Patents Assigned to Hitachi Metals, Ltd.
  • Patent number: 11521766
    Abstract: A wire harness electric wire length correcting device, which corrects a design value of an electric wire length of an electric wire included in a wire harness, includes an electric wire identifying means including an identification mark, which is attached to an end portion of the electric wire, and which is to be cut off from the electric wire when the wire harness is installed on an installation target object, so as to use the identification mark to identify which electric wire an end cut off from the electric wire has been cut off from, a measuring means for measuring a length of the cut off end, and a correcting means for, for the electric wire identified by the electric wire identifying means, correcting the design value of the electric wire length of that electric wire, based on the length of the cut off end measured by the measuring means.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: December 6, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Kenji Kawase, Raifu Yamamoto, Katsuju Aoki, Takumi Kobayashi
  • Patent number: 11521782
    Abstract: A transformer includes an iron core formed by using an Fe-based amorphous alloy ribbon and a winding wound around the iron core. The ribbon includes dotted line laser radiation traces arranged on at least a first surface in a casting direction. Each of the dotted line laser radiation traces is formed by arranging laser radiation marks on the first surface along a width direction. A spot space is from 0.10 mm to 0.50 mm. In a case in which a line space is d1 (mm), and the spot space is d2 (mm), a number density D of the laser radiation marks (D=(1/d1)×(1/d2)) is from 0.05 marks/mm2 to 0.50 marks/mm2. An iron loss of the ribbon in a single sheet is 0.150 W/kg or less at a frequency of 60 Hz and a magnetic flux density of 1.45 T.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: December 6, 2022
    Assignee: Hitachi Metals, Ltd.
    Inventors: Shin Nakajima, Hajime Itagaki
  • Patent number: 11519056
    Abstract: Provided are a Ni-based heat resistant superalloy for aircraft engine cases excellent in high-temperature characteristic such as tensile characteristics and low-cycle fatigue characteristics in a high-temperature range and also excellent in workability, and an aircraft engine case formed of the same. The Ni-based heat resistant superalloy has composition containing, by mass, Co: 4.0 to 11.0%, Cr: 12.0 to 17.0%, Al: 2.0 to 4.0%, Ti: 2.0 to 4.0%, Al+Ti: 4.6 to 6.7%, Mo: more than 5.5 to 10.0%, W: more than 0 to 4.0%, B: 0.001 to 0.040%, C: 0.02 to 0.06%, Zr: 0 to 0.05%, Mg: 0 to 0.005%, P: 0 to 0.01%, Nb: 0 to 1.0%, Ta: 0 to 1.0%, and Fe: 0 to 2.0%, and the balance of Ni with inevitable impurities, and is suitable for aircraft engine cases.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: December 6, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Takanori Matsui, Tadashi Fukuda
  • Patent number: 11521765
    Abstract: A tube equipped electric wire, which is configured to be used in a catheter equipped with a catheter tube and be installed within the catheter tube, is composed of a tube including an outer surface, and one or more electric wires helically wound around the outer surface of the tube.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: December 6, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Kotaro Tanaka, Takanobu Watanabe, Kimika Kudo, Takanori Komuro
  • Patent number: 11515076
    Abstract: A coil device comprising a pair of coil members annularly assembled at two connecting end portions; each coil member comprising a magnetic core, a resin case substantially entirely surrounding the magnetic core, and a coil wound around the resin case; the resin case having connecting means and guide means in the connecting end portion of each coil member; and the connected coil members being adhered to each other in the connecting end portions.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: November 29, 2022
    Assignee: HITACHI METALS, LTD.
