EP 1320430 A1 20030625 - METHOD FOR SHAPING STRUCTURES COMPRISED OF ALUMINUM ALLOYS
Title (en)
METHOD FOR SHAPING STRUCTURES COMPRISED OF ALUMINUM ALLOYS
Title (de)
VERFAHREN ZUM UMFORMEN VON STRUKTUREN AUS ALUMINIUM-LEGIERUNGEN
Title (fr)
PROCEDE DE FORMAGE DE STRUCTURES EN ALLIAGES D'ALUMINIUM
Publication
Application
Priority
- DE 10047491 A 20000926
- EP 0109821 W 20010825
Abstract (en)
[origin: WO0226414A1] The invention relates to a method for shaping complex structures comprised of aluminum alloys, especially comprised of naturally hard AlMg alloys, naturally hard AlMgSc alloys, and/or of hardenable AlMgLi alloys. The aim of the invention is to provide a method of the aforementioned type with which complex structures comprised of the inventive alloys can be shaped in a simple manner, that is to say, while using the smallest number of process steps. Said structures are shaped in such a manner that they nearly assume their final shape without significant spring-back. At the same time, the loss of material should be held to a minimum. To this end, the inventive method involves the following steps: elastically shaping a part (1), which is to be reshaped, into a predetermined contour (2a) while subjecting the part to the action of an external force (F, P, p), and; heating the elastically shaped part (1) to a temperature (T1) that is greater than that required for effecting a creep shaping and stress relaxation of the alloy so that the part (1) is shaped while maintaining the contour (2a).
IPC 1-7
IPC 8 full level
B21D 22/20 (2006.01); B21D 22/02 (2006.01); B21D 26/02 (2011.01); C22F 1/04 (2006.01); C22F 1/047 (2006.01)
CPC (source: EP US)
B21D 22/02 (2013.01 - EP US); B21D 26/021 (2013.01 - EP US); B21D 26/053 (2013.01 - EP US); C22F 1/04 (2013.01 - EP US); C22F 1/047 (2013.01 - EP US)
Citation (search report)
See references of WO 0226414A1
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 0226414 A1 20020404; CA 2423566 A1 20030325; CA 2423566 C 20100105; CN 1230265 C 20051207; CN 1455711 A 20031112; DE 10047491 A1 20020418; DE 10047491 B4 20070412; DE 50104142 D1 20041118; EP 1320430 A1 20030625; EP 1320430 B1 20041013; ES 2228944 T3 20050416; JP 2004509765 A 20040402; JP 4776866 B2 20110921; RU 2271891 C2 20060320; US 2004050134 A1 20040318; US 7217331 B2 20070515
DOCDB simple family (application)
EP 0109821 W 20010825; CA 2423566 A 20010825; CN 01815534 A 20010825; DE 10047491 A 20000926; DE 50104142 T 20010825; EP 01965216 A 20010825; ES 01965216 T 20010825; JP 2002530234 A 20010825; RU 2003112217 A 20010825; US 38147603 A 20031014