公开(公告)号：US20230323515A1

公开(公告)日：2023-10-12

申请号：US18025473

申请日：2021-09-22

Applicant: UACJ Corporation

Inventor： Dai YAMAMOTO ,  Phumprasop KANOKPLOY ,  Makoto ANDO

IPC: C22C21/02 ,  B23K1/00 ,  B23K35/28

CPC classification number: C22C21/02 ,  B23K1/00 ,  B23K35/286 ,  B23K2103/10

Abstract: A brazing, monolayer, aluminum-alloy material has a chemical composition composed of Si: 1.5 mass % or more and 3.5 mass % or less, Fe: 0.05 mass % or more and 2.00 mass % or less, Mn: 0.1 mass % or more and 2.0 mass % or less, Mg: 0.005 mass % or more and 0.500 mass % or less, and Bi: 0.010 mass % or more and 0.500 mass % or less, the remainder being Al and unavoidable impurities; and has a metallographic structure in which Mg—Bi-series compounds are dispersed in an Al matrix. The surface-area ratio of the above-mentioned Mg—Bi-series compounds in any arbitrary cross section is 0.05% or more.

公开(公告)号：US20210079502A1

公开(公告)日：2021-03-18

申请号：US17026178

申请日：2020-09-19

Applicant: UACJ CORPORATION

Inventor： Dai YAMAMOTO ,  Naoki YAMASHITA ,  Eiji ITAYA

IPC: C22C21/10 ,  C22F1/053 ,  F28F21/08

Abstract: An aluminum alloy fin material for heat exchangers, the aluminum alloy fin material being made of aluminum alloy comprising: 1.00 to 1.60 mass % of Mn; 0.70 to 1.20 mass % of Si; 0.05 to 0.50 mass % of Fe; 0.05 to 0.35 mass % of Cu; and 1.00 to 1.80 mass % of Zn, with the balance being Al and inevitable impurities, in which a matrix of the aluminum alloy has a fibrous structure, and tensile strength thereof is 170 to 230 MPa. According to the present invention, an aluminum alloy fin material for heat exchangers having excellent formability before brazing, excellent brazing properties, and excellent strength properties and corrosion resistance after brazing can be provided.