EP 1056560 A1 20001206 - METHOD FOR MAKING ALUMINIUM ALLOY STRIPS WITH HIGH SURFACE HOMOGENEITY
Title (en)
METHOD FOR MAKING ALUMINIUM ALLOY STRIPS WITH HIGH SURFACE HOMOGENEITY
Title (de)
HERSTELLUNGSVERFAHREN VON ALUMINIUMBAND HOHER OBERFLÄSCHENHOMOGENITÄT
Title (fr)
PROCEDE DE FABRICATION DE BANDES EN ALLIAGE D'ALUMINIUM A GRANDE HOMOGENEITE DE SURFACE
Publication
Application
Priority
- FR 9900319 W 19990212
- FR 9801987 A 19980213
Abstract (en)
[origin: US6948550B2] A process for manufacturing a strip of aluminum alloy having high surface homogeneity with an upper side showing after a 1 mum thick sulphur anodic treatment, an optical roughness value S<SUB>N </SUB>measured on three 5 cm longitudinal sections and three 5 cm transverse sections, such that its mean variation on each section, defined by the ratio: (Maximum S<SUB>N</SUB>-minimum S<SUB>N</SUB>)/Mean S<SUB>N </SUB>is less than 20%, and the difference DeltaS<SUB>N</SUB>=S<SUB>N </SUB>max -S<SUB>N </SUB>min is less than 20. The strip is manufactured by continuous casting between two cooled rolls from a casting tank containing the liquid metal connected to an injector, and feeding the liquid metal into the gap between the two rolls. The injector has an upper lip recessed by at least 2 mm with reference to a lower lip of the injector.
IPC 1-7
IPC 8 full level
B22D 11/00 (2006.01); B22D 11/06 (2006.01); C22C 21/00 (2006.01); C25D 11/04 (2006.01)
CPC (source: EP US)
B22D 11/0622 (2013.01 - EP US); B22D 11/0642 (2013.01 - EP US); C25D 11/04 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FR GB IT
DOCDB simple family (publication)
US 2002084056 A1 20020704; US 6948550 B2 20050927; AT E294038 T1 20050515; AU 2429499 A 19990830; BR 9907880 A 20001017; CN 1222381 C 20051012; CN 1289275 A 20010328; DE 69924981 D1 20050602; EP 1056560 A1 20001206; EP 1056560 B1 20050427; FR 2774930 A1 19990820; FR 2774930 B1 20000519; JP 2002502708 A 20020129; NO 20004061 D0 20000811; NO 20004061 L 20001013; US 6834708 B1 20041228; WO 9941031 A1 19990819
DOCDB simple family (application)
US 1368101 A 20011213; AT 99903745 T 19990212; AU 2429499 A 19990212; BR 9907880 A 19990212; CN 99802672 A 19990212; DE 69924981 T 19990212; EP 99903745 A 19990212; FR 9801987 A 19980213; FR 9900319 W 19990212; JP 2000531266 A 19990212; NO 20004061 A 20000811; US 58262500 A 20000808