Patents Assigned to UACJ CORPORATION
  • Patent number: 9789564
    Abstract: The disclosed method relates to manufacturing a heat exchanger which causes no brazing defects, and a heat exchanger manufactured by the method. The method relates to manufacturing a heat exchanger having an aluminum alloy tube defining a cooling-medium flowing passage and a copper alloy tube defining a water flowing passage, wherein a heat exchange is carried out between a cooling medium flowing through the cooling-medium flowing passage and water flowing through the water flowing passage. The aluminum alloy tube and the copper alloy tube are brazed to each other at a temperature of less than 548° C.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 17, 2017
    Assignees: UACJ CORPORATION, DENSO CORPORATION
    Inventors: Akira Yanagida, Shoei Teshima, Takeshi Iguchi, Masakazu Morimoto, Kotaro Kitawaki, Kazuyoshi Nakashima, Takashi Murase
  • Patent number: 9786919
    Abstract: Current collector, an electrode structure, a non-aqueous electrolyte battery, and an electrical storage device having superior shut down function are provided. According to the present invention, a current collector having a resin layer on at least one side of a conductive substrate is provided. Here, thermoplastic resin particles substantially free of a conductive agent are dispersed in a thermosetting resin base material containing the conductive agent to structure the resin layer; a value of mass ratio given by (thermoplastic resin particles)/(conductive agent) is 0.3 to 1.5; and a value given by (average thickness of conductive agent)/(average thickness of thermoplastic resin particles) is 0.3 to 4.0.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: October 10, 2017
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Osamu Kato, Sohei Saito, Yukiou Honkawa, Mitsuyuki Wasamoto, Tsugio Kataoka, Satoshi Yamabe
  • Patent number: 9748527
    Abstract: An aluminum alloy sheet material for a lithium-ion battery can significantly reduce the number of welding defects (e.g., bead non-uniformity and underfill) that occur during laser welding. The aluminum alloy sheet material includes 0.8 to 1.5 mass % of Mn, 0.6 mass % or less of Si, 0.7 mass % or less of Fe, 0.2 mass % or less of Cu, and 0.2 mass % or less of Zn, with the balance being Al and unavoidable impurities, Al—Mn—Si-based intermetallic compounds having a maximum length of less than 1.0 ?m being distributed in a matrix of the aluminum alloy sheet material in a number equal to or larger than 0.25 per ?m2, and the area ratio of the intermetallic compounds being 3.0% or more when a field of view having an area of 5000 ?m2 is subjected to image analysis.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: August 29, 2017
    Assignee: UACJ CORPORATION
    Inventor: Koichiro Takiguchi
  • Patent number: 9741498
    Abstract: Provided are a current collector which has an excellent high-rate property and exerts a sufficient safety function when employed in a secondary battery or a capacitor, as well as an electrode, a secondary battery or a capacitor in which said current collector is employed. According to the invention, a current collector is provided which comprises: metal foil; and a conductive layer with a film thickness of 0.1 ?m to 10 ?m formed on a surface of said metal foil. Here, said conductive layer includes a conductive material and a binder material. A melting point of said binder material is 80° C. to 150° C. Further, said binder material shows, in differential scanning calorimetry (DSC) in a range from room temperature to 200° C., one or more endothermic peaks in the heating-up process. In a case where said binder material shows two or more endothermic peaks, each difference between said peaks is 15° C. or more. Moreover, said binder material shows one or more exothermic peaks in the cooling-down process.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: August 22, 2017
    Assignees: Furukawa Electric Co., Ltd., UACJ FOIL Corporation, UACJ Corporation
    Inventors: Takahiro Iida, Yasumasa Morishima, Takayori Ito, Hidekazu Hara, Tsugio Kataoka, Mitsuya Inoue, Satoshi Yamabe, Osamu Kato, Yukiou Honkawa, Sohei Saito, Tatsuhiro Yaegashi
  • Patent number: 9742009
    Abstract: At least one foil surface of an aluminum foil is roughened; and in arithmetic mean roughnesses Ra, stipulated in JIS B 0601:2001, of the roughened surface(s), A, which is the arithmetic mean roughness Ra measured in a direction at a right angle to a rolling direction during foil rolling, and B, which is the arithmetic mean roughness Ra measured in a direction parallel to the rolling direction during foil rolling, satisfy the following relationships: 0.15 ?m?A?2.0 ?m; 0.15 ?m?B?2.0 ?m; and 0.5?B/A?1.5. Preferably 50-1000 ?g/m2 of oil is adhered to the roughened foil surface. The oil is preferably rolling oil.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: August 22, 2017
    Assignee: UACJ CORPORATION
    Inventors: Tetsuya Motoi, Yasushi Funato
  • Patent number: 9732402
    Abstract: An aluminum alloy foil having superior formability is provided. An aluminum alloy foil, including 0.8 to 2.0 mass % of Fe, 0.05 to 0.2 mass % of Si, and 0.0025 to 0.5 mass % of Cu, with the rest consisting of Al and unavoidable impurities, wherein the aluminum alloy foil has an average crystal grain size of 20 ?m or less, and a number of intermetallic compounds existing in the aluminum alloy foil, the intermetallic compounds having a circle equivalent diameter of 1.0 to 5.0 ?m, is 1.0×104 grains/mm2 or more, is provided.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: August 15, 2017
