Patents Assigned to UACJ CORPORATION
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Patent number: 11298779Abstract: 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: GrantFiled: November 6, 2018Date of Patent: April 12, 2022Assignee: UACJ CORPORATIONInventor: Yasunaga Itoh
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Patent number: 11270730Abstract: 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: GrantFiled: November 28, 2018Date of Patent: March 8, 2022Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.Inventors: Takuya Murata, Kotaro Kitawaki, Makoto Yonemitsu, Yasuo Fujii, Ryo Sakamoto, Hideyuki Hatakeyama, Sadayuki Toda
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Patent number: 11260476Abstract: 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: GrantFiled: December 1, 2017Date of Patent: March 1, 2022Assignee: UACJ CORPORATIONInventors: Tatsuya Ide, Tomohiro Shoji, Dai Yamamoto
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Patent number: 11255001Abstract: 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: GrantFiled: March 9, 2017Date of Patent: February 22, 2022Assignee: UACJ CORPORATIONInventors: Yuichi Tanaka, Tetsuya Motoi
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Patent number: 11254271Abstract: 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: GrantFiled: May 31, 2019Date of Patent: February 22, 2022Assignees: UACJ CORPORATION, HONDA MOTOR CO., LTD.Inventors: Tomoya Yokota, Tatsuo Inagaki, Keiichiro Tsuji, Ryo Kita, Tomohide Sekiguchi, Naoki Takaki
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Patent number: 11255618Abstract: 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: GrantFiled: December 18, 2019Date of Patent: February 22, 2022Assignees: UACJ CORPORATION, UACJ EXTRUSION CORPORATION, DENSO CORPORATIONInventors: Shinichi Nakamura, Naoki Yamashita, Seiichi Nagao, Satoshi Shibata, Kazuhisa Naitou, Takeshi Okinotani, Susumu Ichikawa, Akira Itoh
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Publication number: 20220040803Abstract: 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: ApplicationFiled: April 3, 2020Publication date: February 10, 2022Applicant: UACJ CorporationInventors: Tomoki Yamayoshi, Taichi Suzuki, Hirokazu Tanaka
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Patent number: 11235428Abstract: 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: GrantFiled: March 5, 2019Date of Patent: February 1, 2022Assignee: UACJ CORPORATIONInventors: Tatsuya Ide, Yutaka Yanagawa, Shogo Yamada, Takahiro Shinoda, Shingo Ono
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Patent number: 11230785Abstract: 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: GrantFiled: February 19, 2018Date of Patent: January 25, 2022Assignee: UACJ CorporationInventors: Tatsuhiro Yaegashi, Tatsuya Mimura, Takahiro Koyama
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Patent number: 11225725Abstract: 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: GrantFiled: July 9, 2019Date of Patent: January 18, 2022Assignee: UACJ CORPORATIONInventors: Junji Nunomura, Yukio Honkawa, Yoichi Kojima, Mikito Ueda
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Patent number: 11220728Abstract: An aluminum alloy pipe-shaped hollow material is produced by porthole extrusion. The aluminum alloy pipe-shaped hollow material includes an Al—Mg-based alloy containing Mg of 0.7 mass % or more and less than 2.5 mass %, and Ti of more than 0 mass % and 0.15 mass % or less, with the balance being Al and unavoidable impurities. A work hardening coefficient n-value is 0.25 or more and less than 0.43. The aluminum alloy pipe-shaped hollow material has an inner-surface ridged structure inside thereof, and an area ratio of the inner-surface ridged structure in a cross-section orthogonal to an extending direction of the aluminum alloy pipe-shaped hollow material is 1 to 30%. The present invention can provide an aluminum alloy pipe-shaped hollow material that is an aluminum alloy pipe-shaped hollow material of a 5000 series aluminum alloy produced by porthole extrusion and has excellent bending processability.Type: GrantFiled: May 28, 2018Date of Patent: January 11, 2022Assignees: UACJ CORPORATION, UACJ EXTRUSION CORPORATIONInventors: Taichi Suzuki, Naoki Yamashita
