Patents Assigned to Nippon Light Metal Company, Ltd.
  • Patent number: 11031257
    Abstract: To provide a method for manufacturing a power device cooler, which not only can accomplish cost reduction and preferable joining between the cooler and a heating element equipped with a power device but also can improve the productivity. After first and second cases and fins that constitute a cooler are brazed by means of a non-corrosive flux and a brazing filler material, the first and second cases and the fins being made of aluminum, flux residues that are attached at least to a heat receiving surface of the first and second cases that is to be joined to a heating element equipped with a power device, are removed by a wet blasting method in which a mixture of an abrasive formed of polygonal alumina particles having a median particle diameter of 4 to 250 ?m and a liquid is projected onto the heat receiving surface by compressed air.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: June 8, 2021
    Assignee: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Etsuro Kubota, Tomoyuki Hirayama, Yutaka Hirano
  • Publication number: 20210162531
    Abstract: The present invention includes: a preparation process configured to provide a first metal member including an end portion with a vertical face, and a second metal member including an end portion with an inclined face, a higher melting point and a smaller plate thickness than the first metal member; a butting process configured to butt the end portions of the first metal member and the second metal member against each other and form a butted portion with a V-shaped gap; and a joining process configured to join the first metal member and the second metal member together by inserting the rotating rotary tool from only a front face of the first metal member and relatively moving the rotary tool along the butted portion while only the stirring pin is in contact with at least the first metal member.
    Type: Application
    Filed: January 17, 2019
    Publication date: June 3, 2021
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventor: Hisashi HORI
  • Publication number: 20210146474
    Abstract: The method comprises a primary joining process in which primary joining is performed by friction stirring by moving a rotary tool (F) once around a recessed part (13) along a first overlap part (H1) in a state where only a stirring pin (F2) of the rotary tool provided with the stirring pin is inserted in the first overlap part (H1) from a front surface (3b) of a sealing body (3) and is in contact with a jacket body (2) and the sealing body (3). In the primary joining process, the rotary tool (F), which is provided with a flat surface (F4) orthogonal to a rotational axis of the stirring pin (F2) and a projection (F5) projecting from the flat surface (F4) at a tip part of the stirring pin (F2), is employed, and the first overlap part (H1) is joined by bringing the flat surface (F4) into contact with only the sealing body (3) and inserting a tip end of the projection (F5) more deeply than the first overlap part (H1).
    Type: Application
    Filed: November 16, 2017
    Publication date: May 20, 2021
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO
  • Publication number: 20210146473
    Abstract: Provided is a method for manufacturing a liquid-cooled jacket, to reduce the size of a recessed groove on a surface of a metal member and also to reduce roughness of an abutted surface. The method includes: a placing step of placing a jacket body and a sealing body, a first main joining step of performing friction stirring by moving a main joining rotary tool around along a first abutted portion, and a second main joining step of performing friction stirring by moving the main joining rotary tool around along a second abutted portion. The main joining rotary tool has a base-end-side pin and a tip-end-side pin. A taper angle of the base-end-side pin is grater than a taper angle of the tip-end-side pin and a stairs-like pin step portion is formed on an outer circumferential surface of the tip-end-side pin.
    Type: Application
    Filed: July 20, 2018
    Publication date: May 20, 2021
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Publication number: 20210146472
    Abstract: A first metal member (1) and a second metal member (2) are joined together using a rotary tool (F1D) comprising a base side pin (F3) and a tip side pin (F4), comprising an overlapping and abutting process of forming an overlapped portion (J1a), a top side abutted portion (J1b) and a back side abutted portion (J1c), and a friction stirring process of inserting the tip side pin (F4) that is rotating into the top side abutted portion (J1b) to join the top side abutted portion (J1b) and the overlapped portion (J1a) with a flat face (F5) vertical to a rotation axis of the rotary tool (F1D) being in contact with both the first metal member (1) and the second metal member (2) and with a tip face (f7) of a protruding portion (F6) protruding from the flat face (F5) being inserted deep over the overlapped portion (J1a).
