EP 0069421 B1 19860430 - PROCESS FOR MANUFACTURING SEMI-FINISHED OR FINISHED ARTICLES FROM A METALLIC MATERIAL BY HOT-SHAPING
Title (en)
PROCESS FOR MANUFACTURING SEMI-FINISHED OR FINISHED ARTICLES FROM A METALLIC MATERIAL BY HOT-SHAPING
Publication
Application
Priority
CH 422481 A 19810626
Abstract (en)
[origin: EP0069421A1] The semi-finished and finished products of an aluminum, copper, nickel and iron alloy with or without oxydic dispersoids are obtained by thermoforming, wherein the forming is carried out isothermally or quasi-isothermally in a single step, at a temperature which is just lower than the temperature of the solidus of the alloy of the work piece, at a relatively low deformation rate and under low specific deformation forces. The workpiece and the tool are maintained at least during the last, longer face of the forming at the maximum allowable temperature nearest to the solidus line. Preferably, a previous homogenisation of the material at said maximum allowable temperature followed by a cooling to the surrounding temperature before the forming. Very good filling power of the mold.
IPC 1-7
IPC 8 full level
B21C 23/00 (2006.01); B21J 1/06 (2006.01); B22F 3/02 (2006.01); B22F 3/17 (2006.01); C21D 7/13 (2006.01); C21D 8/00 (2006.01); C22C 21/12 (2006.01); C22F 1/00 (2006.01); C22F 1/04 (2006.01); C22F 1/10 (2006.01)
CPC (source: EP KR)
C22F 1/00 (2013.01 - EP KR)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0069421 A1 19830112; EP 0069421 B1 19860430; AT E19531 T1 19860515; BR 8207730 A 19830531; DE 3270846 D1 19860605; JP S58501041 A 19830630; JP S6360819 B2 19881125; KR 840000655 A 19840225; KR 890003976 B1 19891014; PL 237150 A1 19830214; WO 8300168 A1 19830120
DOCDB simple family (application)
EP 82200780 A 19820623; AT 82200780 T 19820623; BR 8207730 A 19820622; CH 8200082 W 19820622; DE 3270846 T 19820623; JP 50188782 A 19820622; KR 820002862 A 19820626; PL 23715082 A 19820625