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公开(公告)号：US20210199395A1
公开(公告)日：2021-07-01
申请号：US17056645
申请日：2019-05-17
发明人： Tomohiro Shoji , Yoshihiko Kyo , Atsushi Fukumoto , Yoshiyuki Oya , Takahiro Shinoda , Koichi Nakashita , Naoto Goto
摘要： An aluminum alloy heat exchanger includes a core material formed of an aluminum alloy comprising Mn of 0.60 to 2.00 mass % and Cu of 1.00 mass % or less, with the balance being Al and inevitable impurities, and a sacrificial anode material formed of an aluminum alloy comprising Zn of 2.50 to 10.00 mass %, with the balance being Al and inevitable impurities. Pitting potential of a sacrificial anode material surface of a tube of the aluminum alloy heat exchanger in a 5% NaCl solution is −800 (mV vs Ag/AgCl) or less, and pitting potential of an aluminum fin of the aluminum alloy heat exchanger in a 5% NaCl solution is less than the pitting potential of the sacrificial anode material surface of the tube of the aluminum alloy heat exchanger in a 5% NaCl solution.
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公开(公告)号：US20210033359A1
公开(公告)日：2021-02-04
申请号：US17043064
申请日：2019-03-27
发明人： Yoshiyuki Oya , Tomohiro Shoji , Atsushi Fukumoto , Kouki Nishiyama , Toru Ikeda , Takahiro Shinoda
摘要： An aluminum alloy heat exchanger for an exhaust gas recirculation system, which is a heat exchanger installed in an exhaust gas recirculation system of an internal combustion engine to cool the exhaust gas comprises a tube provided with a sacrificial anticorrosion material on a side along which the exhaust gas passes, and a fin brazed to the surface side of the sacrificial anticorrosion material of the tube, the fin having a pitting potential higher than the pitting potential of the surface of the sacrificial anticorrosion material of the tube. According to the disclosure, an aluminum alloy heat exchanger for an exhaust gas recirculation system having a long service life with effective function of the sacrificial anticorrosion even under an acidic environment in which an oxide film is weakened as a whole and pitting corrosion is unlikely to occur can be provided.
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公开(公告)号：US20210207901A1
公开(公告)日：2021-07-08
申请号：US17056438
申请日：2019-05-17
发明人： Tomohiro Shoji , Yoshihiko Kyo , Atsushi Fukumoto , Yoshiyuki Oya , Takahiro Shinoda , Koichi Nakashita , Naoto Goto
摘要： An aluminum alloy heat exchanger includes a core material formed of an aluminum alloy including Mn of 0.60 to 2.00 mass % and Cu of 1.00 mass % or less, with the balance being Al and inevitable impurities, and a sacrificial anode material formed of an aluminum alloy including Zn of 2.50 to 10.00 mass %, with the balance being Al and inevitable impurities. Pitting potential of a sacrificial anode material surface of a tube of the aluminum alloy heat exchanger in a 5% NaCl solution is −800 (mV vs Ag/AgCl) or less, and pitting potential of an aluminum fin of the aluminum alloy heat exchanger in a 5% NaCl solution is equal to or more than the pitting potential of the sacrificial anode material surface of the tube of the aluminum alloy heat exchanger in a 5% NaCl solution.
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公开(公告)号：US20210071970A1
公开(公告)日：2021-03-11
申请号：US17042358
申请日：2019-03-27
发明人： Yoshiyuki Oya , Tomohiro Shoji , Atsushi Fukumoto , Kouki Nishiyama , Toru Ikeda , Takahiro Shinoda
摘要： An aluminum alloy heat exchanger for an exhaust gas recirculation system, obtained by brazing: a tube material comprising at least a core material made of aluminum alloy comprising 0.10 to 1.50% of Si, 0.05 to 3.00% of Cu, and 0.40 to 2.00% of Mn, and a sacrificial anticorrosion material made of aluminum alloy comprising 2.00 to 6.00% of Zn, with a Si content of less than 0.10%, clad on the inner side surface of the core material; and a fin material comprising a core material made of aluminum alloy comprising 0.10 to 1.50% of Si, and 0.40 to 2.00% of Mn, with a Zn content of less than 0.05%, and a brazing material clad on both surfaces of the core material, made of aluminum alloy comprising 3.00 to 13.00% of Si, with a Zn content of less than 0.05%.
