Patents Assigned to UACJ CORPORATION
  • Publication number: 20190330752
    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: Application
    Filed: July 9, 2019
    Publication date: October 31, 2019
    Applicant: UACJ CORPORATION
    Inventors: Junji Nunomura, Yukio Honkawa, Yoichi Kojima, Mikito Ueda
  • Publication number: 20190323788
    Abstract: A method for producing an aluminum alloy clad material having a core material and a sacrificial anode material clad on at least one surface of the core material, wherein the core material comprises an aluminum alloy comprising 0.050 to 1.5 mass % (referred to as “%” below) Si, 0.050 to 2.0% Fe and 0.50 to 2.00% Mn; the sacrificial anode material includes an aluminum alloy containing 0.50 to 8.00% Zn, 0.05 to 1.50% Si and 0.050 to 2.00% Fe; the grain size of the sacrificial anode material is 60 ?m or more; and a ratio R1/R2 is 0.30 or less, wherein R1 (?m) is a grain size in a thickness direction and R2 (?m) is a grain size in a rolling direction in a cross section of the core material along the rolling direction; a production method thereof; and a heat exchanger using the clad.
    Type: Application
    Filed: July 1, 2019
    Publication date: October 24, 2019
    Applicant: UACJ CORPORATION
    Inventors: Makoto ANDO, Atsushi FUKUMOTO, Akio NIIKURA
  • Patent number: 10436528
    Abstract: An aluminum alloy brazing sheet which is thin but has excellent weldability and post-brazing strength. An aluminum alloy brazing sheet having a core material comprising an aluminum alloy, an Al—Si based brazing filler metal clad on one surface of the core material and a sacrificial anode material clad on the other surface of the core material: wherein the core material comprises certain amounts of Si, Fe, Cu and Mn and certain amounts of one, two or more selected from Ti, Zr, Cr and V; the sacrificial anode material comprises certain amounts of Si, Fe, Mg and Zn; in a cross section parallel to the longitudinal direction and along the thickness direction, the interface between the core material and the sacrificial anode material includes 300 pieces/mm or less of an Al—Mg—Cu based intermetallic compound; and the core material and the sacrificial anode material have an unrecrystallized structure.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: October 8, 2019
    Assignee: UACJ Corporation
    Inventors: Atsushi Fukumoto, Akio Niikura
  • Publication number: 20190292670
    Abstract: The method for producing an electrolytic aluminum foil of the present disclosure is a method for producing an electrolytic aluminum foil, the method including supplying an electrolytic solution in an electrolytic cell provided with a diaphragm between an anode and a cathode and depositing an aluminum foil on a surface of the cathode by electrolysis, wherein the diaphragm is made of aluminum having a purity of 85.0% or more and has a plurality of pores having an average pore diameter of 100 to 1000 ?m.