    Type: Application
    Filed: January 25, 2018
    Publication date: May 20, 2021
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Kosuke YAMANAKA
  • Patent number: 10955740
    Abstract: The present invention provides; a pellicle frame which can effectively inhibit distortion of the photo mask (8) caused by mounting the pellicle (1), and which does not have a complex shape, and a pellicle which uses said pellicle frame are provided, and a manufacturing method of a blackened pellicle frame is also provided which can reduce the defect of the surface flickering under concentrated light and which facilitates inspection of the foreign matter adhesion prior to use. The present invention relates to a pellicle frame with an anodized film on a surface of an aluminum alloy frame, characterized in that: the aluminum alloy frame comprises an aluminum alloy which contains Ca: 5.0 to 10.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 23, 2021
    Assignees: NIPPON LIGHT METAL COMPANY, LTD., Mitsui Chemicals, Inc.
    Inventors: Yoshihiro Taguchi, Kazuo Kohmura, Daiki Taneichi
  • Patent number: 10948816
    Abstract: The present invention provides a pellicle frame which can effectively inhibit deformation of an exposure master plate (8) caused by affixing the pellicle (1), and which does not have a complex shape, and a pellicle which uses said pellicle frame are provided. The pellicle frame with an anodized film on a surface of an aluminum alloy frame is characterized in that: the aluminum alloy frame comprises an aluminum alloy which contains Ca: 5.0 to 10.0% by weight with the remainder aluminum and unavoidable impurities are contained, and has an area (volume) ratio of an Al4Ca phase, which is a dispersed phase, is greater than or equal to 25%, and a crystal structure of a part of the Al4Ca phase is monoclinic; wherein the anodized film contains Al4Ca particles.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 16, 2021
    Assignee: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Yoshihiro Taguchi, Takayuki Yamaguchi, Jun Yu, Yasuo Ishiwata
  • Publication number: 20210062302
    Abstract: Aluminum alloy sheet for battery lid use having suitable strength and excellent in formability and work softenability, which aluminum alloy sheet for battery lid use enabling formation of an integrated explosion-proof valve with little variation in operating pressure and excellent in cyclic fatigue resistance, and a method of production of the same are provided, the aluminum alloy sheet for battery lid use for forming an integrated explosion-proof valve having a component composition containing Fe: 1.05 to 1.50 mass %, Mn: 0.15 to 0.70 mass %, Ti: 0.002 to 0.15 mass %, and B: less than 0.04 mass %, having a balance of Al and impurities, having an Fe/Mn ratio restricted to 1.8 to 7.0, restricting, as impurities, Si to less than 0.40 mass %, Cu to less than 0.03 mass %, Mg to less than 0.05 mass %, and V to less than 0.
    Type: Application
    Filed: July 12, 2019
    Publication date: March 4, 2021
    Applicant: Nippon Light Metal Company, Ltd.
    Inventors: Yuuichi TAMAKI, Keiji KANAMORI, Daisuke SHIMOSAKA, Toshiya ANAMI
  • Publication number: 20210062316
    Abstract: Aluminum alloy sheet for battery lid use having suitable strength and excellent in formability and work softenability, which aluminum alloy sheet for battery lid use enabling formation of an integrated explosion-proof valve with little variation in operating pressure and excellent in cyclic fatigue resistance, and a method of production of the same are provided, the aluminum alloy sheet for battery lid use for forming an integrated explosion-proof valve having a component composition containing Fe: 1.05 to 1.50 mass %, Mn: 0.15 to 0.70 mass %, Ti: 0.002 to 0.15 mass %, and B: less than 0.03 mass %, having a balance of Al and impurities, having an Fe/Mn ratio restricted to 1.8 to 7.0, restricting, as impurities, Si to less than 0.40 mass %, Cu to less than 0.03 mass %, Mg to less than 0.05 mass %, and V to less than 0.
    Type: Application
    Filed: July 12, 2019
    Publication date: March 4, 2021
    Applicant: Nippon Light Metal Company, Ltd.
    Inventors: Yuuichi TAMAKI, Keiji KANAMORI, Daisuke SHIMOSAKA, Toshiya ANAMI
  • Publication number: 20210053144
    Abstract: A liquid cooling jacket is produced by forming a first butted portion where a step side face of a peripheral wall portion and an outer peripheral side face of a sealing body butt each other and a third butted portion where a step side face of a support pillar portion and a hole wall of the hole portion of the sealing body portion butt each other with a gap, and friction-stirring by inserting a tip side pin and a base side pin of a primary joining rotary tool that is rotating into the sealing body and moving the primary joining rotary tool along the third butted portion with an outer circumferential face of the tip side pin being kept off the step side face while having a second aluminum alloy of the sealing body flow into the gap.