    Inventor: Mutsuhito Sakaguchi
  • Patent number: 11508512
    Abstract: The invention provides a method for manufacturing a powder magnetic core through simple compression molding and capable of manufacturing a complicatedly shaped powder magnetic core with reliable high strength and insulating properties. The invention is directed to a method for manufacturing a powder magnetic core with a metallic soft magnetic material powder, the method including: a first step including mixing a soft magnetic material powder and a binder; a second step including compression molding the mixture obtained after the first step; a third step including performing at least one of grinding and cutting on the compact obtained after the second step; and a fourth step including heat-treating the compact after the third step, wherein in the fourth step, the compact is heat-treated so that an oxide layer containing an element constituting the soft magnetic material powder is formed on the surface of the soft magnetic material powder.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: November 22, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Kazunori Nishimura, Shin Noguchi, Toshio Mihara
  • Publication number: 20220364207
    Abstract: The present invention provides an alloy, an alloy powder, an alloy member, and a composite member which are excellent in corrosion resistance and wear resistance, have crack resistance, and are suitable for an additive manufacturing method and the like. An alloy and an alloy powder include, by mass %, Cr: 18 to 22%, Mo: 18 to 28%, Ta: 1.5 to 57%, C: 1.0 to 2.5%, Nb: 0 to 42%, Ti: 0 to 15%, V: 0 to 27%, Zr: 0 to 29%, and a remainder consisting of Ni and unavoidable impurities, where a molar ratio of (Ta+0.7Nb+Ti+0.6V+Zr)/C=0.5 to 1.5 is satisfied. An alloy member is an additively manufactured product or a cast having such a solidification structure, and the solidification structure is a dendrite-like crystal structure having a metal phase having a face-centered cubic structure and carbides.
    Type: Application
    Filed: March 31, 2021
    Publication date: November 17, 2022
    Applicant: HITACHI METALS, LTD.
    Inventors: Hiroshi SHIRATORI, Kazuya SHINAGAWA, Kousuke KUWABARA, Shuho KOSEKI
  • Patent number: 11501892
    Abstract: A wire harness includes a multi-core cable including a group of cables composed of a plurality of cables, and a sheath provided around the group of cables, and a resin mold covering the group of cables at a cable branching portion where the group of cables exposed from an end of the sheath of the multi-core cable are branched. An outermost layer of each cable constituting the group of cables includes polyolefin or thermoplastic polyurethane. When the sheath includes polyolefins, the group of cables includes at least one cable including an outermost layer including thermoplastic polyurethane. When the sheath includes thermoplastic polyurethane, the group of cables includes at least one cable having an outermost layer comprising polyolefin. The resin mold includes a resin composition of a polymer alloy of a first polymer including at least one of polyamide polymer, polyester polymer, and thermoplastic polyurethane and a second polymer including polyolefin.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: November 15, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Keisuke Sugita, Masahiro Abe
  • Patent number: 11495733
    Abstract: A magnetostrictive-type sensor temperature-detecting circuit configured to be used in a magnetostrictive-type sensor including an applied stress-detecting coil, and a driving section to output an alternating voltage, excite the coil with a resulting alternating electric current, and switch flow directions of the electric current flowing in the coil in response to switching voltage polarities of the output alternating voltage, to detect a temperature of the coil in the sensor. This temperature-detecting circuit includes an alternating electric current direction switching time-detecting section to detect an amount of time from when the voltage polarities of the output alternating voltage are switched until when the flow directions of the electric current flowing in the coil are switched, and a temperature-computing section to compute the temperature of the coil on the basis of the amount of time detected by the alternating electric current direction switching time-detecting section.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: November 8, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Yuta Sugiyama, Teruyuki Nakamura
  • Patent number: 11492685
    Abstract: Provided are: an alloy member that is excellent in homogeneity of both the alloy composition and microstructure and excellent in shape controllability and includes a high entropy alloy having high mechanical properties and high corrosion resistance, a process for producing the same, and a product including the alloy member. In the present invention, the alloy member having a chemical composition comprising elements of Co, Cr, Fe, Ni, and Ti each in an amount within a range of 5 atomic % or more and 35 atomic % or less and Mo in an amount within a range of more than 0 atomic % and 8 atomic % or less, the reminder consisting of unavoidable impurities, wherein ultrafine grains having an average grain diameter of 100 nm or less are dispersed and precipitated in a parent phase crystal.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: November 8, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Tadashi Fujieda, Hiroshi Shiratori, Kousuke Kuwabara, Atsuhiko Onuma
  • Patent number: 11491568
    Abstract: A non-magnetic member, a first magnetic member and a second magnetic member are prepared. The first magnetic member and the second magnetic member are connected to the non-magnetic member. Then, a first bonding portion which bonds the non-magnetic member and the first magnetic member to each other, and a second bonding portion which bonds the non-magnetic member and the second magnetic member to each other are formed. A hot isostatic pressing process is performed to the non-magnetic member, the first magnetic member and the second magnetic member to establish diffusion-bond. Thereafter, the non-magnetic member, the first magnetic member and the second magnetic member are hollowed, and the first bonding portion and the second bonding portion are removed. Thereafter, the non-magnetic member becomes a non-magnetic body, the first magnetic member becomes a first magnetic body, the second magnetic member becomes a second magnetic body and a sleeve is obtained.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: November 8, 2022
    Assignee: HITACHI METALS, LTD.
