公开(公告)号：US11819956B2

公开(公告)日：2023-11-21

申请号：US17600705

申请日：2020-04-03

Applicant: UACJ Corporation

Inventor： Tomoki Yamayoshi ,  Taichi Suzuki ,  Hirokazu Tanaka

IPC: B23K35/28 ,  B23K35/02 ,  B32B15/01 ,  C22C21/02 ,  C22C21/10 ,  C22F1/043 ,  C22F1/053

CPC classification number: B23K35/288 ,  B23K35/0238 ,  B32B15/016 ,  C22C21/02 ,  C22C21/10 ,  C22F1/043 ,  C22F1/053

Abstract: An aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using a flux includes a brazing material cladded onto at least one side surface of a core material. An oxide is formed on a surface of the aluminum alloy brazing sheet by brazing heating, the oxide including any one or two or more of Mg, Li, and Ca and having a volume change ratio of 0.990 or less to a surface oxide film formed before brazing heating, and an atomic molar ratio of Mg, Li, and Ca to Al in the oxide formed on the surface of the aluminum alloy brazing sheet before brazing heating is 0.50 or less. The present invention provides an aluminum alloy brazing sheet having excellent brazability in brazing in an inert gas atmosphere without using a flux, and a method for manufacturing the same.

公开(公告)号：US20230150048A1

公开(公告)日：2023-05-18

申请号：US17916357

申请日：2021-03-26

Applicant: UACJ Corporation

Inventor： Shinichi Nakamura ,  Tomoki Yamayoshi ,  Taichi Suzuki ,  Hirokazu Tanaka

IPC: B23K1/19 ,  B23K35/02 ,  C22C21/10 ,  B23K35/28

CPC classification number: B23K1/19 ,  B23K35/0238 ,  B23K35/284 ,  C22C21/10 ,  B23K2103/10

Abstract: Provided is a brazed aluminum member brazed with a member formed of a brazing sheet, in which two or more grooves are provided on a surface of the brazed aluminum member in a fillet forming area, a groove depth (D1) of the grooves is 0.005 mm to 0.50 mm, a groove width (W1) of the grooves is 0.005 mm to 0.50 mm, a ratio (W1/D1) of the groove width (W1) to the groove depth (D1) is 10.00 or less, and a space (P1) between adjacent grooves is 0.00 mm to 0.30 mm. The present invention provides an aluminum alloy material and a method for manufacturing a brazed body that can secure good brazing properties even when the clearance between the jointed members is large in the case where the aluminum material is brazed without using a flux.

公开(公告)号：US20220281040A1

公开(公告)日：2022-09-08

申请号：US17628370

申请日：2020-07-06

Applicant: UACJ Corporation

Inventor： Tomoki Yamayoshi ,  Hidetoshi Kumagai ,  Hirokazu Tanaka ,  Taketoshi Toyama ,  Naoki Sugimoto ,  Nobuhiro Honma ,  Shogo Yamada ,  Takahiro Shinoda

IPC: B23K35/28 ,  B32B15/01 ,  B23K35/02 ,  C22C21/02 ,  C22C21/08 ,  C22F1/043 ,  C22F1/047

Abstract: An aluminum alloy brazing sheet is formed of a four-layer material formed of a brazing material, an intermediate material, a core material, and a. brazing material. The intermediate material comprises Mg of 0.40 to 6.00 mass %, and has a total of contents of Mn, Cr, and Zr being 0.10 mass % or more. The core material comprises Mg of 0.20 to 2.00 mass % and comprises one or two or more of Mn of 1.80 mass % or less, Si of 1.05 mass % or less, Fe of 1.00 mass % or less, Cu of 1.20 mass % or less, Ti of 0.30 mass % or less, Zr of 0.30 mass % or less, and Cr of 0.30 mass % or less. Each of the core material and the intermediate material has a grain size of 20 to 300 μm.

公开(公告)号：US20210354250A1

公开(公告)日：2021-11-18

申请号：US17287293

申请日：2019-10-25

Applicant: UACJ Corporation

Inventor： Tomoki Yamayoshi ,  Hidetoshi Kumagai ,  Hirokazu Tanaka

IPC: B23K35/02 ,  B32B15/01 ,  B23K35/28 ,  C22C21/02 ,  C22C21/06 ,  C22F1/047 ,  C22F1/043

Abstract: An aluminum alloy brazing sheet used for brazing of an aluminum material in an inert gas atmosphere or in vacuum is formed of a two-layer material in which a brazing material and a core material are stacked in this order. The core material is formed of an aluminum alloy and has a grain size of 20 to 300 μm, and the aluminum alloy contains Mn of 0.50 to 2.00 mass %, Mg of 0.40 to 2.00 mass %, Si of 1.50 mass % or less, and Fe of 1.00 mass % or less, with the balance being aluminum and inevitable impurities. The brazing material is formed of an aluminum alloy containing Si of 4.00 to 13.00 mass % with the balance being aluminum and inevitable impurities, and, in a drop-type fluidity test, a ratio α (α=Ka/Kb) of a fluid coefficient Ka is 0.50 or more.