    Assignee: UACJ CORPORATION
    Inventors: Masakazu Seki, Satoshi Suzuki
  • Patent number: 9718145
    Abstract: An aluminum clad member is produced by: disposing a joining assistance member at a joint interface between an Al core member and an Al skin member, which joining assistance member being formed by crossing Al wires with each other in longitudinal and lateral directions to form a grid, and having a structure in which spot-like thick portions having a thickness of 0.2-3.2 mm are formed at intersections of the Al wires and arranged in the longitudinal and lateral directions so as to be spaced apart from each other by a distance of 0.2-13 mm; and performing a hot rolling operation with respect to the thus obtained stack of the Al core member, the Al skin member and the joining assistance member, by partially fixing together those members at their peripheral portions or without fixing together those members, such that the joint interfaces is communicated with an ambient air.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: August 1, 2017
    Assignee: UACJ Corporation
    Inventors: Yasunaga Itoh, Yusuke Ohashi, Shoichi Sakoda
  • Patent number: 9715971
    Abstract: An object of the present invention is to provide an aluminum alloy foil for electrode current collectors having superior rolling properties, high conductivity, and high strength after the drying step following the application of the active material. According to the present invention, an aluminum alloy foil for electrode current collector, including 0.03 to 0.1% of Fe, 0.005 to 0.02% of Ti, 0 to 0.1% of Si, 0 to 0.01% of Cu, 99.85% or more of Al, with the rest being unavoidable impurities, wherein tensile strength of the aluminum alloy foil is 175 MPa or higher, and electrical conductivity of the aluminum alloy foil is 60% IACS or higher, is provided.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: July 25, 2017
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Satoshi Suzuki, Masakazu Seki, Tomohiko Furutani, Kenji Yamamoto
  • Patent number: 9698426
    Abstract: The present invention provides an aluminum alloy foil for electrode current collector, high in strength and superior in heat resistance after the active material coating/drying process of the manufacture of the battery, a manufacturing method thereof, and a lithium ion secondary battery. According to the present invention, an aluminum alloy foil for electrode current collector, including 0.1 to 0.5 mass % (hereinafter mass % is referred to as %) of Fe, 0.01 to 0.5% of Si, 0.01 to 0.2% of Cu, 0.01 to 0.5% of Mn, with the rest being Al and unavoidable impurities, wherein tensile strength of an aluminum alloy foil and a heat treatment selected from 24 hours at 100° C., 3 hours at 150° C., and 15 minutes at 200° C., is 210 MPa or higher, a manufacturing method thereof, and a lithium ion secondary battery are provided.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: July 4, 2017
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Tomohiko Furutani, Kenji Yamamoto, Satoshi Suzuki, Masakazu Seki
  • Patent number: 9676055
    Abstract: Providing a rotary tool for friction stir spot-welding, which makes it possible to join together two aluminum members superposed on each other, with a high degree of joint strength. The rotary tool has a probe which is provided in a central part of a distal end portion of a cylindrical tool body so as to extend coaxially with the tool body and which has a stepped structure consisting of an intermediate probe and a central probe which extend coaxially with each other. Distal end faces of the tool body and the intermediate probe respectively give a first shoulder surface and a second shoulder surface which are gradually recessed in a radially inward direction and connected to proximal portions of the respective intermediate and central probes.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: June 13, 2017
    Assignee: UACJ Corporation
    Inventor: Toshihiko Fukuda
  • Patent number: 9666867
    Abstract: An object of the present invention is to provide an aluminum alloy foil for an electrode current collector, the foil having a high strength after the drying step while keeping a high electrical conductivity. Disclosed is a method for manufacturing an aluminum alloy foil for electrode current collector, including: maintaining an aluminum alloy ingot comprising 0.03 to 0.1% of Fe, 0.01 to 0.1% of Si, 0.0001 to 0.01% of Cu, 0.005% or less of Mn, with the rest being Al and unavoidable impurities, at 550 to 620° C. for 1 to 20 hours, and subjecting the resulting ingot under a hot rolling with a starting temperature of 500° C. or higher and an end-point temperature of 255 to 300° C.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: May 30, 2017
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Masakazu Seki, Satoshi Suzuki, Kenji Yamamoto, Tomohiko Furutani
  • Patent number: 9662741
    Abstract: The metal forming method includes deforming a member to be formed (2) that includes a second metal and that has been heated and bringing the member into contact with a member to be bonded (3) that includes a first metal and that has been heated, in which the temperature of the member to be bonded (3) is a temperature at which a liquid phase percentage in the member to be bonded (3) is from 5 to 35%.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: May 30, 2017
