公开(公告)号：US11806816B2

公开(公告)日：2023-11-07

申请号：US17907731

申请日：2021-02-15

Applicant: MA Aluminum Corporation

Inventor： Michihide Yoshino ,  Hideyuki Miyake ,  Hajime Chiba

IPC: B23K35/02 ,  B23K1/00 ,  B23K35/28 ,  C22C21/10 ,  B23K103/10 ,  B23K103/16 ,  B23K101/14

CPC classification number: B23K35/0238 ,  B23K1/0012 ,  B23K35/288 ,  C22C21/10 ,  B23K2101/14 ,  B23K2103/10 ,  B23K2103/166

Abstract: An aluminum brazing sheet for flux-free brazing having a multilayer structure of two or more layers including at least one core material layer and one brazing material layer, wherein the brazing material layer is positioned on one or both sides of the core material layer and on an outermost surface of the brazing sheet. The brazing material layer is made of an Al—Si—Mg—X brazing material containing: in mass%, 0.05 to 2.0% of Mg, and 2.0 to 14.0% of Si, and further containing one or more of 0.01 to 0.3% of Bi, Ga, Sn, In and Pb, a total amount of Bi, Ga, Sn, In and Pb being 0.5% or less. X indicates one or more of Bi, Ga, Sn, In and Pb.

公开(公告)号：US12103116B2

公开(公告)日：2024-10-01

申请号：US17424384

申请日：2019-09-25

Applicant: MA Aluminum Corporation

Inventor： Yoshiki Mori ,  Hideyuki Miyake ,  Michihide Yoshino ,  Shohei Iwao ,  Masakazu Edo

IPC: B23K35/28 ,  B23K35/02 ,  B32B15/00 ,  B32B15/01 ,  C22C21/02 ,  C22C21/10

CPC classification number: B23K35/288 ,  B23K35/0238 ,  B32B15/00 ,  B32B15/01 ,  B32B15/016 ,  C22C21/02 ,  C22C21/10

Abstract: An aluminum brazing sheet has a multilayer structure of two or more layers of at least a core material and a brazing material, wherein an Al—Si—Mg—Bi-based brazing material containing, by mass %, 0.01% to 2.0% of Mg, 1.5% to 14.0% of Si, and 0.005% to 1.5% of Bi is clad on one surface or both surfaces of the core material to be located at an outermost surface of the aluminum brazing sheet, in the Al—Si—Mg—Bi based brazing material, there are more than 10 Mg—Bi-based compounds having a diameter of 0.01 μm or more and less than 5.0 μm when observed in a surface layer plane direction and there are less than 2 Mg—Bi-based compounds having a diameter of 5.0 μm or more, and in the brazing material, there are less than 5 Bi particles having a diameter of 5.0 μm or more when observed in the surface layer plane direction.