    Inventor: Yoshinobu Nakamura
  • Patent number: 11486014
    Abstract: Provided is a method capable of producing a plated black heart malleable cast iron member having a plating layer with excellent adhesiveness to a black heart malleable cast iron member, while having less burden on the environment, compared to conventional methods.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: November 1, 2022
    Assignee: Hitachi Metals, Ltd.
    Inventors: Ryo Goto, Takayuki Fukaya, Hiroshi Matsui, Akinori Sawada
  • Patent number: 11488744
    Abstract: A molded cable comprises a conductor, an insulation inner layer, an insulation outer layer, and a resin molded body. The insulation inner layer comprises a crosslinked ethylene resin composition and is provided an outer circumference of the conductor. The insulation outer layer comprises a crosslinked thermoplastic polyurethane composition and is provided on an outer circumference of the insulation inner layer. Arithmetic average roughness (Ra) of a surface of the insulation outer layer is 5 ?m to 100 ?m. The resin molded body coats an exposed end portion of the conductor and an end portion of the insulation outer layer at a side of the exposed end portion of the conductor. The resin molded body is fused to the insulation outer layer.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: November 1, 2022
    Assignee: Hitachi Metals, Ltd.
    Inventors: Keisuke Sugita, Akinari Nakayama
  • Patent number: 11484942
    Abstract: An alloy powder having an alloy composition represented by Fe100-a-b-c-d-e-fCuaSibBcCrdSneCf, wherein a, b, c, d, e and f are atomic % meeting 0.80?a?1.80, 2.00?b?10.00, 11.00?c?17.00, 0.10?d?2.00, 0.01?e?1.50, and 0.10?f?0.40.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: November 1, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Motoki Ohta, Nobuhiko Chiwata, Tetsuro Kato
  • Publication number: 20220341002
    Abstract: An object of the present invention is to provide a Zr—Nb-based alloy material as a low-magnetic susceptibility alloy having a high corrosion resistance while maintaining a magnetic susceptibility equivalent to or less than the magnetic susceptibility of the biological alloy of the related art, a method for manufacturing the alloy material, and a Zr—Nb-based alloy product. The Zr—Nb-based alloy material according to the present invention includes, as a chemical composition, 3% by mass or more and 18% by mass or less of Nb, 12% by mass or less of Ti, 6% by mass or less of Cr, 6% by mass or less of Cu, 5% by mass or less of Bi, and a remainder consisting of Zr and unavoidable impurities, in which isothermal ? phase particles are dispersed and precipitated in ? phase crystal grains of a parent phase.
    Type: Application
    Filed: September 29, 2020
    Publication date: October 27, 2022
    Applicant: Hitachi Metals, Ltd.
