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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.:

US 11813687 B1

PDFFull Text
Date of Patent:
Nov. 14, 2023

Filed:

Jul. 06, 2021

Aluminum alloy brazing sheet, method for manufacturing the same, aluminum alloy sheet, and heat exchanger

Applicant:

Uacj Corporation, Tokyo, JP;

Inventors:

Tomoki Yamayoshi, Tokyo, JP;

Atsushi Fukumoto, Tokyo, JP;

Assignee:

UACJ CORPORATION, Tokyo, JP;

Attorney:

WHDA, LLP

Primary Examiner:

Devang R Patel

Int. Cl.
CPC ...
B23K 35/02 (2006.01); C22C 21/00 (2006.01); B23K 1/00 (2006.01); B23K 1/19 (2006.01); B23K 20/04 (2006.01); B32B 15/01 (2006.01); B23K 35/28 (2006.01); C22C 21/04 (2006.01); C22F 1/047 (2006.01); C22F 1/04 (2006.01); C22F 1/053 (2006.01); B23K 20/233 (2006.01); B23K 1/008 (2006.01); C22F 1/043 (2006.01); B23K 20/24 (2006.01); C22C 21/02 (2006.01); F28F 21/08 (2006.01); B23K 103/10 (2006.01); B23K 101/14 (2006.01);
U.S. Cl.
CPC ...
B23K 1/0012 (2013.01); B23K 1/008 (2013.01); B23K 1/19 (2013.01); B23K 20/04 (2013.01); B23K 20/2336 (2013.01); B23K 20/24 (2013.01); B23K 35/0233 (2013.01); B23K 35/0238 (2013.01); B23K 35/286 (2013.01); B23K 35/288 (2013.01); B32B 15/016 (2013.01); C22C 21/00 (2013.01); C22C 21/02 (2013.01); C22C 21/04 (2013.01); C22F 1/04 (2013.01); C22F 1/043 (2013.01); C22F 1/047 (2013.01); C22F 1/053 (2013.01); F28F 21/084 (2013.01); B23K 2101/14 (2018.08); B23K 2103/10 (2018.08); F28F 2245/00 (2013.01); F28F 2275/04 (2013.01);
Abstract

An aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using flux includes a core material of aluminum or aluminum alloy, and a brazing material of aluminum alloy including Si of 4.0 mass % to 13.0 mass % and cladding one side surface or both side surfaces of the core material. One or both of the core material and the brazing material includes any one or two or more types of X atoms (X is Mg, Li, Be, Ca, Ce, La, Y, and Zr). The aluminum alloy brazing sheet is a brazing sheet in which oxide particles including the X atoms and having a volume change ratio of 0.99 or lower with respect to an oxide film before brazing heating are formed on a surface thereof, by brazing heating.

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