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Publication number: 20220002892Abstract: A method for producing an aluminum material, including: providing an electrolytic cell in which an anode electrode containing 0.01 to 30% by mass Si and Al and a cathode electrode are immersed in an electrolytic solution and depositing aluminum on the cathode electrode by energizing the anode electrode and the cathode electrode in the electrolytic solution.Type: ApplicationFiled: September 21, 2021Publication date: January 6, 2022Applicant: UACJ CORPORATIONInventors: Junji NUNOMURA, Yukio HONKAWA, Yoichi KOJIMA, Tetsuya TSUDA
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Patent number: 11208710Abstract: Provided are: an aluminum alloy substrate for a magnetic disk, including an aluminum alloy including 0.4 to 3.0 mass % of Fe with the balance of Al and unavoidable impurities; a method for producing the aluminum alloy substrate for a magnetic disk; and a magnetic disk in which an electroless Ni—P plating treatment layer and a magnetic layer formed thereon are disposed on a surface of the aluminum alloy substrate for a magnetic disk.Type: GrantFiled: February 9, 2018Date of Patent: December 28, 2021Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.Inventors: Kotaro Kitawaki, Takuya Murata, Makoto Yonemitsu, Kouichiro Takiguchi, Takashi Nakayama, Kimie Imakawa, Yasuo Fujii, Hideyuki Hatakeyama
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Patent number: 11211088Abstract: Provided are a magnetic disk and a method of fabricating the magnetic disk. The magnetic disk includes an aluminum alloy plate fabricated by a process involving a CC method and a compound removal process, and an electroless Ni—P plating layer disposed on the surface of the plate. The aluminum alloy plate is composed of an aluminum alloy containing 0.4 to 3.0 mass % (hereinafter abbreviated simply as “%”) of Fe, 0.1% to 3.0% of Mn, 0.005% to 1.000% of Cu, 0.005% to 1.000% of Zn, with a balance of Al and unavoidable impurities. In the magnetic disk, the maximum amplitude of waviness in a wavelength range of 0.4 to 5.0 mm is 5 nm or less, and the maximum amplitude of waviness in a wavelength range of 0.08 to 0.45 mm is 1.5 nm or less.Type: GrantFiled: November 28, 2018Date of Patent: December 28, 2021Assignees: UACJ CORPORATION, FURUKAWA ELECTRIC CO., LTD.Inventors: Takuya Murata, Kotaro Kitawaki, Makoto Yonemitsu, Hideyuki Hatakeyama, Takashi Nakayama, Ryo Sakamoto, Hiroki Ota
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Publication number: 20210394312Abstract: An aluminum alloy brazing sheet used for brazing of an aluminum material in an inert gas atmosphere or in vacuum is formed of a two-layer material in which a brazing material and a core material are stacked. The core material is formed of an aluminum alloy and has a grain size of 20 to 300 ?m, and the aluminum alloy contains Mn of 0.50 to 2.00 mass %, Mg of 0.40 to 2.00 mass %. Si of 1.50 mass % or less, Fe of 1.00 mass % or less, and Ti of 0.10 to 0.30 mass %, with the balance being aluminum and inevitable impurities. The brazing material is formed of an aluminum alloy containing Si of 4.00 to 13.00 mass % with the balance being aluminum and inevitable impurities. In a drop-type fluidity test, a ratio ? (?=Ka/Kb) of a fluid coefficient Ka is 0.50 or more.Type: ApplicationFiled: October 25, 2019Publication date: December 23, 2021Applicant: UACJ CorporationInventors: Tomoki Yamayoshi, Hidetoshi Kumagai, Hirokazu Tanaka, Taketoshi Toyama, Naoki Sugimoto, Nobuhiro Honma, Shogo Yamada
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Publication number: 20210394313Abstract: An aluminum alloy brazing sheet formed of a brazing material, an intermediate material, a core material, and a brazing material. The intermediate material contains Mg of 0.40 to 6.00 mass % and Zn exceeding 2.00 mass % and equal to or less than 8.00 mass %. The core material contains Mg of 0.40 to 2.00 mass % and one or two or more of Mn of 1.80 mass % or less, Si of 1.50 mass % or less, Fe of 1.00 mass % or less, Cu of 1.20 mass % or less, Ti of 0.30 mass % or less, Zr of 0.30 mass % or less, and Cr of 0.30 mass % or less. Each of the core material and the intermediate material has a grain size of 20 to 300 ?m, and each of the brazing materials comprises Si of 4.00 to 13.00 mass %.Type: ApplicationFiled: October 25, 2019Publication date: December 23, 2021Applicant: UACJ CorporationInventors: Tomoki Yamayoshi, Hidetoshi Kumagai, Hirokazu Tanaka