    Inventors: Shinya TAMURA, Tomonori KIMURA, Yasuhisa AONO
  • Publication number: 20220340988
    Abstract: Provided are: steel for knives, having a higher hardness and better corrosion resistance than conventional steel for knives; a knife; steel for martensitic knives; and a production method for same. The steel for knives comprises a component composition containing, in mass %, 0.45%-1.00% C, 0.1%-1.5% Si, 0.1%-1.5% Mn, 7.5%-11.0% Cr, and 0.5%-3.0% of either Mo or W or a complex of both (Mo+W/2), with the remainder being Fe and unavoidable impurities. Also provided are steel for martensitic knives and a knife. A production method for steel for martensitic knives is also provided that includes a quenching temperature at quenching of 1,050-1,250° C., a processing temperature for subzero processing of no more than ?50° C., and a tempering temperature at tempering of 100-400° C., and obtains steel for martensitic knives that has a hardness of at least 700 HV.
    Type: Application
    Filed: September 3, 2020
    Publication date: October 27, 2022
    Applicant: HITACHI METALS, LTD.
    Inventor: Kentaro FUKUMOTO
  • Publication number: 20220344980
    Abstract: The stator for a rotating electrical machine includes an annular first iron core part, which is a stacked body including electrical steel plates, and second iron core part, which is a stacked body including an amorphous soft magnetic metal or a nanocrystalline soft magnetic metal, wherein: the annular first iron core part includes a plurality of tooth parts which protrude toward the inner circumferential side and around which a coil is wound, and first groove parts formed within each tooth part from an outer circumferential surface; and the second iron core parts are disposed in the first groove parts.
    Type: Application
    Filed: September 23, 2020
    Publication date: October 27, 2022
    Applicant: HITACHI METALS, LTD.
    Inventors: Mamoru KIMURA, Hirohisa SANO, Kyohei AIMUTA, Toshio ABE, Motoki OHTA
  • Publication number: 20220339685
    Abstract: A centrifugally cast composite roll for hot rolling comprising an outer layer made of an Fe-based alloy having a chemical composition comprising by mass 2.6-3.6% of C, 0.1-3% of Si, 0.3-2% of Mn, 2.3-5.5% of Ni, 0.5-3.2% of Cr, 0.3-1.6% of Mo, 1.8-3.4% of V, and 0.7-2.4% of Nb, 1.4 ?V/Nb ?2.7, a V equivalent (Veq=V+0.55 Nb) being 2.60-4% by mass, and the balance being Fe and impurities, and an inner layer made of an iron-based alloy and integrally fused to the outer layer.
    Type: Application
    Filed: October 16, 2020
    Publication date: October 27, 2022
    Applicant: HITACHI METALS, LTD.
    Inventors: Yasunori NOZAKI, Nozomu ODA, Toshiyuki HATTORI
  • Publication number: 20220331858
    Abstract: A spherical Ti-based powder and a manufacturing method therefor are provided. The spherical Ti-based powder has a 50% particle size (D50) of 1 to 250 ?m in a cumulative particle size distribution based on volume, in which a total amount of oxygen and hydrogen is less than 3000 ppm by mass, an area defect rate in a cross-section of the spherical Ti-based powder is less than 0.100%, and an area circularity of the spherical Ti-based powder in a secondary projection image is 0.90 or more. The spherical Ti-based powder can be obtained by subjecting a pulverized Ti-based powder to a fusion and solidification treatment using a thermal plasma in which a flow rate of hydrogen gas as a working gas is adjusted to less than 0.3 l/min.
    Type: Application
    Filed: June 30, 2022
    Publication date: October 20, 2022
    Applicant: HITACHI METALS, LTD.
    Inventors: Koichi Sakamaki, Kazuya SAITO, KIYOMI NAKAMURA
  • Patent number: 11476014
    Abstract: A wire harness includes a cable and a holding member. The cable includes a twisted wire, and an insulation coating that coats the twisted wire. The cable has a bent portion. The holding member covers a range of the cable including the bent portion, and retains a shape of the bent portion. The twisted wire is in contact with the holding member at least in a part of the bent portion.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: October 18, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Hirotaka Eshima, Takahiro Futatsumori, Shingo Hatayama