    Assignee: UACJ Corporation
    Inventors: Tomoyuki Kudo, Takashi Murase, Takeshi Koshio
  • Patent number: 9659716
    Abstract: Provided is a technique to confirm the performance of the conductive resin layer of a current collector without actually preparing an electrode structure, a non-aqueous electrolyte battery, an electrical double layer capacitor, a lithium ion capacitor, or an electrical storage device, and to confirm the performance of the conductive resin layer easily with high accuracy by a non-destructive test. A current collector includes a conductive substrate and a resin layer possessing conductivity, the resin layer being formed on at least one side of the conductive substrate. The resin layer possessing conductivity contains a resin and a conductive material containing carbon as a main component. When the color tone of the surface of the resin layer possessing conductivity is specified with L*a*b* color system, L* is 60 or lower, a* is ?1.0 to 1.0, and b* is ?1.0 to 3.0.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: May 23, 2017
    Assignees: UACJ Corporation, UACJ Foil Corporation
    Inventors: Osamu Kato, Sohei Saito, Yukiou Honkawa, Mitsuyuki Wasamoto, Kenichi Kadowaki, Satoshi Yamabe
  • Patent number: 9643283
    Abstract: An aluminum alloy brazing sheet achieves a stable brazability equal to by brazing using a flux, even if an etching treatment is not performed on the brazing site. The aluminum alloy brazing sheet is used to braze aluminum in an inert gas atmosphere without using a flux and includes a core material and a filler metal, one side or each side of the core material being clad with the filler metal, the core material being formed of an aluminum alloy that includes 0.2 to 1.3 mass % of Mg, the filler metal including 6 to 13 mass % of Si and 0.004 to 0.1 mass % of Li, with the balance being aluminum and unavoidable impurities, a surface oxide film having been removed from the brazing sheet, and an oil solution that decomposes when heated at 380° C. or less in an inert gas having been applied to the brazing sheet.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: May 9, 2017
    Assignee: UACJ CORPORATION
    Inventors: Yasunaga Itoh, Tomoki Yamayoshi
  • Publication number: 20170113305
    Abstract: This cladded aluminum-alloy material is provided with: an aluminum alloy core material, a coating material used to clad both surfaces of the core material; and a brazing material used to clad both of the coating material surfaces, or one of the coating material surfaces which is not at the core material side. The core material, the coating material and brazing filler material have described alloy compositions. The crystal grain size of the coating material before brazing heating is at least 60 ?m. In a cross section of the core material in the rolling direction before brazing heating, when R1 (?m) represents the crystal grain size in the plate thickness direction, and R2 (?m) represents the crystal grain size in the rolling direction, R1/R2 is not more than 0.50. As a result, the cladded aluminum-alloy material exhibits excellent mouldability, and the coating material after brazing heating exhibits excellent corrosion resistance.
    Type: Application
    Filed: March 11, 2015
    Publication date: April 27, 2017
    Applicant: UACJ Corporation
    Inventors: Makoto ANDO, Akio NIIKURA
  • Patent number: 9631878
    Abstract: Provided is an aluminum alloy tube with superior corrosion resistance and a joining layer for brazing. In addition, a heat exchanger using a fin which utilizes a bare material of low cost and higher availability, rather than a clad material, is provided. A manufacturing method of an aluminum alloy tube, including the steps of forming a sacrificial anticorrosion layer comprising Zn, by ark spraying Zn with purity of 95% or more, onto a surface of aluminum alloy tube with a spraying amount of 3 to 10 g/m2 and a spraying speed of 150×103 to 350×103 mm/sec; and forming a joining layer for brazing by applying a joining material for brazing comprising a mixture obtained by mixing Si powder with purity of 95% or more and flux, onto a surface of the sacrificial anticorrosion layer, so that the amount of the Si powder is 1.2 to 3.0 g/m2, is provided.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: April 25, 2017
    Assignee: UACJ Corporation
    Inventor: Kensuke Mori
  • Publication number: 20170107600
    Abstract: The present invention provides: a compressor impeller that cast from an aluminum alloy, has superior production characteristics, and exhibits stable high-temperature strength when used at temperatures around 200° C.; and a method for producing same. The compressor impeller that is cast from an Al alloy is provided with a boss section, a plurality of vane sections and a disc section; the boss section, the plurality of vane sections and the disc section excluding the end section comprise an Al alloy comprising a predetermined metal composition; and at the end section of the disc section, there are at least 10,000/mm2 of intermetallic compounds having a circle-equivalent diameter of 1-6 ?m, and there are no greater than 500/mm2 of intermetallic compounds having a circle-equivalent diameter exceeding 6 ?m.