    Type: Application
    Filed: September 27, 2018
    Publication date: February 25, 2021
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Patent number: 10920301
    Abstract: An aluminum alloy casting excellent in high temperature strength and thermal conductivity, a method of producing the same, and an aluminum alloy piston for internal combustion engine using this casting. An aluminum alloy casting having a chemical composition comprising Si: 12.0 to 13.5 mass % Cu: 4.5 to 5.5 mass % Mg: 0.6 to 1.0 mass % Ni: 0.7 to 1.3 mass % Fe: 1.15 to 1.25 mass % Ti: 0.10 to 0.2 mass % P: 0.004 to 0.02 mass % and a balance of Al and unavoidable impurities, wherein in an observed field of view of 0.2 mm2, the major axis length of the Al—Fe—Si based crystallites is 100 ?m or less by average length of 10 crystallites from the largest down. The method for producing the casting comprising casting a melt of aluminum alloy having the above chemical composition at cooling rate of 100° C./sec or more, then performing aging treatment.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: February 16, 2021
    Assignees: Nippon Light Metal Company, Ltd., Honda Motor Co., Ltd.
    Inventors: Izumi Yamamoto, Kazuhiro Oda, Hisayasu Kojima, Naoko Sato, Ryo Wakabayashi, Akito Tanihata
  • Patent number: 10923288
    Abstract: A method for producing an electrode for an aluminum electrolytic capacitor is provided that can reduce defects in a chemical formation film formed at a chemical formation voltage of 500 V or higher. For producing the electrode for an aluminum electrolytic capacitor, an aluminum electrode is brought into contact with pure water having a temperature of 70° C. or higher to form a hydrated film having a suitable film thickness on the aluminum electrode at a hydration step, and then chemical formation is performed thereon at a chemical formation voltage of 500 V or higher in a chemical formation solution having a temperature of 40° C. or higher at a chemical formation step. At the chemical formation step, when the relative velocity of the chemical formation solution to the aluminum electrode is represented by a three-dimensional velocity vector B?A and the absolute value of the velocity vector B?A is represented by |B?A|, the absolute value |B?A| of the velocity vector satisfies the following conditional formula.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: February 16, 2021
    Assignee: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Yuta Shimizu, Shuhei Enoki, Masahiko Katano, Toshifumi Taira, Kazuya Fujimoto, Shinya Sone
  • Patent number: 10906127
    Abstract: A friction stir welding method is provided that can prevent defective welding due to a shortage of metal. The friction stir welding method welds metal members (1, 2) using a primary joining rotary tool (F) having a stirring pin (F2), and includes steps of: butting in which the metal members (1, 2) are butted with each other at an angle to form a butted portion (J1); buildup welding in which buildup welding is applied along an inner corner of the metal members (1, 2) formed in the butting step to cover the inner corner by a weld metal (M); and inner corner joining in which only the stirring pin (F2) in rotation is inserted in the inner corner to plastically fluidize the weld metal (M) and the metal members (1, 2) for friction stir welding of the butted portion (J1).
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: February 2, 2021
    Assignee: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Nobushiro Seo, Hisashi Hori
  • Publication number: 20210016388
    Abstract: A method for manufacturing a composite slab to manufacture a plural layer clad material composed of different kinds of metals, the method including: a preparation process to prepare a bottom portion, a metallic box body having a peripheral wall portion standing on a peripheral edge of the bottom portion, and a metallic sealing body to seal an opening of the box body; a butting process to butt a side face of the sealing body against an inner wall face of the peripheral wall portion to form a butted portion with intermediate members being inserted in a recessed portion of the box body and a closing process to join and close the butted portion. At least one of the intermediate members is made of a material different from at least one of the box body and the sealing body.
