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:
Nov. 25, 2003
Filed:
Oct. 31, 2001
Applicant:
Inventors:
Graeme John Marshall, Banbury, GB;
Karl Albert Herbst, Dusseldorf, DE;
Martin Heinze, Hofheim/Taunus, DE;
Richard Hamerton, Chipping Norton, GB;
Assignee:
Alcan International Limited, Montreal, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22F 1/05 ;
U.S. Cl.
CPC ...
C22F 1/05 ;
Abstract
A method of converting an ingot of a 6000 series aluminium alloy to self-annealing sheet, comprises subjecting the ingot to a two-stage homogenisation treatment, first at at least 560° C. and then at 450° C. to 480° C., then hot rolling the homogenised ingot at a starting hot roll temperature of 450° C. to 480° C. and a finishing hot roll temperature of 320° C. to 360° C. The resulting hot rolled sheet has an unusually low Cube recrystallisation component.