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:
Jul. 06, 2010
Filed:
Apr. 21, 2006
Fumihiro Koshigoe, Tochigi, JP;
Akihiro Tsuruno, Tochigi, JP;
Toshiki Ueda, Tochigi, JP;
Stephen F. Baumann, Lancaster, PA (US);
Fumihiro Koshigoe, Tochigi, JP;
Akihiro Tsuruno, Tochigi, JP;
Toshiki Ueda, Tochigi, JP;
Stephen F. Baumann, Lancaster, PA (US);
Alcoa Inc., Pittsburgh, PA (US);
Kobe Steel Ltd., Kobe, Hyogo, JP;
Abstract
A multi-layer aluminum brazing sheet including a core layer, interliner, braze clad layer and a sacrificial layer, in which the post-braze strength of the brazing sheet is optimized by controlling the manganese (Mn), silicon (Si), copper (Cu) and magnesium (Mg) contents of the core layer and the Mn, Si and Cu content of the interliner and the Mn, Si and Zn content of the sacrificial layer and the specifics of the braze thermal cycle. The brazing sheet maintains corrosion resistance, while optimizing post-braze strength, by utilizing 0.5 wt. % to 1.2 wt. % Cu in the interliner. Further, the interliner and sacrificial layer of the brazing sheet contain low or no magnesium to maintain the brazing sheet's braze-ability.