    Type: Application
    Filed: March 11, 2015
    Publication date: April 20, 2017
    Applicants: UACJ Corporation, UACJ Foundry & Forging Corporation
    Inventors: Takashi KUBO, Koichi TAKAHASHI, Toshio USHIYAMA, Nobuhito ISHIKAWA
  • Patent number: 9613648
    Abstract: An aluminum alloy plate for a magnetic disk substrate with a flat and smooth ground surface, a production method by which the aluminum alloy plate can be produced at low cost and a magnetic disk are shown. An aluminum alloy plate for a magnetic disk substrate which comprises an aluminum alloy containing Mg: 3.0 to 8.0 mass % (hereinafter %), Cu: 0.005 to 0.150%, Zn: 0.05 to 0.60%, Cr: 0.010 to 0.300%, Fe: 0.001 to 0.030%, Si: 0.001 to 0.030%, (Ti+V+Zr): 0.0010 to 0.0100%, B: 0.0001 to 0.0010% with a balance being Al and inevitable impurities, wherein the density of a Ti—V—B—Zr-based inclusion having a maximum diameter exceeding 5 ?m is 0 piece/6000 mm2 and the density of a Ti—V—B—Zr-based inclusion having a maximum diameter of 3 to 5 ?m is 1 piece/6000 mm2 or less; a production method thereof; and a method for producing a magnetic disk.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: April 4, 2017
    Assignee: UACJ Corporation
    Inventors: Kotaro Kitawaki, Minoru Hayashi, Yoshiji Hashimoto, Toshikazu Hisamoto
  • Publication number: 20170080528
    Abstract: A clad aluminum alloy material exhibiting favorable corrosion resistance and brazeability in an alkaline environment is shown by a clad aluminum alloy material with excellent brazeability and corrosion resistance in which one surface of an aluminum alloy core material is clad with a sacrificial anode material and the other surface is clad with brazing filler material. The core material includes an aluminum alloy of Si: 0.3-1.5%, Fe: 0.1-1.5%, Cu: 0.2-1.0%, Mn: 1.0-2.0%, and Si content+Fe content ?0.8%, wherein the 1-20 ?m equivalent circle diameter Al—Mn—Si—Fe-based intermetallic compound density is 3.0×105 to 1.0×106 pieces/cm2, and the 0.1?m to less than 1?m equivalent circle diameter Al—Mn—Si—Fe-based intermetallic compound density is at least 1.0×107pieces/cm2. The sacrificial anode material includes an aluminum alloy containing Si: 0.1-0.6%, Zn: 1.0-5.0%, and Ni: 0.1-2.0%.
    Type: Application
    Filed: March 11, 2015
    Publication date: March 23, 2017
    Applicant: UACJ Corporation
    Inventor: Wataru NARITA
  • Patent number: 9574253
    Abstract: An aluminum alloy material contains Si: 1.0 mass % to 5.0 mass % and Fe: 0.01 mass % to 2.0 mass % with balance being Al and inevitable impurities, wherein 250 pcs/mm2 or more to 7×105 pcs/mm2 or less of Si-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 ?m are present in a cross-section of the aluminum alloy material, while 100 pcs/mm2 to 7×105 pcs/mm2 of Al-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 ?m are present in a cross-section of the aluminum alloy material. An aluminum alloy structure is manufactured by bonding two or more members in vacuum or a non-oxidizing atmosphere at temperature at which a ratio of a mass of a liquid phase generated in the aluminum alloy material to a total mass of the aluminum alloy material is 5% or more and 35% or less.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: February 21, 2017
    Assignee: UACJ Corporation
    Inventors: Akio Niikura, Kazuko Fujita, Takashi Murase, Yoshiyuki Oya, Tomohito Kurosaki