Patents Assigned to Hitachi Metals, Ltd.
  • Patent number: 10807543
    Abstract: A wire harness includes a cable that includes electric wires and a sheath covering the electric wires and is arranged so that the electric wires are exposed from an end portion of the sheath, a housing that accommodates the electric wires exposed from the end portion of the sheath, wire seal members arranged inside the housing to seal between the electric wires and the housing, a holder that includes an elastic body, a cylindrical sheath-side cylinder portion including an inner circumferential surface in contact with an outer circumferential surface of the sheath, and a cylindrical housing-side cylinder portion in contact with an outer circumferential surface of the housing, the sheath-side cylinder portion and the housing-side cylinder portion being integrally formed, and a first pressing member that presses the housing-side cylinder portion toward the housing and thereby fixes the housing-side cylinder portion to the housing.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: October 20, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Naoya Toyoshima, Hajime Maejo, Takahiro Futatsumori
  • Patent number: 10807167
    Abstract: The present invention provides a producing method of a rare earth sintered magnet which is suitable as a producing method of a high performance rare earth sintered magnet which can reduce the number of steps for reusing defective molded bodies generated in a wet molding step of the rare earth sintered magnet, and which has a small content amount of oxygen. The invention also provides a slurry recycling method used for the producing method, and a slurry recycling apparatus. Each of the methods includes a crushing step of crushing, in mineral oil and/or synthetic fluid, a molded body in which slurry formed from alloy powder for a rare earth sintered magnet and mineral oil and/or synthetic fluid is wet molded in magnetic field, and recycling the crushed molded body into slurry.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: October 20, 2020
    Assignee: HITACHI METALS, LTD.
    Inventor: Mitsuaki Mochizuki
  • Patent number: 10799944
    Abstract: A copper alloy material manufacturing equipment for manufacturing a copper alloy material by continuously casting molten copper. The equipment includes an element adding means for adding a metal element to the molten copper, a tundish for holding the molten copper containing the metal element, a pouring nozzle connected to the tundish to feed the molten copper from the tundish, and a trapping member arranged inside the tundish and including a same type of material as at least one of an oxide of the metal element, a nitride of the metal element, a carbide of the metal element and a sulfide of the metal element.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: October 13, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Keisuke Fujito, Shohei Hata, Takayuki Tsuji, Hiromitsu Kuroda
  • Publication number: 20200318995
    Abstract: A rotation detecting device includes a member to be detected, and a sensor section arranged opposite the member to be detected. The sensor section includes two magnetic sensors, each including a detecting portion to detect a magnetic field produced from the member to be detected, with the detecting portions of the sensors being arranged in such a manner as to overlap each other in an opposite arrangement direction of the sensor section and the member to be detected, and a housing provided to cover the sensors together, and including an opposite surface to the member to be detected. The detecting portion of one of the sensors, which is arranged in a side of the sensor section close to the member to be detected, is arranged in such a manner as to be inclined with respect to the opposite surface of the housing.
    Type: Application
    Filed: March 30, 2020
    Publication date: October 8, 2020
    Applicant: Hitachi Metals, Ltd.