公开(公告)号：US12064832B2

公开(公告)日：2024-08-20

申请号：US17287228

申请日：2019-10-25

Applicant: UACJ Corporation

Inventor： Tomoki Yamayoshi ,  Hidetoshi Kumagai ,  Hirokazu Tanaka

IPC: B23K35/28 ,  B23K35/02 ,  B23K35/38 ,  B32B15/01 ,  B32B15/04 ,  B32B15/20 ,  C22C21/00 ,  C22C21/02 ,  C22C21/04 ,  C22C21/06 ,  C22C21/08 ,  C22C21/10 ,  C22F1/04 ,  C22F1/043 ,  C22F1/047 ,  C22F1/053

CPC classification number: B23K35/288 ,  B23K35/0238 ,  B23K35/286 ,  B23K35/383 ,  B32B15/016 ,  B32B15/04 ,  B32B15/043 ,  B32B15/20 ,  C22C21/00 ,  C22C21/02 ,  C22C21/04 ,  C22C21/06 ,  C22C21/08 ,  C22C21/10 ,  C22F1/04 ,  C22F1/043 ,  C22F1/047 ,  C22F1/053 ,  Y10T428/12736 ,  Y10T428/12764

Abstract: An aluminum alloy brazing sheet is formed of a brazing material, an intermediate material, a core material, and a brazing material. The intermediate material contains Mg of 0.40 to 6.00 mass %, and has total of contents of Mn, Cr, and Zr being 0.10 mass % or more. The core material contains Mg of 0.20 to 2.00 mass % and one or two or more of Mn of 1.80 mass % or less, Si of 1.50 mass % or less, Fe of 1.00 mass % or less, Cu of 1.20 mass % or less, Ti of 0.30 mass % or less, Zr of 0.30 mass % or less, and Cr of 0.30 mass % or less. Each of the core material and the intermediate material has a grain size of 20 to 300 μm, and each of the brazing materials contain Si of 4.00 to 13.00 mass %.

公开(公告)号：US20230134532A1

公开(公告)日：2023-05-04

申请号：US17913489

申请日：2021-03-25

Applicant: UACJ Corporation

Inventor： Tomoki Yamayoshi ,  Shinichi Nakamura ,  Taichi Suzuki ,  Hirokazu Tanaka ,  Shogo Yamada ,  Taro Fukuda ,  Yosuke Uchida ,  Nobuhiro Honma

IPC: B23K35/02 ,  C22C21/10 ,  C22C21/08 ,  C22C21/02 ,  B23K35/28

Abstract: An aluminum alloy bare material for a member to be brazed by flux-free brazing to a brazing sheet including a brazing material formed of an aluminum alloy that includes 3.00 to 13.00 mass % of Si and 0.10 to 2.00 mass % of Mg with the balance being Al and inevitable impurities, in which the aluminum alloy bare material for the member to be brazed is formed of an aluminum alloy including 0.004 to 6.00 mass % of Zn and 0.004 to 3.00 mass % of Mg with the balance being Al and inevitable impurities. According to the present invention, aluminum alloy materials can be provided for members to be well brazed to the brazing sheet with the brazing material including Mg when an aluminum material is brazed by flux-free brazing.

公开(公告)号：US20220250195A1

公开(公告)日：2022-08-11

申请号：US17630006

申请日：2020-07-06

Applicant: UACJ Corporation

Inventor： Tomoki Yamayoshi ,  Hidetoshi Kumagai ,  Hirokazu Tanaka ,  Taketoshi Toyama ,  Naoki Sugimoto ,  Nobuhiro Honma ,  Shogo Yamada ,  Takahiro Shinoda

IPC: B23K35/28 ,  B23K35/02 ,  C22F1/047 ,  C22C21/08 ,  C21D9/46

Abstract: An aluminum alloy brazing sheet used for brazing of an aluminum material in an inert gas atmosphere or in vacuum is formed of a two-layer material in which a brazing material and a core material are stacked in this order. The core material is formed of an aluminum alloy and has a grain size of 20 to 300 μm, and the aluminum alloy includes Mn of 0.50 to 2.00 mass %, Mg of 0.40 to 2.00 mass %, Si of 1.50 mass % or less, and Fe of 1.00 mass % or less. The brazing material is formed of an aluminum alloy including Si of 4.00 to 13.00 mass % and one or two or more of Mn of 2.00 mass or less, Ti of 0.30 mass % or less, Zr of 0.30 mass % or less, and Cr of 0.30 mass % or less.

