Patents Assigned to UACJ CORPORATION
  • Patent number: 11404082
    Abstract: Provided is an aluminium alloy substrate for a magnetic disk, a method for fabricating the substrate, and a magnetic disk composed of the aluminium alloy substrate for a magnetic disk. The substrate contains an aluminium alloy composed of one or more elements selected from a group comprising 0.05 to 3.00 mass % (hereinafter abbreviated as “%”) of Fe, 0.05% to 3.00% of Mn, 0.05% to 18.00% of Si, 0.05% to 8.00% of Ni, 0.05% to 3.00% of Cr, and 0.05% to 3.00% of Zr, with a balance of Al and unavoidable impurities. The substrate has a Young modulus of 67 GPa or more in each of the 0° direction, 45° direction, and 90° direction relative to the rolling direction of the substrate.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: August 2, 2022
    Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kotaro Kitawaki, Makoto Yonemitsu, Takashi Nakayama, Kimie Imakawa, Hideyuki Hatakeyama
  • Patent number: 11401091
    Abstract: A coated aluminum sheet includes an aluminum alloy sheet including a first surface and a second surface situated opposite to the first surface and first and second coating films formed on the first and second surfaces, respectively. The first and second coating films each have a mass of 0.1 to 20 g/m2 per unit area. The first coating film includes 0.1 to 1.5% by mass of a polyethylene wax and 0.1 to 1.5% by mass of a carnauba wax. The second coating film includes 0.4 to 0.8% by mass of a polyethylene wax and 0.4 to 0.8% by mass of a carnauba wax. Respective contents of another wax in the first and second coating films are 1.5% by mass or less and 0.7% by mass or less respectively. Post-lubrication including a petrolatum wax on the second coating film is 10 mg/m2 or less in amount.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: August 2, 2022
    Assignee: UACJ CORPORATION
    Inventor: Ichio Takeda
  • Publication number: 20220220588
    Abstract: Shown is a superplastic-forming aluminum alloy plate and a production method therefor, the superplastic-forming aluminum alloy plate being characterized by comprising an aluminum alloy which contains 2.0 to 6.0 mass % Mg, 1.2 to 1.5 mass % Mn and 0.001 to 0.05 mass % Cr and in which the balance consists of Al and unavoidable impurities, wherein the unavoidable impurities are restricted to have 0.20 mass % or less Fe and 0.20 mass % or less Si, the 0.2% proof stress is 340 MPa or more, and the density of intermetallic compounds having an equivalent circular diameter of 5 to 15 ?m at the RD-TD plane which extends along the center of the plate cross-section is 50 to 400 pieces/mm2, and a frequency of Kernel Average Misorientation of 15° or less at the RD-TD plane which extends along the center of the plate cross-section is 0.34 or less.
    Type: Application
    Filed: March 28, 2022
    Publication date: July 14, 2022
    Applicant: UACJ CORPORATION
    Inventors: Tomoyuki KUDO, Yoshifumi SHINZATO, Ryo KURAMOTO
  • Patent number: 11370067
    Abstract: An aluminum alloy brazing sheet includes a four-layer material containing an intermediate layer formed of an aluminum alloy including Mn of from 0.2 to less than 0.35 mass %, Si of 0.6 mass % or less, Fe of 0.7 mass % or less, and Cu of 0.1 mass % or less, with the balance being Al and inevitable impurities, a core material formed of an aluminum alloy including Si of 1.2 mass % or less, Fe of 1.0 mass % or less, Cu of from 0.3 to 1.0 mass %, and Mn of from 0.5 to 2.0 mass %, with the balance being Al and inevitable impurities, and each of an air-side brazing material layer and an internal brazing material layer is formed of an aluminum alloy including Si of from 4 to 13 mass %, with the balance being Al and inevitable impurities.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: June 28, 2022
    Assignee: UACJ CORPORATION
    Inventors: Yukie Kitada, Naoki Yamashita
  • Publication number: 20220184750
    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.