    Type: Application
    Filed: June 11, 2019
    Publication date: September 26, 2019
    Applicant: UACJ Corporation
    Inventors: Yukio Honkawa, Junji Nunomura, Yoichi Kojima
  • Patent number: 10418636
    Abstract: A current-collector metal foil has at least at least one roughened surface and numerous recessed parts are present on the roughened surface. Each recessed part has an edge part that surrounds a bottom-surface part and is raised above the bottom-surface part. The average Feret diameter Lave of the recessed parts is 0.5-50 ?m. The current-collector metal foil is suitable for use, e.g., as an electrode current collector for a lithium-ion secondary battery, a sodium secondary battery, an electric double-layer capacitor, or a lithium-ion capacitor.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: September 17, 2019
    Assignee: UACJ CORPORATION
    Inventors: Koichi Ashizawa, Tetsuya Motoi, Atsushi Koishikawa, Yasushi Funato
  • Patent number: 10415118
    Abstract: An aluminum alloy plate includes peritectic elements and Mg. Wherein plate thickness of the plate is represented as t (mm), a range within ±0.01×t from t/2 is represented as a central portion, a range within ±0.01×t from t/4 is represented as a quarter portion, and a range within 0.02×t from a top surface in the plate thickness direction is represented as a superficial portion, concentration of the peritectic elements is such that a concentration difference between in the central portion and in the quarter portion, and a concentration difference between in the central portion and in the superficial portion are 0.04% (mass %) or less. In addition, concentration of the Mg is such that a concentration difference between in the central portion and in the quarter portion, and a concentration difference between in the central portion and in the superficial portion of the plate thickness are 0.4% or less.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: September 17, 2019
    Assignee: UACJ Corporation
    Inventors: Yusuke Yamamoto, Mineo Asano
  • Publication number: 20190276945
    Abstract: The present disclosure provides a high-quality electrolytic aluminum foil which includes a smooth surface and an end portion containing no dendritic deposit, and a method for producing the same which can obtain the electrolytic aluminum foil at a high collection rate. An electrolytic aluminum foil of the present disclosure includes a surface having an arithmetic average height (Sa) of 0.15 ?m or less, wherein when, for a size of a crystal grain present in a cross-sectional surface, a first maximum dimension as measured in a thickness direction of the cross-sectional surface is x (?m), and a second maximum dimension as measured in a width direction of the cross-sectional surface is y (?m), x and y satisfy (x+y)/2?3 ?m and 1?x/y?4.
    Type: Application
    Filed: May 21, 2019
    Publication date: September 12, 2019
    Applicant: UACJ CORPORATION
    Inventors: Yukio Honkawa, Junji Nunomura, Yoichi Kojima, Koichi Ui
  • Patent number: 10408550
    Abstract: There is provided a heat exchanger and a fin material for the heat exchanger that can suppress occurrence of hollow corrosion in a fin and hold cooling performance for a long period of time under a high corrosion environment. The heat exchanger includes an aluminum tube through which a working fluid circulates and an aluminum fin which is bonded to the tube. The fin has a region B around a grain boundary, and a region A around the region B. In the region B, 5.0×104 pieces/mm2 less of Al—Fe—Mn—Si based intermetallic compound, each of which has equivalent circle diameters of 0.1 to 2.5 ?m, are present. In the region A, 5.0×104 pieces/mm2 to 1.0×107 pieces/mm2 of Al—Fe—Mn—Si based intermetallic compound, each of which has equivalent circle diameters of 0.1 to 2.5 ?m, are present.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: September 10, 2019
    Assignee: UACJ Corporation
    Inventors: Takashi Murase, Kotaro Kitawaki, Tomohito Kurosaki, Junji Ninomiya
  • Publication number: 20190233920
    Abstract: The present invention is an aluminum alloy for low-pressure casting, and the aluminum alloy is made of an Al—Si—Cu—Mg alloy and contains: 8.0 to 12.6 mass % of Si; 1.0 to 2.5 mass % of Cu; 0.3 to 0.8 mass % of Mg; and 0.2 mass % or less of Ti, wherein the aluminum alloy further contains X mass % of P, Y mass % of Na, and Z mass % of Sr, with the balance including Al and inevitable impurities, and wherein a content of P, a content of Na, and a content of Sr satisfy all of the following relationships: 0.45Y+0.24Z+0.003?X?0.45Y+0.24Z+0.01; 0?Y?0.01; and 0?Z?0.03. The present invention ensures surface smoothness of the casted article by specifying the P content. This minimizes a surface segregation layer even in production of a casted article using a molten metal containing a eutectic structure modifier such as Na.