公开(公告)号：US20210394313A1

公开(公告)日：2021-12-23

申请号：US17287283

申请日：2019-10-25

Applicant: UACJ Corporation

Inventor： Tomoki Yamayoshi ,  Hidetoshi Kumagai ,  Hirokazu Tanaka

IPC: B23K35/28 ,  C22F1/053 ,  B23K35/02 ,  B32B15/01

Abstract: An aluminum alloy brazing sheet formed of a brazing material, an intermediate material, a core material, and a brazing material. The intermediate material contains Mg of 0.40 to 6.00 mass % and Zn exceeding 2.00 mass % and equal to or less than 8.00 mass %. The core material contains Mg of 0.40 to 2.00 mass % and one or two or more of Mn of 1.80 mass % or less, Si of 1.50 mass % or less, Fe of 1.00 mass % or less, Cu of 1.20 mass % or less, Ti of 0.30 mass % or less, Zr of 0.30 mass % or less, and Cr of 0.30 mass % or less. Each of the core material and the intermediate material has a grain size of 20 to 300 μm, and each of the brazing materials comprises Si of 4.00 to 13.00 mass %.

公开(公告)号：US20210394312A1

公开(公告)日：2021-12-23

申请号：US17287267

申请日：2019-10-25

Applicant: UACJ Corporation ,  DENSO CORPORATION

Inventor： Tomoki Yamayoshi ,  Hidetoshi Kumagai ,  Hirokazu Tanaka ,  Taketoshi Toyama ,  Naoki Sugimoto ,  Nobuhiro Honma ,  Shogo Yamada

IPC: B23K35/28 ,  B32B15/01 ,  B23K35/02 ,  C22C21/02 ,  C22C21/08 ,  C22F1/043 ,  C22F1/047

Abstract: An aluminum alloy brazing sheet used for brazing of an aluminum material in an inert gas atmosphere or in vacuum is formed of a two-layer material in which a brazing material and a core material are stacked. The core material is formed of an aluminum alloy and has a grain size of 20 to 300 μm, and the aluminum alloy contains Mn of 0.50 to 2.00 mass %, Mg of 0.40 to 2.00 mass %. Si of 1.50 mass % or less, Fe of 1.00 mass % or less, and Ti of 0.10 to 0.30 mass %, with the balance being aluminum and inevitable impurities. The brazing material is formed of an aluminum alloy containing Si of 4.00 to 13.00 mass % with the balance being aluminum and inevitable impurities. In a drop-type fluidity test, a ratio α (α=Ka/Kb) of a fluid coefficient Ka is 0.50 or more.

公开(公告)号：US10788275B2

公开(公告)日：2020-09-29

申请号：US15528256

申请日：2015-11-18

Applicant: DENSO CORPORATION ,  UACJ Corporation

Inventor： Shusuke Otsuki ,  Shoei Teshima ,  Yuusuke Kitoh ,  Jun Abei ,  Tomohiro Shoji ,  Naoki Yamashita ,  Toshikazu Tanaka ,  Hirokazu Tanaka

IPC: B23K35/02 ,  F28F21/08 ,  B23K35/28 ,  C22C21/00 ,  C22C21/04 ,  C22C21/10 ,  C22C21/02

Abstract: An aluminum alloy clad material includes a core material, one side being clad with cladding material 1, the other side being clad with cladding material 2, the core material including an aluminum alloy that includes 0.5 to 1.8% of Mn, and limited to 0.05% or less of Cu, with the balance being Al and unavoidable impurities, the cladding material 1 including an aluminum alloy that includes 3 to 10% of Si, and 1 to 10% of Zn, with the balance being Al and unavoidable impurities, and the cladding material 2 including an aluminum alloy that includes 3 to 13% of Si, and limited to 0.05% or less of Cu, with the balance being Al and unavoidable impurities, wherein the Si content X (%) in the cladding material 1 and the Si content Y (%) in the cladding material 2 satisfy the value (Y−X) is −1.5 to 9%.