    Type: Application
    Filed: April 3, 2020
    Publication date: June 16, 2022
    Applicant: UACJ Corporation
    Inventors: Tomoki Yamayoshi, Taichi Suzuki, Hirokazu Tanaka
  • Patent number: 11358406
    Abstract: The present invention provides a coating material that can improve gravure printing characteristics of the printing surface of a printing substrate to favorably transfer an ink fed in the cell of a gravure printing roll to the printing surface of the printing substrate, thereby achieving the beautiful gravure printing. The coating material of the present invention is a coating material for forming a surface layer serving as a printing surface on a printing substrate to which gravure printing is to be applied, and the coating material is characterized by including a pigment including an inorganic particulate and a skin layer that is formed on a surface of the inorganic particulate and includes an organic compound.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: June 14, 2022
    Assignee: UACJ CORPORATION
    Inventors: Hiroshi Nishio, Osamu Katoh, Yukie Kitada
  • Patent number: 11361791
    Abstract: An aluminum alloy sheet for a magnetic disk includes an aluminum alloy comprising 0.10 to 3.00 mass % (hereafter simply “%”) of Fe, 0.1 to 3.0% of Mn, 0.003 to 1.000% of Cu, and 0.005 to 1.000 s % of Zn, wherein second phase particles having a maximum diameter of 100 ?m or more and 300 ?m or less are dispersed at a distribution density of 50 particles/mm2 or less in a region (A) occupying 25% or less of a sheet thickness from a sheet thickness center plane to opposite surfaces of the sheet, second phase particles having a maximum diameter of 100 ?m or more and 300 ?m or less are 0 particles/mm2 in a region (C) that is obtained by excluding the region (A) from a region (B) occupying 50% or less of the sheet thickness from the sheet thickness center plane to the opposite surfaces of the sheet, and the amount of Mn solid solution is 0.03 mass % or more.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: June 14, 2022
    Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kotaro Kitawaki, Makoto Yonemitsu, Hideyuki Hatakeyama, Sadayuki Toda, Ryo Sakamoto, Yasuo Fujii
  • Patent number: 11341995
    Abstract: An aluminum alloy sheet for a magnetic disk, a method for manufacturing same, and a magnetic disk using same. The aluminum alloy sheet is made of an aluminum alloy comprising 0.10 to 3.00 mass % of Fe, 0.003 to 1.000 mass % of Cu, and 0.005 to 1.000 mass % of Zn, with a balance of Al and unavoidable impurities, wherein a value obtained by dividing a difference in an area ratio (%) of second phase particles between a region (A) and a region (B) by an average value of area ratios (%) of second phase particles in the regions (A) and (B) is 0.05 or less, the region (A) being a region from a sheet thickness center plane to a front surface of the sheet, and the region (B) being a region from the sheet thickness center plane to a rear surface of the plate.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: May 24, 2022
    Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO.. LTD.