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公开(公告)号：US10788275B2
公开(公告)日：2020-09-29
申请号：US15528256
申请日：2015-11-18
发明人： Shusuke Otsuki , Shoei Teshima , Yuusuke Kitoh , Jun Abei , Tomohiro Shoji , Naoki Yamashita , Toshikazu Tanaka , Hirokazu Tanaka
摘要： 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%.
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公开(公告)号：US20210025663A1
公开(公告)日：2021-01-28
申请号：US17042365
申请日：2019-03-27
发明人： Yoshiyuki Oya , Tomohiro Shoji , Atsushi Fukumoto , Kouki Nishiyama , Toru Ikeda , Takahiro Shinoda
摘要： An aluminum alloy heat exchanger for an exhaust gas recirculation system, the heat exchanger obtained by brazing: a tube material comprising a core material comprising 0.05 mass % to 1.50 mass % of Si, 0.05 mass % to 3.00 mass % of Cu, and 0.40 mass % to 2.00 mass % of Mn, and a sacrificial anticorrosion material comprising 2.00 mass % to 6.00 mass % of Zn, clad on an inner side surface of the core material; and a fin material comprising a core material comprising 0.05 mass to 1.50 mass % of Si, and 0.40 mass % to 2.00 mass % of Mn, and a brazing material comprising 3.00 mass % to 13.00 mass % of Si, clad on both surfaces of the core material; the heat exchanger having a ratio of a surface area Sb (mm2) of the fin material to a surface area Sa (mm2) of the sacrificial anticorrosion material of less than 200%.
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公开(公告)号：US20200070286A1
公开(公告)日：2020-03-05
申请号：US16467277
申请日：2017-12-01
申请人： UACJ Corporation
发明人： Tatsuya Ide , Tomohiro Shoji , Dai Yamamoto
摘要： 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.
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公开(公告)号：US11260476B2
公开(公告)日：2022-03-01
申请号：US16467277
申请日：2017-12-01
申请人： UACJ Corporation
发明人： Tatsuya Ide , Tomohiro Shoji , Dai Yamamoto
摘要： 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.
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公开(公告)号：US20210187673A1
公开(公告)日：2021-06-24
申请号：US16076071
申请日：2017-02-14
申请人： UACJ CORPORATION
发明人： Toshiya Kondo , Makoto Ando , Tomohiro Shoji , Hidetoshi Kumagai
摘要： An aluminum alloy brazing sheet, a manufacturing method therefor, and a manufacturing method for an automotive heat exchanger. The aluminum alloy brazing sheet includes an aluminum alloy core material, a first brazing material that is clad to one surface of the core material, and a second brazing material that is clad to the other surface of the core material. The core material, the first brazing material, and the second brazing material each include a respective prescribed aluminum alloy. A count of an Al—Si—Fe intermetallic compound having an equivalent circle diameter of 0.5 to 80.0 μm in the second brazing material is less than or equal to 2,000 particles per mm2.
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公开(公告)号：US11015234B2
公开(公告)日：2021-05-25
申请号：US15527604
申请日：2015-11-18
申请人： UACJ CORPORATION
摘要： A three-layer clad material includes a core material, a cladding material 1, and a cladding material 2, the core material including an aluminum alloy that includes 0.5 to 1.8% of Mn, and either or both of more than 0.05% and less than 0.2% of Cu, and 0.05 to 0.30% of Ti, 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 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%.
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