公开(公告)号：US11235428B2

公开(公告)日：2022-02-01

申请号：US16977900

申请日：2019-03-05

Applicant: UACJ Corporation ,  DENSO CORPORATION

Inventor： Tatsuya Ide ,  Yutaka Yanagawa ,  Shogo Yamada ,  Takahiro Shinoda ,  Shingo Ono

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

Abstract: A flux-free brazing aluminum alloy brazing sheet includes: a core material formed of aluminum alloy comprising Si of 0.50 to 0.90 mass %, Cu of 0.30 to 2.50 mass %, and Mn of 1.40 to 1.80 mass %, with a Mg content limited to 0.05 mass % or less, and with the balance being Al and inevitable impurities; an intermediate material being formed of aluminum alloy comprising Mg of 0.40 to 1.00 mass %, and Zn of 2.00 to 6.00 mass %, with the balance being Al and inevitable impurities; and a brazing material being formed of aluminum alloy comprising Si of 6.00 to 13.00 mass %, Mg of 0.05 to 0.40 mass %, and Bi of 0.010 to 0.050 mass %, with the balance being Al and inevitable impurities.

公开(公告)号：US11780034B2

公开(公告)日：2023-10-10

申请号：US17279873

申请日：2019-09-27

Applicant: UACJ Corporation ,  DENSO CORPORATION

Inventor： Shinichi Nakamura ,  Tomoki Yamayoshi ,  Takeyoshi Dokou ,  Takahiro Shinoda ,  Shogo Yamada ,  Yoshihiko Sonoda ,  Naoki Sugimoto ,  Nobuhiro Honma ,  Taketoshi Toyama

IPC: B23K35/28 ,  B23K20/04 ,  B23K35/02 ,  C22C21/02 ,  C22C21/08 ,  C23F1/20 ,  F28F3/02 ,  B23K103/10 ,  B23K101/14

CPC classification number: B23K35/286 ,  B23K20/04 ,  B23K35/0238 ,  C22C21/02 ,  C22C21/08 ,  C23F1/20 ,  F28F3/025 ,  B23K2101/14 ,  B23K2103/10 ,  F28F2275/04

Abstract: A brazing sheet (1) includes a core material (11) composed of an Al alloy that contains 0.20-3.0 mass % of Mg; and a filler material (12) layered on the core material and composed of an Al alloy that contains Mg, 6.0-13.0 mass % of Si, and more than 0.050 mass % and 1.0 mass % or less of Bi. The Mg concentration of the filler material becomes continuously lower in a direction from a boundary (122) with the core material to an outermost surface (121). The Mg concentration of the filler material is 0.150 mass % or less at a first depth from the outermost surface that is ⅛ of a thickness (tf) of the filler material and is 5-90% of the amount of Mg in the core material at a second depth from the outermost surface that is ⅞ of the thickness of the filler material.

公开(公告)号：US20180251874A1

公开(公告)日：2018-09-06

申请号：US15907572

申请日：2018-02-28

Applicant: UACJ Corporation ,  DENSO CORPORATION

Inventor： Yusuke Ohashi ,  Atsushi Fukumoto ,  Shogo Yamada ,  Shinichiro Takise ,  Takahiro Shinoda

IPC: C22C21/10 ,  F28F21/08

CPC classification number: C22C21/10 ,  F28F21/084 ,  F28F2275/04

Abstract: [Problem to be Solved]To provide a fin material made of an aluminum alloy for heat exchangers with no fin buckling deformation and having excellent buckling resistance in a temperature range of 400° C. to 580° C. before a filler alloy melts at the time of brazing.[Solution]The fin material made of an aluminum alloy for heat exchangers contains 1.0 to 2.0 mass % of Mn, 0.7 to 1.4 mass % of Si, and 0.05 to 0.3 mass % of Fe, with the balance being Al and unavoidable impurities, in which a number density of intermetallic compounds having a circle-equivalent diameter of 0.025 to 0.4 μm is 3.0×106 particles/mm2 or more, and an amount of solid solution of Mn is 0.3 mass % or less.

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：US20210087657A1

公开(公告)日：2021-03-25

申请号：US17108286

申请日：2020-12-01

Applicant: UACJ Corporation ,  DENSO CORPORATION

Inventor： Yusuke Ohashi ,  Atsushi Fukumoto ,  Shogo Yamada ,  Shinichiro Takise ,  Takahiro Shinoda

IPC: C22C21/10 ,  F28F21/08

Abstract: A method of manufacturing a fin material made of an aluminum alloy for heat exchangers with no fin buckling deformation and having excellent buckling resistance in a temperature range of 400° C. to 580° C. before a filler alloy melts at the time of brazing is provided. The fin material made of an aluminum alloy for heat exchangers contains 1.0 to 2.0 mass % of Mn, 0.7 to 1.4 mass % of Si, and 0.05 to 0.3 mass % of Fe, with the balance being Al and unavoidable impurities, in which a number density of intermetallic compounds having a circle-equivalent diameter of 0.025 to 0.4 μm is 3.0×106 particles/mm2 or more, and an amount of solid solution of Mn is 0.3 mass % or less.