    Type: Application
    Filed: March 18, 2019
    Publication date: January 21, 2021
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Hayato SATO, Tomohiro KOMOTO
  • Patent number: 10877165
    Abstract: A dosimeter container comprising a housing portion and a shield portion that surrounds the housing portion is provided. The housing portion houses a radiation dosage measuring device for measuring a dosage of predetermined radiation other than neutron radiation. The shield portion is composed of a member made of a material that transmits predetermined radiation and shields neutron radiation. The shield portion is a LiF sintered body, in particular, a 6LiF sintered body. Further, the shield portion includes at least two or more shield portion components (a body portion and a lid portion), in which adjacent members can abutt against each other. The housing portion is same size as or larger than the size of the radiation dosage measuring device; and the housing portion extends over the entirety of the components. The dosimeter container is preferably used as a dosage measuring body having a radiation dosage measuring device stored in the housing portion.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: December 29, 2020
    Assignee: Nippon Light Metal Company, Ltd.
    Inventors: Hideaki Usui, Hidaka Furuya, Maki Takahashi, Hidenori Ishikawa
  • Patent number: 10835976
    Abstract: Provided is a manufacturing method for a cooler, including brazing: a cooling plate (10) made of an aluminum alloy containing 0.35 mass % to 0.9 mass % of Mg and 0.2 mass % to 0.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: November 17, 2020
    Assignee: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Tomoyuki Hirayama, Yuichi Kikuchi, Tatsunori Akimoto, Kazuhito Seki, Akihiro Mogi, Takao Otaki
  • Publication number: 20200353557
    Abstract: A method for manufacturing a liquid-cooling jacket (1) where heat transfer fluid flows in a hollow part (14) defined by a jacket body (2) and a sealing body (3) includes: an overlapping process in which the sealing body (3) is placed on an end surface (11a) of a peripheral wall part (11) in such a way that the end surface (11a) and a back surface of the sealing body (3) are overlapped each other to form a first overlapped part (H1); and a primary joining process in which primary joining is performed by friction stirring in such a way that a rotary tool (FD) is moved once around a recessed part (13) along the first overlapped part (H1).
    Type: Application
    Filed: May 16, 2018
    Publication date: November 12, 2020
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Publication number: 20200353558
    Abstract: Provided is a method for manufacturing a liquid cooling jacket including a jacket body and a sealing body joined to the jacket body. The method includes steps of: preparing; placing; first primary joining with a rotary tool; and second primary joining with the rotary tool. A rotary tool includes a base end pin and a distal end pin. The distal end pin includes a flat surface and a protrusion extending from the flat surface. In the first primary joining and the second primary joining, friction stirring is performed in a state where a front surface of the sealing body is brought in contact with an outer peripheral surface of the base end pin, the sealing body is brought in contact with the flat surface of the distal end pin, and the jacket body is brought in contact with the protrusion.
    Type: Application
    Filed: August 1, 2018
    Publication date: November 12, 2020
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Publication number: 20200359523
    Abstract: A method for manufacturing a liquid-cooling jacket (1) where heat transfer fluid flows in a hollow part (14) defined by a jacket body (2) and a sealing body (3) includes: an overlapping process in which the sealing body (3) is placed on an end surface (11a) of a peripheral wall part (11) in such a way that the end surface (11a) and a back surface of the sealing body (3) are overlapped each other to form a first overlapped part (H1); and a primary joining process in which primary joining is performed by friction stirring in such a way that a rotary tool (F1) is moved once around a recessed part (13) along the first overlapped part (H1). In the primary joining process, the first overlapped part (H1) is joined in a state where the tip side pin is in contact with only the sealing body (3) or with the jacket body (2) and the sealing body (3) while the base side pin is in contact with the sealing body (3).
    Type: Application
    Filed: May 16, 2018
    Publication date: November 12, 2020
    Applicant: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Hisashi HORI, Nobushiro SEO, Kosuke YAMANAKA
  • Patent number: D914775
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: March 30, 2021
    Assignees: NIKKEIKIN ALUMINIUM CORE TECHNOLOGY COMPANY, LTD., NIPPON LIGHT METAL COMPANY, LTD., HORIKAWA INDUSTRY CO., LTD.
    Inventors: Mitsunori Kato, Toshiaki Yamazaki, Eiji Anzai, Shoichi Horikawa, Hiroyuki Horikawa