The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 2005
Filed:
Dec. 13, 2001
Jean-luc Hoffmann, Matzenheim, FR;
Pierre-yves Menet, Colmar, FR;
Klaus Maiwald, Morians, FR;
Regine Debreux, Le Touvet, FR;
Martin-peter Schmidt, La Murette, FR;
Yves Scelles, Vodable, FR;
Jean-Luc Hoffmann, Matzenheim, FR;
Pierre-Yves Menet, Colmar, FR;
Klaus Maiwald, Morians, FR;
Regine Debreux, Le Touvet, FR;
Martin-Peter Schmidt, La Murette, FR;
Yves Scelles, Vodable, FR;
Pechiney Rhenalu, Paris, FR;
Abstract
A process for manufacturing a strip of aluminum alloy having high surface homogeneity with an upper side showing after a 1 μm thick sulphur anodic treatment, an optical roughness value Smeasured 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−minimum S)/Mean Sis less than 20%, and the difference ΔS=Smax −Smin 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.