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:
Jan. 01, 2013
Filed:
Feb. 05, 2009
Katsushi Matsumoto, Kobe, JP;
Eiichi Tamura, Kobe, JP;
Masao Kinefuchi, Kobe, JP;
Toshiki Ueda, Moka, JP;
Fumihiro Koshigoe, Moka, JP;
Shimpei Kimura, Moka, JP;
Katsushi Matsumoto, Kobe, JP;
Eiichi Tamura, Kobe, JP;
Masao Kinefuchi, Kobe, JP;
Toshiki Ueda, Moka, JP;
Fumihiro Koshigoe, Moka, JP;
Shimpei Kimura, Moka, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
Provided is a multi-layered sheet which has undergone heating corresponding to brazing, such as an aluminum-alloy radiator tube, or a multi-layered sheet such as an aluminum-alloy brazing sheet. The multi-layered sheet can have a reduced thickness and has excellent fatigue properties. The multi-layered sheet of aluminum alloys comprises a core layer () which has been clad at least with a sacrificial layer (). This multi-layered sheet is a multi-layered sheet to be subjected to brazing or welding to produce a heat exchanger or is a multi-layered sheet which has undergone heating corresponding to brazing. The core layer () comprises a specific 3000-series composition. In this core layer (), the average density in number of dispersed particles having a specific size has been regulated. As a result, fatigue properties, which govern cracking, can be highly improved.