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Publication number: 20210379705Abstract: An aluminum alloy brazing sheet is formed of a brazing material, an intermediate material, a core material, and a brazing material. The intermediate material contains Mg of 0.40 to 6.00 mass %, and has total of contents of Mn, Cr, and Zr being 0.10 mass % or more. The core material contains Mg of 0.20 to 2.00 mass % and one or two or more of Mn of 1.80 mass % or less, Si of 1.50 mass % or less, Fe of 1.00 mass % or less, Cu of 1.20 mass % or less, Ti of 0.30 mass % or less, Zr of 0.30 mass % or less, and Cr of 0.30 mass % or less. Each of the core material and the intermediate material has a grain size of 20 to 300 ?m, and each of the brazing materials contain Si of 4.00 to 13.00 mass %.Type: ApplicationFiled: October 25, 2019Publication date: December 9, 2021Applicant: UACJ CorporationInventors: Tomoki Yamayoshi, Hidetoshi Kumagai, Hirokazu Tanaka
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Publication number: 20210371960Abstract: An aluminum alloy thick plate is formed of an aluminum alloy including Mg of 2.0 to 5.0 mass %, and has a plate thickness of 300 to 400 mm. A is 700 pieces/cm2 or less and B is 1.3 times or more as large as A, where (i) A (pieces/cm2) is a maximum value in numbers of crystallized products with a maximum length of 60 ?m or more per unit area in each of positions located at a center portion in a thickness direction and at positions of 0.39 Wa to 0.48 Wa in a plate width direction; and (ii) B (pieces/cm2) is a maximum value in numbers of crystallized products with a maximum length of 60 ?m or more per unit area in each of positions located at the center portion in the thickness direction and at positions of 0.12 Wa to 0.30 Wa in the plate width direction.Type: ApplicationFiled: August 13, 2021Publication date: December 2, 2021Applicant: UACJ CorporationInventors: Takashi Kubo, Tatsuya Yamada
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Publication number: 20210354250Abstract: An aluminum alloy brazing sheet used for brazing of an aluminum material in an inert gas atmosphere or in vacuum is formed of a two-layer material in which a brazing material and a core material are stacked in this order. The core material is formed of an aluminum alloy and has a grain size of 20 to 300 ?m, and the aluminum alloy contains Mn of 0.50 to 2.00 mass %, Mg of 0.40 to 2.00 mass %, Si of 1.50 mass % or less, and Fe of 1.00 mass % or less, with the balance being aluminum and inevitable impurities. The brazing material is formed of an aluminum alloy containing Si of 4.00 to 13.00 mass % with the balance being aluminum and inevitable impurities, and, in a drop-type fluidity test, a ratio ? (?=Ka/Kb) of a fluid coefficient Ka is 0.50 or more.Type: ApplicationFiled: October 25, 2019Publication date: November 18, 2021Applicant: UACJ CorporationInventors: Tomoki Yamayoshi, Hidetoshi Kumagai, Hirokazu Tanaka
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Publication number: 20210348293Abstract: Provided is an aluminum member including a base material containing aluminum or an aluminum alloy and an anodic oxide film having a barrier layer on the surface of the base material and a porous layer on the barrier layer, in which the anodic oxide film has a thickness of 100 ?m or less, the porous layer contains S and P, the concentration of S, CS, and the concentration of P, CP, in the porous layer, measured by X-ray photoelectron spectroscopy, satisfy CS>CP over the depth direction from the surface of the anodic oxide film toward the base material.Type: ApplicationFiled: July 21, 2021Publication date: November 11, 2021Applicant: UACJ CORPORATIONInventor: Junji NUNOMURA