    Inventors: Masaaki IMAHORI, Kazuhiko TOMITA
  • Patent number: 10793938
    Abstract: Provided is a method for producing a boron nitride nanotube-reinforced aluminum composite casting, the method being capable of reducing cost. The method for producing a boron nitride nanotube-reinforced aluminum composite casting comprises the steps of: (a) mixing boron nitride nanotubes and a first aluminum matrix and then pelletizing the resulting mixture; (b) heating and subjecting pellets obtained in step (a) to melt mixing to obtain a melt; (c) cooling and solidifying the melt obtained in step (b) to obtain a master batch; and (d) subjecting the master batch obtained in step (c) and the second aluminum matrix to melt mixing, and then cooling and solidifying the resulting mixture.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: October 6, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Makoto Okai, Hideki Yamaura, Kazutoshi Sugie, Hideya Yamane
  • Patent number: 10798811
    Abstract: A device includes: a first magnet array; a first magnet support body; a second magnet array; a second magnet support body; a gap drive mechanism for performing vertical drive of the magnet support bodies to change a gap; first, second connection beams connected to the magnet support bodies; a mechanism for connecting the connection beams to the gap drive mechanism; a cancellation spring mechanism for cancelling a suction force that acts between magnet arrays; and a spring interlocking mechanism for connecting the cancellation spring mechanism to the magnet support bodies. In the spring interlocking mechanism, first and second spring support frames that are connected to the first and second connection beams via a connecting portion, and a guide mechanism for guiding vertical movements of the first and second spring support frames are mounted, and the cancellation spring mechanism are mounted to both the first and second spring support frames.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: October 6, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Hideo Kitamura, Shinsaku Mizumoto
  • Patent number: 10794935
    Abstract: A current sensor includes a bus bar through which a measured current is carried, a pair of shielding plates that include a magnetic material, and are arranged to sandwich the bus bar in a thickness direction of the bus bar, and a magnetic detection element that is arranged between the bus bar and one of the shielding plates, and detects an intensity of magnetic field caused by the current carried through the bus bar. The shielding plate has a length of not less than 20 mm in a length direction of the bus bar, and a width of not less than 24 mm and not more than 38 mm in a width direction orthogonal to the length direction.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: October 6, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Ken Okuyama, Katsuya Akimoto, Naoki Futakuchi, Haruyasu Komano, Jun Umetsu, Yujiro Tomita
  • Publication number: 20200309740
    Abstract: A crack detection device performs online identification of the occurrence and propagation of a crack in the surface of the barrel portion of a rolling roll. A rolling roll is provided with the crack detection function without any substantial modification of the rolling device and without any continuous disposition of multiple sensors in the rolling roll. The detection device is incorporated in a rolling device having a barrel portion and shaft portions extending as a unit from both ends of the barrel portion and includes the rolling roll where an AE sensor detecting elastic waves generated on a surface of the barrel portion and a calculation unit calculating a feature value of the elastic waves detected by the AE sensor are disposed in at least one of the shaft portions and a discrimination unit discriminating, from the feature value, elastic waves attributable to a crack occurring in the barrel surface.
    Type: Application
    Filed: December 14, 2018
    Publication date: October 1, 2020
    Applicant: HITACHI METALS, LTD.
    Inventors: Keishi SATO, Masahiko OHSHIMA, Toshiyuki HATTORI, Tomohisa HEMMI, Masaaki TSUJI
  • Patent number: 10787725
    Abstract: An object of the invention is to provide: an HEA article that has excellent homogeneity in the alloy composition and microstructure as well as significant shape controllability, using an HEA with significant mechanical strength and high corrosion resistance; a method for manufacturing the HEA article; and a product using the HEA article. There is provided an HEA article comprising: Co, Cr, Fe, Ni, and Ti elements, each element in content of 5 to 35 atomic %; more than 0 atomic % to 8 atomic % of Mo %; and remainder substances of unavoidable impurities.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: September 29, 2020
    Assignee: Hitachi Metals, Ltd.
    Inventors: Tadashi Fujieda, Kousuke Kuwabara, Mamoru Hirota, Kinya Aota, Takahiko Kato, Akihiko Chiba, Yuichiro Koizumi, Kenta Yamanaka
  • Patent number: 10787719
    Abstract: Provided are a high-speed tool steel having excellent hot workability, and excellent damage resistance when made into various tools; a material for tools, and a method for producing the same. The high-speed tool steel contains, in mass %, 0.9-1.2% of C, 0.1-1.0% of Si, 1.0% or less of Mn, 3.0-5.0% of Cr, 2.1-3.5% of W, 9.0-10.0% of Mo, 0.9-1.2% of V, 5.0-10.0% of Co, 0.020% or less of N, and the remainder being Fe and impurities, wherein an M value calculated by a formula satisfies ?1.5?M value?1.5. Formula: M value=?9.500+9.334[% C]?0.275[% Si]?0.566[% W]?0.404[% Mo]+3.980[% V]+0.166[% Co], where the characters in brackets [ ] indicate the contained amounts (mass %) of the respective elements. The present invention also pertains to: a material for tools, which is obtained by using the high-speed tool steel; and a method for producing the material for tools.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: September 29, 2020
    Assignee: Hitachi Metals, Ltd.
