics of Al 7075 alloy", vol. 584-586, 2008, MATERIALS SCIENCE FORUM, ISBN: 978-0-87849-375-3, pages: 911 - 916
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 11151732 A 20110121