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:
Dec. 27, 2022
Filed:
Jul. 12, 2017
Constellium Neuf-brisach, Biesheim, FR;
Uacj Corp., Tokyo, JP;
Gilles Guiglionda, Seyssinet-Pariset, FR;
Laurent Boissonnet, Voiron, FR;
Sylvain Carisey, Fortschwihr, FR;
Yusuke Yamamoto, Tokyo, JP;
Yoshifumi Shinzato, Tokyo, JP;
Mineo Asano, Tokyo, JP;
Yoichiro Betsuki, Tokyo, JP;
CONSTELLIUM NEUF-BRISACH, Biesheim, FR;
UACJ CORP., Tokyo, JP;
Abstract
The invention concerns a method for producing a 6xxx series aluminium sheet comprising the steps of homogenizing an ingot made from a 6XXX series aluminum alloy; cooling the homogenized ingot with a cooling rate in a range of from 150° C./h to 2000° C./h directly to the hot rolling starting temperature; hot rolling the ingot to a hot rolling final thickness and coiling at the hot rolling final thickness with such conditions that at least 50% recrystallization is obtained; cold rolling to obtain a cold rolled sheet. The method of the invention is particularly helpful to make sheets for the automotive industry which combine high tensile yield strength and good formability properties suitable for cold stamping operations, as well as high surface quality and high corrosion resistance with a high productivity.