    Inventor: Shiho Fukumoto
  • Publication number: 20200298294
    Abstract: An outer layer of a rolling roll having a chemical composition comprising by mass 1.3-2.8% of C, 0.3-1.8% of Si, 0.3-2.5% of Mn, 0-6.5% of Ni, 1-10% of Cr, 0.9-6% of Mo, 0-8% of W, 0.5-6% of V, 0-3% of Nb, and 0% or more and less than 0.01% of B, the balance being Fe and inevitable impurities, and meeting the formulae (1): 1000?1177?52C+14Si?11Mn+6.8Cr+1W+0.65Mo+12V+15Nb?1115, and (2): 5?Cr+Mo+0.5W+V+1.2Nb?15, wherein C, Si, Mn, Cr, W, Mo, V and Nb represent % by mass of these elements, and a structure containing eutectic carbide without graphite.
    Type: Application
    Filed: March 28, 2017
    Publication date: September 24, 2020
    Applicant: Hitachi Metals, Ltd.
    Inventors: Yasunori NOZAKI, Nozomu ODA, Shiho FUKUMOTO
  • Publication number: 20200299803
    Abstract: An object of the present invention is to provide a method for separating Dy and Tb from an alloy containing Dy and Tb as constitutional metals without using a solvent extraction method. The method of the present invention as a means for resolution is characterized by comprising vaporizing Dy by subjecting the alloy to a heat treatment in an atmosphere of a pressure Pt(Pa) that, when a Dy—Tb composition in the alloy is DyxTby (atomic composition ratio) and a heat treatment temperature is t, satisfies formula 1: PtTb<Pt<PtDy×(x/(x+y)), wherein PtDy is a vapor pressure (Pa) of Dy alone at the temperature t and PtTb is a vapor pressure (Pa) of Tb alone at the temperature t.
    Type: Application
    Filed: March 27, 2017
    Publication date: September 24, 2020
    Applicant: HITACHI METALS, LTD.
    Inventor: Toshinobu NIINAE
  • Publication number: 20200299814
    Abstract: Provided is a cemented carbide composite material including cemented carbide and non-cemented carbide having better high-temperature strength than conventional materials and capable of suppressing breakage and peeling of the composite material. A cemented carbide composite material includes: a cemented carbide part including WC—Co-based cemented carbide; a substrate part including metal that contains at least one of Ni and Co that accounts for 50 mass % or more in total. This cemented carbide composite material has an intermediate layer between the cemented carbide composite material and the substrate part, the intermediate layer containing components of the cemented carbide part and components of the substrate part. The intermediate layer includes a part having a gamma phase fraction of 80% or more and having Vickers hardness less than 700 HV.
    Type: Application
    Filed: September 20, 2018
    Publication date: September 24, 2020
    Applicant: HITACHI METALS, LTD.
    Inventors: Hiroshi SHIRATORI, Hirotsugu KAWANAKA, Shuho KOSEKI, Tadashi FURUYA
  • Patent number: 10784018
    Abstract: An insulated wire having an electrical wire structure capable of reducing an outer diameter while an insulating property and a flame-retardant property are highly kept is provided. In the insulated wire including: a conductor; and a coating layer arranged on an outer periphery of the conductor, the insulated wire has a flame-retardant property that allows the insulated wire to pass a vertical tray flame test (VTFT) on the basis of EN 50266-2-4, has a direct-current stability that allows the insulated wire to pass a direct-current stability test in conformity to EN 50305.6.7, has a diameter of the conductor that is equal to or smaller than 1.25 mm, and has a thickness of the coating layer that is smaller than 0.6 mm.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: September 22, 2020
    Assignee: Hitachi Metals, Ltd.
    Inventors: Masafumi Kaga, Tamotsu Kibe
  • Publication number: 20200296828
    Abstract: A ceramic substrate capable of suppressing the reduced reliability caused by via misalignment during manufacturing, and capable of suppressing the reduced reliability caused by thermal stress between the ceramic substrate and a mounting board is provided. The ceramic substrate includes an electrode and a via connected to the electrode. The ceramic substrate includes a plurality of vias provided to a center portion in a first direction of the electrode along a second direction. The first direction is parallel to a surface on which the electrode is disposed. The first direction is a direction connecting a center of the surface to a center of the electrode. The second direction is parallel to the surface and perpendicular to the first direction.
