公开(公告)号：US11136652B2

公开(公告)日：2021-10-05

申请号：US15212083

申请日：2016-07-15

Applicant: UACJ Corporation

Inventor： Wataru Narita ,  Atsushi Fukumoto

IPC: C22C21/16 ,  C22F1/057 ,  C22C21/14 ,  F28F21/08 ,  B23K35/02 ,  B23K35/28 ,  B22D7/00 ,  B23K1/00 ,  B21B1/22 ,  C22C21/00 ,  C22F1/04 ,  B23K35/22 ,  F28F9/18 ,  F28F9/02 ,  C22C21/10 ,  C22C21/02 ,  B23K101/14 ,  B23K103/10 ,  C22F1/00 ,  B21B3/00

Abstract: An aluminum alloy material comprises: Si: less than 0.2 mass %, Fe: 0.1 to 0.3 mass %, Cu: 1.0 to 2.5 mass %, Mn: 1.0 to 1.6 mass %, and Mg: 0.1 to 1.0 mass %, the balance being Al and incidental impurities. A number density of Al—Mn compound having a circle equivalent diameter of not less than 0.1 μm is not less than 1.0×105 mm−2, and a number density of Al2Cu having a circle equivalent diameter of not less than 0.1 μm is not more than 1.0×105 mm−2.

公开(公告)号：US20190184501A1

公开(公告)日：2019-06-20

申请号：US16328861

申请日：2017-08-24

Applicant: UACJ Corporation

Inventor： Atsushi Fukumoto ,  Yasunaga Itoh ,  Shoichi Sakoda ,  Tomoki Yamayoshi

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

CPC classification number: B23K35/288 ,  B23K1/00 ,  B23K1/19 ,  B23K31/02 ,  B23K35/0238 ,  B23K35/22 ,  B23K35/28 ,  B23K2101/14 ,  B23K2103/10 ,  B32B15/016 ,  C22C21/00 ,  C22F1/00 ,  C22F1/04

Abstract: An aluminum alloy brazing sheet is disclosed including a core material made of pure aluminum or aluminum alloy, one side or both sides of the core material, being clad with a brazing material, with an intermediate material interposed between the core material and the brazing material, the intermediate material including 0.4 to 6 mass % of Mg, further including at least one of Mn, Cr, and Zr, and the balance being Al and inevitable impurities, having the Mn content not more than 2.0 mass %, the Cr content not more than 0.3 mass %, and the Zr content not more than 0.3 mass %, with the total content of Mn, Cr, and Zr being at least 0.1 mass %, the brazing material including 4 to 13 mass % of Si, and the balance being Al and inevitable.

公开(公告)号：US10161693B2

公开(公告)日：2018-12-25

申请号：US14987387

申请日：2016-01-04

Applicant: UACJ Corporation

Inventor： Atsushi Fukumoto ,  Junichi Mochizuki ,  Akio Niikura

IPC: C22C21/00 ,  F28F21/08 ,  B22D11/06 ,  C22F1/04 ,  C22C21/02 ,  F28F1/12 ,  B22D11/00 ,  C21D1/26 ,  C22F1/043 ,  F28F1/06 ,  C22F1/00

Abstract: An aluminum alloy fin material for heat exchangers, containing 0.5 to 1.5 mass % of Si; more than 1.0 mass % but not more than 2.0 mass % of Fe; 0.4 to 1.0 mass % of Mn; and 0.4 to 1.0 mass % of Zn, with the balance being Al and unavoidable impurities, wherein a metallographic microstructure before braze-heating is such that a density of second phase particles having a circle-equivalent diameter of less than 0.1 μm is less than 1×107 particles/mm2, and that a density of second phase particles having a circle-equivalent diameter of 0.1 μm or more is 1×105 particles/mm2 or more, wherein a tensile strength before braze-heating, TSB (N/mm2), a tensile strength after braze-heating, TSA (N/mm2), and a fin sheet thickness, t (μm), satisfy: 0.4≤(TSB−TSA)/t≤2.1, and wherein the sheet thickness is 150 μm or less; and a method of producing the same.

公开(公告)号：US20180297138A1

公开(公告)日：2018-10-18

申请号：US15768686

申请日：2016-10-13

Applicant: UACJ Corporation

Inventor： Tomoki Yamayoshi ,  Atsushi Fukumoto

IPC: B23K1/00 ,  B23K35/28 ,  B23K35/02

Abstract: An aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using flux includes a core material of aluminum or aluminum alloy, and a brazing material of aluminum alloy including Si of 4.0 mass % to 13.0 mass % and cladding one side surface or both side surfaces of the core material. One or both of the core material and the brazing material includes any one or two or more types of X atoms (X is Mg, Li, Be, Ca, Ce, La, Y, and Zr). The aluminum alloy brazing sheet is a brazing sheet in which oxide particles including the X atoms and having a volume change ratio of 0.99 or lower with respect to an oxide film before brazing heating are formed on a surface thereof, by brazing heating.

