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公开(公告)号：US11220728B2
公开(公告)日：2022-01-11
申请号：US16619536
申请日：2018-05-28
Applicant: UACJ Corporation , UACJ Extrusion Corporation
Inventor： Taichi Suzuki , Naoki Yamashita
IPC: C22C21/06
Abstract: An aluminum alloy pipe-shaped hollow material is produced by porthole extrusion. The aluminum alloy pipe-shaped hollow material includes an Al—Mg-based alloy containing Mg of 0.7 mass % or more and less than 2.5 mass %, and Ti of more than 0 mass % and 0.15 mass % or less, with the balance being Al and unavoidable impurities. A work hardening coefficient n-value is 0.25 or more and less than 0.43. The aluminum alloy pipe-shaped hollow material has an inner-surface ridged structure inside thereof, and an area ratio of the inner-surface ridged structure in a cross-section orthogonal to an extending direction of the aluminum alloy pipe-shaped hollow material is 1 to 30%. The present invention can provide an aluminum alloy pipe-shaped hollow material that is an aluminum alloy pipe-shaped hollow material of a 5000 series aluminum alloy produced by porthole extrusion and has excellent bending processability.
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公开(公告)号：US20230150069A1
公开(公告)日：2023-05-18
申请号：US17916436
申请日：2021-03-26
Applicant: UACJ Corporation
Inventor： Shinichi Nakamura , Tomoki Yamayoshi , Taichi Suzuki , Hirokazu Tanaka
CPC classification number: B23K35/0238 , B23K35/288 , 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 can provide an aluminum material and a method for producing a brazed product 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.
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公开(公告)号：US20220184750A1
公开(公告)日：2022-06-16
申请号：US17600705
申请日：2020-04-03
Applicant: UACJ Corporation
Inventor： Tomoki Yamayoshi , Taichi Suzuki , Hirokazu Tanaka
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.
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公开(公告)号：US11866807B2
公开(公告)日：2024-01-09
申请号：US17290564
申请日：2020-04-24
Applicant: UACJ Corporation , UACJ EXTRUSION CORPORATION
Inventor： Taichi Suzuki , Kiyotake Sawa , Shuhei Shakudo
Abstract: An aluminum alloy pipe includes a pipe body portion made of an Al—Mg series alloy that includes Mg at a concentration equal to or higher than 0.7 mass % and lower than 2.5 mass % and Ti at a concentration higher than 0 mass % and equal to or lower than 0.15 mass %, with the balance being Al and unavoidable impurities, and a Zn-containing layer being outside the pipe body portion and including Zn being diffused in the Al—Mg series alloy at a concentration equal to or higher than 0.1 mass %.
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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
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.
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Patent Agency Ranking
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
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.
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公开(公告)号：US20240416465A1
公开(公告)日：2024-12-19
申请号：US18704303
申请日：2022-10-11
Applicant: UACJ Corporation
Inventor： Taichi Suzuki , Tomoki Yamayoshi , Wataru Nakagawa , Makoto Ando
Abstract: An aluminum alloy brazing sheet has a core material of the aluminum alloy brazing sheet formed of an aluminum alloy comprising 0.20 mass % to 1.00 mass % of Si, 0.10 mass % to 0.80 mass % of Mn, and 0.20 mass % to 1.00 mass % of Mg, having a value of Mn content/Si content of 0.10 or more and less than 1.00, a value of Mg content+Si content of 0.60 mass % or more and less than 1.60 mass %, a Fe content of 0.40 mass % or less, a Cu content of 0.25 mass % or less, a Cr content of 0.10 mass % or less, a Zn content of 2.00 mass % or less, a Ti content of 0.10 mass % or less, and a Zr content of 0.10 mass % or less, with the balance being Al and inevitable impurities.
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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
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.
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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
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.
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公开(公告)号：US20180347017A1
公开(公告)日：2018-12-06
申请号：US15777798
申请日：2016-11-18
Applicant: UACJ CORPORATION
Inventor： Taichi Suzuki , Hidenori Hatta , Shuhei Shakudo
Abstract: An aluminum alloy material as one aspect of the present disclosure has a chemical composition including: Zn: more than 6.5% (mass %, same applies hereafter) and 8.5% or less; Mg: 0.5% or more and 1.5% or less; Cu: 0.10% or less; Fe: 0.30% or less; Si: 0.30% or less; Mn: less than 0.05%; Cr: less than 0.05%; Zr: 0.05% or more and 0.10% or less; and Ti: 0.001% or more and 0.05% or less, a balance including Al and inevitable impurities. In the aluminum alloy material, a mass ratio of Zn to Mg (Zn/Mg) is 5 or more and 16 or less, and a metallographic structure includes an equigranular recrystallized structure.
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