公开(公告)号：US20210039207A1

公开(公告)日：2021-02-11

申请号：US16977900

申请日：2019-03-05

Applicant: UACJ Corporation ,  DENSO CORPORATION

Inventor： Tatsuya Ide ,  Yutaka Yanagawa ,  Shogo Yamada ,  Takahiro Shinoda ,  Shingo Ono

IPC: B23K35/28 ,  B23K35/02

Abstract: A flux-free brazing aluminum alloy brazing sheet includes: a core material formed of aluminum alloy comprising Si of 0.50 to 0.90 mass %, Cu of 0.30 to 2.50 mass %, and Mn of 1.40 to 1.80 mass %, with a Mg content limited to 0.05 mass % or less, and with the balance being Al and inevitable impurities; an intermediate material being formed of aluminum alloy comprising Mg of 0.40 to 1.00 mass %, and Zn of 2.00 to 6.00 mass %, with the balance being Al and inevitable impurities; and a brazing material being formed of aluminum alloy comprising Si of 6.00 to 13.00 mass %, Mg of 0.05 to 0.40 mass %, and Bi of 0.010 to 0.050 mass %, with the balance being Al and inevitable impurities.

公开(公告)号：US09364913B2

公开(公告)日：2016-06-14

申请号：US14264432

申请日：2014-04-29

Applicant: DENSO CORPORATION ,  Chiba Institute of Technology ,  Canon Machinery Inc. ,  UACJ Corporation

Inventor： Shin Takewaka ,  Shogo Yamada ,  Shumpei Ozawa ,  Tohru Nagasawa ,  Haruhiko Matsushita ,  Yasunaga Itoh ,  Tomoki Yamayoshi

IPC: B23K31/02 ,  B23K1/00 ,  B23K1/20 ,  B23K1/008 ,  B23K1/012 ,  B23K1/19 ,  B23K35/00 ,  B23K35/28 ,  B23K35/38 ,  B23K35/02 ,  C22C21/02 ,  F28F3/02 ,  F28F21/08 ,  F28D1/03

CPC classification number: B23K1/0012 ,  B23K1/008 ,  B23K1/012 ,  B23K1/19 ,  B23K1/20 ,  B23K35/00 ,  B23K35/004 ,  B23K35/0222 ,  B23K35/28 ,  B23K35/286 ,  B23K35/38 ,  B23K2101/14 ,  B23K2103/10 ,  B32B15/016 ,  C22C21/00 ,  C22C21/02 ,  F28D1/0308 ,  F28F3/025 ,  F28F3/12 ,  F28F21/089 ,  F28F2275/04 ,  Y10T428/12764

Abstract: In a method for brazing a sheet material without use of flux, an inert gas is firstly introduced into an oxygen pump to reduce an oxygen partial pressure in the inert gas to 1×10−10 Pa or less, and the sheet material is heated in a brazing furnace in an atmosphere of the inert gas discharged from the oxygen pump. A core alloy of the sheet material or a brazing filler alloy cladded to a surface of the core alloy contains Mg. Both the core alloy and the brazing filler alloy may contain Mg. Accordingly, brazability of the sheet material is sufficiently improved.

Abstract translation: 在不使用焊剂的情况下对片材进行钎焊的方法中，首先将惰性气体引入氧气泵中，将惰性气体中的氧分压降低至1×10 -10 Pa以下，并将片材加热 在氧气泵排出的惰性气体气氛中的钎焊炉。 包覆在芯合金的表面的片材或钎焊料合金的芯合金含有Mg。 核心合金和钎焊合金都可以含有Mg。 因此，片材的钎焊性充分提高。

公开(公告)号：US20140329109A1

公开(公告)日：2014-11-06

申请号：US14264432

申请日：2014-04-29

Applicant: DENSO CORPORATION ,  Chiba Institute of Technology ,  Canon Machinery Inc. ,  UACJ Corporation

Inventor： Shin Takewaka ,  Shogo Yamada ,  Syumpei Ozawa ,  Tohru Nagasawa ,  Haruhiko Matsushita ,  Yasunaga Itoh ,  Tomoki Yamayoshi

IPC: B23K1/00 ,  B23K1/20

CPC classification number: B23K1/0012 ,  B23K1/008 ,  B23K1/012 ,  B23K1/19 ,  B23K1/20 ,  B23K35/00 ,  B23K35/004 ,  B23K35/0222 ,  B23K35/28 ,  B23K35/286 ,  B23K35/38 ,  B23K2101/14 ,  B23K2103/10 ,  B32B15/016 ,  C22C21/00 ,  C22C21/02 ,  F28D1/0308 ,  F28F3/025 ,  F28F3/12 ,  F28F21/089 ,  F28F2275/04 ,  Y10T428/12764

Abstract: In a method for brazing a sheet material without use of flux, an inert gas is firstly introduced into an oxygen pump to reduce an oxygen partial pressure in the inert gas to 1×10−10 Pa or less, and the sheet material is heated in a brazing furnace in an atmosphere of the inert gas discharged from the oxygen pump. A core alloy of the sheet material or a brazing filler alloy cladded to a surface of the core alloy contains Mg. Both the core alloy and the brazing filler alloy may contain Mg. Accordingly, brazability of the sheet material is sufficiently improved.

Abstract translation: 在不使用焊剂的情况下对片材进行钎焊的方法中，首先将惰性气体引入氧气泵中，将惰性气体中的氧分压降低至1×10 -10 Pa以下，并将片材加热 在氧气泵排出的惰性气体气氛中的钎焊炉。 包覆在芯合金的表面的片材或钎焊料合金的芯合金含有Mg。 核心合金和钎焊合金都可以含有Mg。 因此，片材的钎焊性充分提高。

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：US11491587B2

公开(公告)日：2022-11-08

申请号：US17287267

申请日：2019-10-25

Applicant: UACJ Corporation

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

IPC: B32B15/01 ,  B23K35/28 ,  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.