    Inventors: Kotaro Kitawaki, Yu Igarashi, Keisuke Kamiya, Yu Matsui, Makoto Yonemitsu, Ryo Sakamoto, Hideyuki Hatakeyama, Hiroki Ota
  • Patent number: 11335367
    Abstract: An aluminum alloy substrate (1) for magnetic disk satisfies at least two of three inequalities of an inequality group [A] and satisfies all of four inequalities of an inequality group [B], or satisfies at least two of the three inequalities of the inequality group [A] and satisfies all of four inequalities of an inequality group [C], when a plate thickness of the disk at a position (b1) is defined as tb1, a plate thickness at a position (b2) is defined as tb2, a plate thickness at a position (b3) is defined as tb3, a plate thickness at a position (a1) is defined as ta1, a plate thickness at a position (a2) is defined as ta2, and a plate thickness at a position (a3) is defined as ta3.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: May 17, 2022
    Assignees: FURUKAWA ELECTRIC CO., LTD., UACJ CORPORATION
    Inventors: Kimie Imakawa, Toshihiro Nakamura, Hideki Takahashi, Keita Yoshimura, Wataru Kumagai, Naoki Kitamura, Kotaro Kitawaki
  • Patent number: 11320217
    Abstract: A method for manufacturing a heat exchanger (1) includes joining an inner fin (3) to a hollow structure (20) formed from at least two clad plates (200a, 200b) by heating and brazing a filler metal layer (B). Each clad plate has a core layer (A) composed of an aluminum alloy that contains Mg: 0.40-1.0 mass %. The filler metal layer is composed of an aluminum alloy that contains Si: 4.0-13.0 mass %, and further contains Li: 0.0040-0.10 mass %, Be: 0.0040-0.10 mass %, and/or Bi: 0.01-0.30 mass %. The inner fin is composed of an aluminum alloy that contains Si: 0.30-0.70 mass % and Mg: 0.35-0.80 mass %. A flux (F) that contains cesium (Cs) is applied along a contact part (201), and the vicinity thereof, of the at least two clad plates prior to the heating. A heat exchanger (1) may be manufactured according to this method.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: May 3, 2022
    Assignee: UACJ CORPORATION
    Inventors: Yutaka Yanagawa, Norihisa Isomura, Yuki Totani, Yasuhiro Yagita, Tetsuro Hata
  • Patent number: 11298779
    Abstract: A brazing sheet brazing suitable for brazing performed in an inert gas atmosphere or in a vacuum without using a flux has a three-layer composition. An aluminum alloy core material contains Mg: 1.3 mass % or less. An aluminum alloy intermediate material is layered on the core material and contains Mg: 0.40-6.0 mass %. An aluminum alloy filler material is layered on the intermediate material and contains Si: 6.0-13.0 mass %, Bi: 0.0040-0.070 mass %, and Mg: 0.050-0.10 mass %.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: April 12, 2022
    Assignee: UACJ CORPORATION
    Inventor: Yasunaga Itoh
  • Patent number: 11270730
    Abstract: A magnetic disk substrate is composed of an aluminum alloy substrate, a base plating layer on a surface of the aluminum alloy substrate, and a boundary region between the aluminum alloy substrate and the base plating layer. The boundary region includes a specific boundary region (D(1)I(50-84)) having Al emission intensities equal to 50% to 84% of an average Al emission intensity in an interior region of the aluminum alloy substrate in glow discharge optical emission spectroscopy in the depthwise direction from the surface of the magnetic disk substrate. The specific boundary region (D(1)I(50-84)) has a maximum Fe emission intensity (I(1)Fe(max)) higher than an average Fe emission intensity (I(1)Fe(ave)) in the interior region of the aluminum alloy substrate in the glow discharge optical emission spectroscopy.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: March 8, 2022
    Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Takuya Murata, Kotaro Kitawaki, Makoto Yonemitsu, Yasuo Fujii, Ryo Sakamoto, Hideyuki Hatakeyama, Sadayuki Toda
  • Patent number: 11260476
    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 ?m or more and 1.0 ?m or less is 1×103/mm2 or more and 1×106/mm2 or less.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: March 1, 2022
    Assignee: UACJ CORPORATION
    Inventors: Tatsuya Ide, Tomohiro Shoji, Dai Yamamoto
  • Patent number: 11255618
    Abstract: In this flat extruded aluminum multi-port tube, the corrosion-resistance, at inner surfaces of a plurality of flow passages independently and parallelly extending in the tube axial direction, is effectively enhanced. In a flat extruded aluminum multi-port tube 10 formed by an extrusion by employing an aluminum tube material and an aluminum sacrificial anode material having an electrochemically lower potential than the aluminum tube material, the aluminum sacrificial anode material is exposed to form a sacrificial anode portion 18 at least in a part of an inner circumferential portion in each of the plurality of flow passages 12.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: February 22, 2022
    Assignees: UACJ CORPORATION, UACJ EXTRUSION CORPORATION, DENSO CORPORATION
    Inventors: Shinichi Nakamura, Naoki Yamashita, Seiichi Nagao, Satoshi Shibata, Kazuhisa Naitou, Takeshi Okinotani, Susumu Ichikawa, Akira Itoh
  • Patent number: 11255001
    Abstract: An aluminum-alloy foil that enables to satisfy both of high elongation and high strength even in the case of reducing the foil thickness. The chemical composition of the aluminum-alloy foil contains, in mass %, Fe: 1.0% or more and 2.0% or less, Cu: 0.1% or more and 0.5% or less, and Mn: 0.05% or less, the remainder being Al and unavoidable impurities. The aluminum-alloy foil has a foil thickness of 20 ?m or less, and satisfies the relation El?100×t/UTS. Here, t represents a foil thickness (?m), UTS represents a tensile strength (MPa), and El represents an elongation (%).
