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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 10145630 B1

PDFFull Text
Date of Patent:
Dec. 04, 2018

Filed:

Jan. 04, 2016

Aluminum alloy fin material for heat exchangers, and method of producing the same

Applicant:

Uacj Corporation, Tokyo, JP;

Inventors:

Atsushi Fukumoto, Tokyo, JP;

Junichi Mochizuki, Tokyo, JP;

Akio Niikura, Tokyo, JP;

Assignee:

UACJ CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Veronica F Faison

Int. Cl.
CPC ...
C22C 21/00 (2006.01); F28F 21/08 (2006.01); B22D 11/06 (2006.01); C22F 1/04 (2006.01); C22C 21/02 (2006.01); C22C 21/10 (2006.01); F28F 1/12 (2006.01); C21D 1/26 (2006.01); C22F 1/043 (2006.01); C22F 1/053 (2006.01); C22F 1/00 (2006.01); F28F 1/02 (2006.01);
U.S. Cl.
CPC ...
F28F 21/084 (2013.01); B22D 11/0622 (2013.01); C21D 1/26 (2013.01); C22C 21/00 (2013.01); C22C 21/02 (2013.01); C22C 21/10 (2013.01); C22F 1/04 (2013.01); C22F 1/043 (2013.01); C22F 1/053 (2013.01); F28F 1/126 (2013.01); C22F 1/00 (2013.01); F28F 1/02 (2013.01); F28F 2275/04 (2013.01);
Abstract

An aluminum alloy fin material for heat exchangers, containing 0.5 to 1.5 mass % of Si; 0.1 to 1.0 mass % of Fe; 0.8 to 1.8 mass % of Mn; and 0.4 to 2.5 mass % of Zn, with the balance being Al and unavoidable impurities, wherein a metallographic microstructure before braze-heating is such that a density of second phase particles having a circle-equivalent diameter of less than 0.1 μm is less than 1×10particles/mm, and that a density of second phase particles having a circle-equivalent diameter of 0.1 μm or more is 5×10particles/mmor more, wherein a tensile strength before braze-heating, TS(N/mm), a tensile strength after braze-heating, TS(N/mm), and a sheet thickness of the fin material, t (μm), satisfy a relationship: 0.4≤(TS−TS)/t≤2.1, and wherein the sheet thickness is 150 μm or less; and a method of producing the same.

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