    Type: Application
    Filed: October 30, 2017
    Publication date: August 1, 2019
    Applicants: UACJ CORPORATION, UACJ Foundry & Forging Corporation
    Inventors: Akihiro Minagawa, Toshio Ushiyama
  • Patent number: 10364485
    Abstract: An anodized aluminum alloy sheet exhibits excellent surface quality without showing a band-like streak pattern and is formed from a 5000 series aluminum alloy sheet that includes 1.0 to 6.0 mass % of Mg, wherein the concentration of Mg in a solid-solution state that is present in an outermost surface area of the aluminum alloy sheet varies in the widthwise direction of the aluminum alloy sheet in the form of a band having a width of 0.05 mm or more, and the difference in the concentration of Mg between adjacent bands is 0.20 mass % or less.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: July 30, 2019
    Assignee: UACJ CORPORATION
    Inventors: Mineo Asano, Yusuke Yamamoto
  • Patent number: 10367204
    Abstract: It is an object to provide an aluminum alloy foil for an electrode current collector, the foil having a high post-drying strength after application of an active material while keeping a high electrical conductivity. Disclosed is an aluminum alloy foil for an electrode current collector, comprising 0.03 to 0.1 mass % (hereinafter, “mass %” is simply referred to as “%”) of Fe, 0.01 to 0.1% of Si, and 0.0001 to 0.01% of Cu, with the rest consisting of Al and unavoidable impurities, wherein the aluminum alloy foil after final cold rolling has a tensile strength of 180 MPa or higher, a 0.2% yield strength of 160 MPa or higher, and an electrical conductivity of 60% IACS or higher; and the aluminum alloy foil has a tensile strength of 170 MPa or higher and a 0.2% yield strength of 150 MPa or higher even after the aluminum alloy foil is subjected to heat treatment at any of 120° C. for 24 hours, 140° C. for 3 hours, and 160° C. for 15 minutes.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: July 30, 2019
    Assignees: UACJ Corporation, UACJ Foil Corporation
    Inventors: Masakazu Seki, Satoshi Suzuki, Tomohiko Furutani, Kenji Yamamoto, Koichi Ashizawa
  • Publication number: 20190184501
    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.
    Type: Application
    Filed: August 24, 2017
    Publication date: June 20, 2019
    Applicant: UACJ Corporation
    Inventors: Atsushi Fukumoto, Yasunaga Itoh, Shoichi Sakoda, Tomoki Yamayoshi
  • Patent number: 10307870
    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: February 9, 2017
    Date of Patent: June 4, 2019
    Assignee: UACJ CORPORATION
    Inventors: Yasunaga Itoh, Tomoki Yamayoshi
  • Publication number: 20190161881
    Abstract: An aluminum member comprises a base material made of aluminum or art aluminum alloy, and an anodized coating provided on a surface of the base material and having a thickness of 100 ?m or less. The anodized coating comprises a barrier layer formed on the surface of the base material and having a thickness of 10 to 150 nm, and a porous layer formed on the barrier layer and having a thickness of 6 ?m or more. The porous layer comprises a first pore extending in a thickness direction of the porous layer from a boundary between the porous layer and the barrier layer, and a second pore connected to the first pore and extending so as to branch radially in the thickness direction of the porous layer toward a surface of the porous layer.
    Type: Application
    Filed: November 27, 2018
    Publication date: May 30, 2019
    Applicant: UACJ Corporation
    Inventor: Junji Nunomura
  • Publication number: 20190161830
    Abstract: The purpose of the present invention is to provide a copper pipe that is capable of exhibiting higher corrosion resistance with respect to formicary corrosion, can be suitably used in air conditioners and freezing equipment, and has excellent long-term anti-corrosion properties, and to advantageously improve the service life of equipment configured using such copper pipe. The copper pipe is configured from a material, which contains P (phosphorus) in a proportion of 0.15-0.50 weight %, in which oxygen content is 30 ppm by weight or less, and the balance is made of Cu and unavoidable impurities.
