EP 1306461 A2 20030502 - METHOD FOR PRODUCING HALF-FINISHED PRODUCTS MADE OF ALUMINIUM ALLOYS
Title (en)
METHOD FOR PRODUCING HALF-FINISHED PRODUCTS MADE OF ALUMINIUM ALLOYS
Title (de)
HERSTELLUNGSVERFAHREN FÜR HALBFERTIGE PRODUKTE AUS ALUMINIUMLEGIERUNGEN
Title (fr)
PROCEDE DE FABRICATION D'UN DEMI-PRODUIT A PARTIR D'UN ALLIAGE D'ALUMINIUM
Publication
Application
Priority
- RU 0100319 W 20010730
- RU 2000120275 A 20000801
Abstract (en)
The present invention relates to the method of fabrication of wrought semiproducts from high strength aluminium-based alloys, and fabrication of articles from such semiproducts e.g frames, fittings, beams, etc. used in aerospace engineering and transportation facilities. The suggested method comprises: casting an ingot, homogenization, forging the ingot, extrusion of the wrought billet, solution heat treatment, cold working in two steps: 1. stretching with 1-5% permanent set, 2. multi-axial shaping of the billet by bending while simultaneously performing the local plastic deformation of the billet by compressing ( 1-20 %) the joint places of the blank parts being disposed at an angle of 45-135 DEG to each other; two stage ageing: 1<st> stage = heating to 90-120 DEG C for 5-24 hours; 2<nd> stage = heating to 160-190 DEG C for 5-20 hours. The suggested method allows to fabricate long, irregular-shaped semiproducts from wrought aluminium-based alloys having high strength and fracture toughness and low level of residual stresses, thereby providing the fabrication of products without any distortion or buckling upon machining.
IPC 1-7
IPC 8 full level
C22F 1/04 (2006.01); C22F 1/053 (2006.01)
IPC 8 main group level
C25D (2006.01)
CPC (source: EP US)
C22F 1/04 (2013.01 - EP US); C22F 1/053 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
WO 0210482 A2 20020207; WO 0210482 A3 20020926; CA 2417998 A1 20030203; CA 2417998 C 20090421; DE 60135853 D1 20081030; EP 1306461 A2 20030502; EP 1306461 A4 20071010; EP 1306461 B1 20080917; RU 2184174 C2 20020627; US 2005028899 A1 20050210
DOCDB simple family (application)
RU 0100319 W 20010730; CA 2417998 A 20010730; DE 60135853 T 20010730; EP 01957048 A 20010730; RU 2000120275 A 20000801; US 33355503 A 20030620