EP 1727921 B1 20080514 - STRUCTURAL ELEMENT FOR AIRCRAFT ENGINEERING EXHIBITING A VARIATION OF PERFORMANCE CHARACTERISTICS
Title (en)
STRUCTURAL ELEMENT FOR AIRCRAFT ENGINEERING EXHIBITING A VARIATION OF PERFORMANCE CHARACTERISTICS
Title (de)
KONSTRUKTIONSELEMENT FÜR DIE LUFTFAHRT MIT VARIATION DER ANWENDUNGSTECHNISCHEN EIGENSCHAFTEN
Title (fr)
ELEMENT DE STRUCTURE POUR CONSTRUCTION AERONAUTIQUE PRESENTANT UNE VARIATION DES PROPRIETES D"EMPLOI
Publication
Application
Priority
- FR 2005000681 W 20050321
- FR 0402971 A 20040323
Abstract (en)
[origin: WO2005098072A2] The invention relates to a method for producing a part made of aluminium alloy with structural hardening consisting a) in melting a semifinished extruded or forged rolled stock followed by water quenching, b) in optionally carrying out a controlled drawing with a permanent stretching which is equal to or greater than 5 % and c) in tempering. Said invention is characterised in that at least one tempering operation is carried out in a controlled thermal gradient linear furnace comprising at least two areas or groups of areas (Z1, Z2) at initial temperatures (T1, T2) in which the variation of each temperature (T1, T2) around a specified temperature is equal or less than <5 DEG C through the length of said areas of the groups of areas, the difference between the specified temperatures of the initial temperatures (T1, T2) is equal or greater than 5 DEG C and said areas or the groups of areas are separable by a transition area or group of areas (Z1,2) inside of which the initial temperature varies from T1 to T2 and a length which is parallel to the axis of the linear furnace of each at least two areas or the groups of areas is equal to or greater than 1 meter.
IPC 8 full level
C22F 1/053 (2006.01); C22F 1/04 (2006.01); F27B 9/40 (2006.01); F27B 17/00 (2006.01); F27D 19/00 (2006.01)
CPC (source: EP)
C22F 1/04 (2013.01); C22F 1/053 (2013.01); F27B 9/40 (2013.01); F27D 19/00 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005098072 A2 20051020; WO 2005098072 A3 20060504; AT E395444 T1 20080515; BR PI0507940 A 20070717; BR PI0507940 B1 20180417; CA 2560672 A1 20051020; CA 2560672 C 20120717; CN 100507066 C 20090701; CN 1930317 A 20070314; DE 602005006764 D1 20080626; EP 1727921 A2 20061206; EP 1727921 B1 20080514; ES 2307180 T3 20081116; FR 2868084 A1 20050930; FR 2868084 B1 20060526
DOCDB simple family (application)
FR 2005000681 W 20050321; AT 05743083 T 20050321; BR PI0507940 A 20050321; CA 2560672 A 20050321; CN 200580007945 A 20050321; DE 602005006764 T 20050321; EP 05743083 A 20050321; ES 05743083 T 20050321; FR 0402971 A 20040323