    Type: Application
    Filed: January 16, 2020
    Publication date: September 17, 2020
    Applicant: HITACHI METALS, LTD.
    Inventors: Hisashi TANIE, Kenji HAYASHI, Hiromi SHIMAZU
  • Publication number: 20200290118
    Abstract: An objective of the invention to provide an alloy article that exhibits even better mechanical properties and/or even higher corrosion resistance than conventional high entropy articles without sacrificing the attractive properties thereof, a product formed of the alloy article, and a fluid machine having the product. An alloy article according to the invention has a predetermined chemical composition comprising: Co, Cr, Fe, Ni and Ti, each within a range of 5 atomic % or more and 35 atomic % or less; Mo within a range of more than 0 atomic % and less than 8 atomic %; an element with a larger atomic radius than the atomic radiuses of Co, Cr, Fe and Ni within a range of more than 0 atomic % and 4 atomic % or less; and a balance of inevitable impurities.
    Type: Application
    Filed: October 31, 2018
    Publication date: September 17, 2020
    Applicant: HITACHI METALS, LTD.
    Inventors: Meichuan CHEN, Tadashi FUJIEDA, Kousuke KUWABARA
  • Patent number: 10766118
    Abstract: An edge processing device includes: conveying means that convey a molded powder compact, a first rotating tool disposed on one side and a second rotating tool disposed on the other side and rotating in a direction identical to a direction the first rotating tool rotates. The first rotating tool contacts from an upstream side with a first corner portion between one side surface of a processing target portion of the molded powder compact and a rear surface of the processing target portion. The second rotating tool contacts from a downstream side with a second corner portion between the other side surface of the processing target portion and a front surface of the processing target portion. The second rotating tool faces the first rotating tool with the conveying path therebetween, and is positionally displaced to the downstream side with respect to the first rotating tool.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: September 8, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Shinichi Nakata, Kazunori Nishimura, Katsumasa Yamasaki
  • Patent number: 10770772
    Abstract: A signal transmission cable includes a signal line, an insulation layer configured to cover the signal line, and a plating layer configured to cover the insulation layer. An arithmetic average roughness Ra of an outer peripheral surface of the insulation layer is between 0.6 ?m and 10 ?m inclusive. A method of manufacturing the signal transmission cable includes covering the signal line with the insulation layer, followed by conducting a dry-ice-blasting on the outer peripheral surface of the insulation layer, followed by conducting a corona discharge exposure process on the outer peripheral surface, and forming the plating layer on the outer peripheral surface.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: September 8, 2020
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kazufumi Suenaga, Yuju Endo, Hideyuki Sagawa, Takahiro Sugiyama, Hiroshi Ishikawa
  • Patent number: 10770224
    Abstract: An object of the present invention is to provide a novel method for forming an electrolytic copper plating film having excellent adhesion on the surface of a rare earth metal-based permanent magnet. The method of the present invention as a means for achieving the object is characterized in that after a magnet is immersed in a plating solution, a cathode current density of 0.05 A/dm2 to 4.0 A/dm2 for performing an electrolytic copper plating treatment is applied thereto over 10 seconds to 180 seconds to start the treatment.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: September 8, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Masanao Kamachi, Koshi Yoshimura
  • Patent number: 10766068
    Abstract: A die-casting sleeve comprising an outer cylinder made of a low-thermal-expansion metal material, and an inner cylinder shrink-fit into the outer cylinder; an outer peripheral surface of the outer cylinder being provided with a flange for fixing the die-casting sleeve to a stationary die block of a die-casting machine; the inner cylinder being constituted by a front member of a low-thermal-expansion metal material arranged on the injection opening side, and a rear member of silicon-nitride-based ceramics arranged in close contact with a rear end surface of the front member; the outer cylinder having an average thermal expansion coefficient ?A of 1×10?6/° C. to 5×10?6/° C. between 20° C. and 200° C.; the front member having an average thermal expansion coefficient ?B of 1×10?6/° C. to 5×10?6/° C. between 20° C. and 200° C.; the difference between ?A and ?B being ?1×10?6/° C. to 1×10?6/° C.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: September 8, 2020
    Assignee: HITACHI METALS, LTD.
    Inventors: Nagato Maeda, Eisuke Ogawa