    Type: Application
    Filed: January 30, 2019
    Publication date: May 30, 2019
    Applicants: UACJ CORPORATION, UACJ COPPER TUBE CORPORATION
    Inventors: Masaki KUMAGAI, Yoshihiko KYO, Saori MAE
  • Patent number: 10302376
    Abstract: Provided is a corrosion resistant copper tube which can exhibit a further improved resistance to ant nest corrosion, and which is suitably usable as a heat transfer tube and refrigerant tube in air-conditioning equipment and refrigerating equipment. The copper tube is formed of a copper material comprising a copper alloy consisting of 0.15-0.50% by weight of phosphorus and the balance being copper and impurities, wherein the copper material includes phosphorus oxide particles, such that a number density of particles having a circle equivalent diameter of not less than 0.1 ?m among the phosphorus oxide particles is not more than 50000/mm2.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: May 28, 2019
    Assignees: UACJ CORPORATION, UACJ COPPER TUBE CORPORATION
    Inventors: Yoshihiko Kyo, Hirokazu Tamagawa, Yoshiyuki Oya
  • Patent number: 10300563
    Abstract: An aluminum alloy brazing sheet exhibits excellent brazability by effectively weakening an oxide film formed on the surface of a filler metal. The aluminum alloy brazing sheet includes a core material and a filler metal, and is used to braze aluminum in an inert gas atmosphere or in vacuum, the core material including aluminum or an aluminum alloy, the filler metal including 6 to 13 mass % of Si, with the balance being Al and unavoidable impurities, and one side or each side of the core material being clad with the filler metal, wherein the core material is clad with the filler metal in a state in which a sheet material is interposed between the core material and the filler metal, the sheet material including one element, or two or more elements, among 0.05 mass % or more of Li, 0.05 mass % or more of Be, 0.05 mass % or more of Ba, and 0.05 mass % or more of Ca, with the balance being Al and unavoidable impurities.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: May 28, 2019
    Assignee: UACJ CORPORATION
    Inventors: Yasunaga Itoh, Tomoki Yamayoshi
  • Publication number: 20190151973
    Abstract: An aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using flux is provided. In the aluminum alloy brazing sheet, a brazing material formed of aluminum alloy including Si of 6 mass % to 13 mass % with the balance being Al and inevitable impurities clads one side surface or both side surfaces of a core material formed of aluminum alloy including Mn of 0.8 mass % to 1.8 mass %, and Mg of 0.05 mass % to 0.20 mass % with the balance being Al and inevitable impurities, the brazing sheet has a thickness of 0.12 mm or smaller, and the brazing material has a thickness of 0.012 mm or smaller. This structure provides an aluminum alloy brazing sheet for fluxless brazing causing no defectiveness of buckling of distal end portions of fins or unsound formation of a fillet in brazing heating.
    Type: Application
    Filed: November 28, 2016
    Publication date: May 23, 2019
    Applicants: UACJ Corporation, DENSO CORPORATION
    Inventors: Yasunaga Itoh, Tomoki Yamayoshi, Shingo Oono, Tomohiro Shimazu, Shin Takewaka
  • Publication number: 20190119790
    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: Application
    Filed: March 9, 2017
    Publication date: April 25, 2019
    Applicant: UACJ CORPORATION
    Inventors: Yuichi TANAKA, Tetsuya MOTOI
  • Publication number: 20190112691
    Abstract: Provided are: an Al—Mg—Si-based aluminum alloy material including an aluminum alloy including 0.10 to 1.50 mass % (hereinafter, “%”) Si and 0.10 to 2.00% of Mg, in which an oxide coating film mainly containing aluminum is formed on a surface of the aluminum alloy material, a Mg—Si-based crystallized product having an equivalent circle diameter of 0.1 to 5.0 ?m is contained at 100 to 150,000 particles/mm2, a Mg—Si-based crystallized product having an equivalent circle diameter of more than 5.0 ?m and 10.0 ?m or less is contained at 5 particles/mm2 or less, and the oxide coating film includes Si at a maximum concentration of 0.1 to 40.0% and Mg at a maximum concentration of 0.1 to 20.0%; a method for producing the aluminum alloy material; and an aluminum alloy clad material, in which the aluminum alloy material is clad on at least one surface of an aluminum core material.
    Type: Application
    Filed: April 4, 2017
    Publication date: April 18, 2019
    Applicant: UACJ Corporation
    Inventors: Takatoshi SHIMADA, Kazuko TERAYAMA, Yoshiyuki OYA