公开(公告)号：US20240316667A1

公开(公告)日：2024-09-26

申请号：US18693701

申请日：2022-08-09

Applicant: UACJ Corporation

Inventor： Tatsuya Ide ,  Yutaka Yanagawa ,  Makoto Ando ,  Takashi Urahama ,  Toshihide Ninagawa

IPC: B23K1/19 ,  B23K35/28 ,  C22F1/043 ,  C22F1/047

CPC classification number: B23K1/19 ,  B23K35/286 ,  C22F1/043 ,  C22F1/047

Abstract: Provided is a brazing sheet that can exhibit excellent brazability in brazing an aluminum material without using flux in an inert gas atmosphere such as nitrogen gas atmosphere. An aluminum alloy brazing sheet to be used for brazing in an inert gas atmosphere is an aluminum alloy brazing sheet comprising: a core material; and a brazing material clad on one side or both sides of the core material, wherein the core material is made of an aluminum alloy comprising Mg at 0.10 to 0.50 mass % with the balance being aluminum and inevitable impurities, the brazing material is made of an aluminum alloy comprising Si at 6.00 to 13.00 mass % and Mg at a content limited to less than 0.05 mass % with the balance being aluminum and inevitable impurities, and a Mg integration value from a surface of the brazing material to a depth of 30 nm is 150 atm %×nm or less.

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：US11807919B2

公开(公告)日：2023-11-07

申请号：US16475942

申请日：2017-12-01

Applicant: UACJ Corporation

Inventor： Wataru Nakagawa ,  Atsushi Fukumoto ,  Junichi Mochizuki ,  Tatsuya Ide

IPC: C22C21/10 ,  B21B3/00 ,  B22D7/00 ,  C22F1/053 ,  F28F21/08

CPC classification number: C22C21/10 ,  B21B3/00 ,  B22D7/005 ,  C22F1/053 ,  F28F21/084 ,  B21B2003/001

Abstract: An aluminum alloy fin material for a heat exchanger is made of an aluminum alloy including 0.05 mass % to 0.5 mass % of Si, 0.05 mass % to 0.7 mass % of Fe, 10 mass % to 2.0 mass % of Mn, 0.5 mass % to 1.5 mass % of Cu, and 3.0 mass % to 7.0 mass % of Zn, with the balance being Al and unavoidable impurities. In an L-ST plane thereof, second-phase grains having an equivalent circle diameter equal to or more than 0.030 μm and less than 0.50 μm have a perimeter density of 0.30 μm/μm2 or more, second-phase grains having an equivalent circle diameter equal to or more than 0.50 μm have a perimeter density of 0.030 μm/μm2 or more, and specific resistance thereof at 20° C. is 0.030 μΩm or more.

公开(公告)号：US20200070286A1

公开(公告)日：2020-03-05

申请号：US16467277

申请日：2017-12-01

Applicant: UACJ Corporation

Inventor： Tatsuya Ide ,  Tomohiro Shoji ,  Dai Yamamoto

IPC: B23K35/02 ,  C22F1/057 ,  C22C21/12

Abstract: An aluminum alloy includes: a core material made of an aluminum alloy including Si, Cu, and Mn, with the balance being Al and unavoidable impurities; a brazing material cladded onto one side surface of the core material, and made of an aluminum alloy including Si, with the balance being Al and unavoidable impurities; and a sacrificial anode material cladded onto the other side surface of the core material, and made of an aluminum alloy including Zn and Si, with the balance being Al and unavoidable impurities, wherein a total number density of single phase pure Si and a intermetallic compound existing in the sacrificial anode material and having a grain size of 0.1 μm or more and 1.0 μm or less is 1×103/mm2 or more and 1×106/mm2 or less.

公开(公告)号：US11571769B2

公开(公告)日：2023-02-07

申请号：US17268283

申请日：2019-09-05

Applicant: UACJ Corporation

Inventor： Yutaka Yanagawa ,  Tatsuya Ide ,  Taichi Suzuki ,  Tomoki Yamayoshi

IPC: B32B15/01 ,  B23K35/02 ,  B23K20/02 ,  B23K35/28 ,  C22C21/02 ,  C23F1/20

Abstract: In a brazing sheet manufacturing method, a cladding slab is prepared by overlaying at least a core-material slab composed of an aluminum material and a filler-material slab composed of an Al—Si series alloy, in which a metal element that oxidizes more readily than Al is included in at least one of the slabs. A clad sheet is prepared by hot rolling this cladding slab, which then has at least a core material layer composed of the core-material slab and a filler material layer composed of the filler-material slab and disposed on at least one side of the core material. Then, a surface of the clad sheet is etched using a liquid etchant that contains an acid. Subsequently, the clad sheet is cold rolled to a desired thickness. In flux-free brazing, such a brazing sheet is capable of curtailing degradation in brazeability caused by fluctuations in dew point and oxygen concentration.

公开(公告)号：US11260476B2

公开(公告)日：2022-03-01

申请号：US16467277

申请日：2017-12-01

Applicant: UACJ Corporation

Inventor： Tatsuya Ide ,  Tomohiro Shoji ,  Dai Yamamoto

IPC: B32B15/01 ,  B23K35/02 ,  C22C21/12 ,  C22F1/057

Abstract: An aluminum alloy includes: a core material made of an aluminum alloy including Si, Cu, and Mn, with the balance being Al and unavoidable impurities; a brazing material cladded onto one side surface of the core material, and made of an aluminum alloy including Si, with the balance being Al and unavoidable impurities; and a sacrificial anode material cladded onto the other side surface of the core material, and made of an aluminum alloy including Zn and Si, with the balance being Al and unavoidable impurities, wherein a total number density of single phase pure Si and a intermetallic compound existing in the sacrificial anode material and having a grain size of 0.1 μm or more and 1.0 μm or less is 1×103/mm2 or more and 1×106/mm2 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.