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: February 22, 2022
    Assignee: UACJ CORPORATION
    Inventors: Yuichi Tanaka, Tetsuya Motoi
  • Patent number: 11254271
    Abstract: A shock absorbing member of the present disclosure is a shock absorbing member including a first hollow member (11) and a second hollow member (12) that are made of aluminum alloy and are weld joined to each other, in which a weld material and weld beads (W) do not project from a side on which a joined surface between the first hollow member (11) and the second hollow member (12) is located.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: February 22, 2022
    Assignees: UACJ CORPORATION, HONDA MOTOR CO., LTD.
    Inventors: Tomoya Yokota, Tatsuo Inagaki, Keiichiro Tsuji, Ryo Kita, Tomohide Sekiguchi, Naoki Takaki
  • Publication number: 20220040803
    Abstract: An aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using a flux includes an intermediate material and a brazing material cladded onto at least one side surface of a core material in this order from the core material side. 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 0.5 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.
    Type: Application
    Filed: April 3, 2020
    Publication date: February 10, 2022
    Applicant: UACJ Corporation
    Inventors: Tomoki Yamayoshi, Taichi Suzuki, Hirokazu Tanaka
  • Patent number: 11235428
    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.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: February 1, 2022
    Assignee: UACJ CORPORATION
    Inventors: Tatsuya Ide, Yutaka Yanagawa, Shogo Yamada, Takahiro Shinoda, Shingo Ono
  • Patent number: 11230785
    Abstract: There are provided: a surface-treated aluminum material including an aluminum base material and an alkali alternating current electrolytic oxide coating film formed on at least a part of a surface of the aluminum base material, wherein the alkali alternating current electrolytic oxide coating film includes a porous-type aluminum oxide coating film layer formed on a surface side and a barrier-type aluminum oxide coating film layer formed on a base material side, and plural working grooves perpendicular to the direction of plastic working are formed; a method of producing the surface-treated aluminum material; a bonded body of the surface-treated aluminum material and a member to be bonded, including the surface-treated aluminum material and the member to be bonded, such as resin; and a method of producing the bonded body.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: January 25, 2022
    Assignee: UACJ Corporation
    Inventors: Tatsuhiro Yaegashi, Tatsuya Mimura, Takahiro Koyama
  • Patent number: 11225725
    Abstract: A method for producing aluminum includes: a dissolution step of dissolving a hydrate containing Al in water to prepare an aqueous solution that contains Al ions; an extraction step of bringing an organic phase that is composed of an extractant into contact with an aqueous phase that is composed of the aqueous solution to extract the Al ions in the aqueous phase into the organic phase; and an electrodeposition step of electrolyzing the organic phase as an electrolytic solution to electrodeposit metallic Al onto a surface of a cathode from the Al ions in the electrolytic solution.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: January 18, 2022
    Assignee: UACJ CORPORATION
    Inventors: Junji Nunomura, Yukio Honkawa, Yoichi Kojima, Mikito Ueda