公开(公告)号：US10099320B2

公开(公告)日：2018-10-16

申请号：US14374969

申请日：2013-01-28

Applicant: DENSO CORPORATION ,  UACJ CORPORATION

Inventor： Sadayuki Kamiya ,  Shota Terachi ,  Kenji Negura ,  Makoto Ando ,  Atsushi Fukumoto ,  Yoshiyuki Oya ,  Akio Niikura

IPC: B32B15/01 ,  B23K35/02 ,  B23K1/19 ,  B23K35/28 ,  B23K35/22 ,  C22C21/00 ,  B23K1/00 ,  B23K101/00 ,  B23K101/14 ,  B23K103/10

Abstract: An aluminum alloy brazing sheet having high corrosion resistance is provided, which develops the sacrificial anticorrosion effect in both surfaces of the sheet, which has the brazing function in one of both the surfaces, and which prevents the occurrence of preferential corrosion. A channel forming component for a vehicular heat exchanger is also provided by utilizing the aluminum alloy brazing sheet. An aluminum alloy brazing sheet having high corrosion resistance includes an aluminum alloy core, a filler material clad on one surface of the core, and a sacrificial anode material clad on the other surface of the core, wherein the filler material, the sacrificial anode material, and the core have respective predetermined alloy compositions. A channel forming component for a vehicular heat exchanger is manufactured using the aluminum alloy brazing sheet having high corrosion resistance.

公开(公告)号：US20210207901A1

公开(公告)日：2021-07-08

申请号：US17056438

申请日：2019-05-17

Applicant: UACJ CORPORATION ,  DENSO CORPORATION

Inventor： Tomohiro Shoji ,  Yoshihiko Kyo ,  Atsushi Fukumoto ,  Yoshiyuki Oya ,  Takahiro Shinoda ,  Koichi Nakashita ,  Naoto Goto

IPC: F28F21/08 ,  C22C21/10

Abstract: 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.

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：US20210071970A1

公开(公告)日：2021-03-11

申请号：US17042358

申请日：2019-03-27

Applicant: UACJ Corporation ,  DENSO CORPORATION

Inventor： Yoshiyuki Oya ,  Tomohiro Shoji ,  Atsushi Fukumoto ,  Kouki Nishiyama ,  Toru Ikeda ,  Takahiro Shinoda

IPC: F28F21/08 ,  C22C21/14 ,  C22C21/16 ,  C22C21/10 ,  C22C21/02

Abstract: 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%.

公开(公告)号：US20200239989A1

公开(公告)日：2020-07-30

申请号：US15760857

申请日：2016-09-09

Applicant: UACJ CORPORATION

Inventor： Makoto Ando ,  Atsushi Fukumoto

IPC: C22F1/053 ,  C22C21/10 ,  F28F21/08

Abstract: There are provided: an aluminum alloy fin material for a heat exchanger, the aluminum alloy fin material including an aluminum alloy including 0.70 to 1.50 mass % Si, 0.05 to 2.00 mass % Fe, 1.0 to 2.0 mass % Mn, 0.5 to 4.0 mass % Zn, with a balance consisting of Al and inevitable impurities, in which before brazing heating, the amount of solid solution Si is 0.60 mass % or less, and the amount of solid solution Mn is 0.60 mass % or less, and in which a recrystallization temperature in a temperature rise process during the brazing heating is 450° C. or less; a method of producing the aluminum alloy fin material; a heat exchanger using the aluminum alloy fin material; and a method of producing the heat exchanger.

公开(公告)号：US20180252485A1

公开(公告)日：2018-09-06

申请号：US15901216

申请日：2018-02-21

Applicant: UACJ CORPORATION

Inventor： Yusuke Ohashi ,  Atsushi Fukumoto

IPC: F28F21/08 ,  F28F19/00 ,  C22C21/10 ,  C22C21/00

CPC classification number: F28F21/084 ,  C22C21/00 ,  C22C21/10 ,  C22F1/04 ,  C22F1/053 ,  F28F1/126 ,  F28F19/00 ,  F28F2275/04

Abstract: A 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, and one or more kinds of 0.05 to 0.3 mass % of Zr, 0.05 to 0.3 mass % of Cr, and 0.05 to 0.3 mass % of V, 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 before braze-heating is 3.0×106 particles/mm2 or more, an amount of solid solution of Mn is 0.3 mass % or less and a respective amount of solid solution of Zr, Cr, and V is 0.1 mass % or less, and a recrystallization completion temperature during a temperature rise at the time of braze-heating is 450° C. or less.