Global Patent Index - EP 1320430 A1

EP 1320430 A1 2003-06-25 - 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

EP 1320430 A1 (DE)

Application

EP 01965216 A

Priority

  • DE 10047491 A
  • EP 0109821 W

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 (main, further and additional classification)

B21D 22/02; B21D 26/02; C22F 1/04

IPC 8 full level (invention and additional information)

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 (invention and additional information)

B21D 26/021 (2013.01); B21D 22/02 (2013.01); B21D 26/053 (2013.01); C22F 1/04 (2013.01); C22F 1/047 (2013.01)

Citation (search report)

See references of WO 0226414A1

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

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; 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

INPADOC legal status


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2013-05-17 [REG FR TP] TRANSMISSION OF PROPERTY

- Owner name: AIRBUS OPERATIONS GMBH, DE

- Effective date: 20130417

2009-06-10 [REG GB 732E] AMENDMENTS TO THE REGISTER IN RESPECT OF CHANGES OF NAME OR CHANGES AFFECTING RIGHTS (SECT. 32/1977)

- Free text: REGISTERED BETWEEN 20090514 AND 20090520

2005-10-05 [26N] NO OPPOSITION FILED

- Effective date: 20050714

2005-08-12 [ET] FR: TRANSLATION FILED

2005-04-16 [REG ES FG2A] DEFINITIVE PROTECTION

- Document: ES 2228944 T3

2005-02-02 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20050111

2004-11-18 [REF] CORRESPONDS TO:

- Document: DE 50104142 P 20041118

2004-10-13 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE ES FR GB IT

2004-10-13 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Free text: NOT ENGLISH

2004-10-06 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: JAMBU, STEPHANE

2004-10-06 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: JUHL, KNUT

2004-10-06 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: LENCZOWSKI, BLANKA

2004-06-16 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: JAMBU, STEPHANE

2004-06-16 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: JUHL, KNUT

2004-06-16 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: LENCZOWSKI, BLANKA

2003-08-06 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: JAMBU, STEPHANE

2003-08-06 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: JUHL, KNUT

2003-08-06 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: LENCZOWSKI, BLANKA

2003-06-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20030308

2003-06-25 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR