EP 3887073 A1 20211006 - METHOD OF PRODUCING A HIGH-ENERGY HYDROFORMED STRUCTURE FROM AN AL-MG-SC ALLOY
Title (en)
METHOD OF PRODUCING A HIGH-ENERGY HYDROFORMED STRUCTURE FROM AN AL-MG-SC ALLOY
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER HOCHENERGETISCHEN HYDROGEFORMTEN STRUKTUR AUS EINER AL-MG-SC-LEGIERUNG
Title (fr)
PROCÉDÉ DE PRODUCTION D'UNE STRUCTURE HYDROFORMÉE À HAUTE ÉNERGIE À PARTIR D'UN ALLIAGE D'AL-MG-SC
Publication
Application
Priority
- EP 18208368 A 20181126
- EP 2019080345 W 20191106
Abstract (en)
[origin: WO2020108932A1] The invention relates to a method of producing an integrated monolithic aluminium structure, the method comprising the steps of: (a) providing an AlMgSc-series aluminium alloy rolled productwith a predetermined thickness of at least 2mm; (b) optionally pre-machining of the aluminium alloy rolled productto an intermediate machined structure; (c) high-energy hydroforming of the plate or optional intermediate machined structure against a forming surface of a rigid die having a contour in accordance with a desired curvature of the integrated monolithic aluminium structure, the high energy forming causing the plate or the intermediate machined structure to conform to the contour of the forming surface to at least one of a uniaxial curvature and a biaxial curvature; (d) annealing and cooling of the high-energy hydroformedstructure; (e) machining into a near-final or final integrated monolithic aluminium structure.
IPC 8 full level
B21D 26/08 (2006.01); B21D 26/053 (2011.01); B21D 26/06 (2006.01); B21D 26/10 (2006.01); B21D 26/12 (2006.01); B21D 53/92 (2006.01); C22C 21/06 (2006.01)
CPC (source: EP)
B21D 26/053 (2013.01); B21D 26/06 (2013.01); C22C 21/06 (2013.01); C22F 1/047 (2013.01); B21D 53/92 (2013.01)
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)
WO 2020108932 A1 20200604; EP 3887073 A1 20211006; EP 3887073 B1 20240828; NL 2024300 B1 20200609
DOCDB simple family (application)
EP 2019080345 W 20191106; EP 19797293 A 20191106; NL 2024300 A 20191125