Patents Assigned to Hitachi Metals, Ltd.
  • Publication number: 20220193593
    Abstract: A ceramic honeycomb filter has (a) cross section areas of intake flow paths being larger than those of discharge flow paths; (b) the intake and discharge flow paths having octagonal cross section shapes with four-fold rotation symmetry each obtained by cutting off four corners from a square; (c) the intake and discharge flow paths being alternately arranged in a first direction and a second direction perpendicular to the first direction, such that their opposing sides are parallel; (d) the opening ratio of the intake flow paths being 45-60%; (e) the number of the flow paths per cm2 being 30-60; (f) the thickness t1 of a cell wall between an intake flow path and a discharge flow path adjacent to that intake flow path being 0.150-0.260 mm; and (g) the thickness t2 of a cell wall between adjacent intake flow paths meeting 1.175<t2/t1<1.6.
    Type: Application
    Filed: July 30, 2020
    Publication date: June 23, 2022
    Applicant: HITACHI METALS, LTD.
    Inventor: Tomohisa OGATA
  • Patent number: 11358209
    Abstract: Provided is a method for producing a hot forged material capable of preventing the generation of double-barreling shaped forging defects. The method for producing a hot forged material, wherein both an upper die and a lower die are made of Ni-based super heat-resistant alloy and the method comprises a hot forging step of pressing a material for hot forging by the lower die and the upper die in the air to form the hot forged material, the method comprising: a raw material heating step of heating the material for hot forging in a furnace to a heating temperature within a range of 1025 to 1150° C.; a die heating step of heating the upper die and the lower die to a heating temperature within a range of 950 to 1075° C.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: June 14, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Shogo Suzuki, Tomonori Ueno, Shinichi Kobayashi, Shoichi Takahashi, Takanori Matsui
  • Patent number: 11359638
    Abstract: An object of the invention is to provide an alloy article that exhibits even better mechanical properties than conventional high entropy alloy articles without sacrificing high corrosion resistance thereof. An alloy article according to the invention comprises matrix phase crystal grains being equiaxed crystals with an average crystal grain size of 150 ?m or less, the alloy article having a metallic composition including: 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 %; and a balance comprising inevitable impurities, wherein in the matrix phase crystal grains, ultrafine particles with an average particle size of 100 nm or less and oxide particles with an average particle size of 100 nm or less are dispersedly precipitated.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: June 14, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Meichuan Chen, Tadashi Fujieda, Kousuke Kuwabara
  • Publication number: 20220176491
    Abstract: Disclosed is a manufacturing method of a welded pipe, which includes: bending a stainless steel strip while conveying the stainless steel strip in one direction to thereby form a pipe; and welding a butting part of the formed pipe.
    Type: Application
    Filed: March 25, 2020
    Publication date: June 9, 2022
    Applicant: Hitachi Metals, Ltd.
    Inventors: Hironori Yamane, Takahiro Yokawa, Makoto Sasaki
  • Publication number: 20220176676
    Abstract: The method is for manufacturing a clad material (30), which includes: clad rolling for rolling and bonding a first metal plate (131) made of stainless steel, a second metal plate (132) made of Cu or a Cu alloy, and a third metal plate (133) made of stainless steel in a state in which the first metal plate, the second metal plate, and the third metal plate are stacked in this order. The clad rolling is performed with a pressure-bonding load of 4.4×103 N/mm or more. The second layer is made of Cu or a Cu alloy. The third layer is made of stainless steel. The clad material has an overall thickness of 1 mm or less.
    Type: Application
    Filed: February 28, 2022
    Publication date: June 9, 2022
    Applicant: HITACHI METALS, LTD.
    Inventor: Shinji Yamamoto
  • Patent number: 11355267
    Abstract: A wire harness producing device configured to produce a wire harness by displaying a wire laying-out drawing in a full size in a length direction on a plurality of display devices, and laying-out electric wires along the wire laying-out drawing. The device includes a displaying control section configured to look up operation recipe information configured as a database capable of identifying wire laying-out order numbers of the electric wires, and in turn display wire laying-out position indicators configured to indicate positions of the electric wires to be laid out, on the plurality of display devices, according to a wire laying-out order of the electric wires. The operation recipe information includes coordinate information for indicating displaying positions for the wire laying-out position indicators. The displaying control section is configured to display the wire laying-out position indicators, in the displaying positions indicated by the coordinate information on the plurality of display devices.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: June 7, 2022
    Assignee: HITACHI METALS, LTD.
    Inventor: Kenji Kawase
  • Patent number: 11355258
    Abstract: A wire rod made of an aluminum alloy. The aluminum alloy includes Al crystal grains, an Al—Zr compound, and an Al—Co—Fe or Al—Ni—Fe compound. The aluminum alloy includes high-angle tilt crystal grain boundaries, each of which has a difference between crystal orientations in both its sides of 15 degrees or more, and low-angle tilt crystal grain boundaries, each of which has a difference between crystal orientations in both its sides of 2 degrees or more and less than 15 degrees. An average grain diameter of ones of the Al crystal grains surrounded by the high-angle boundaries is 12 ?m or more. An average grain diameter of the ones of the Al crystal grains surrounded by the high-angle boundaries, ones of the Al crystal grains surrounded by the high-angle boundaries and the low-angle boundaries, and ones of the Al crystal grains surrounded by the low-angle boundaries, is 10 ?m or less.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: June 7, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Toru Sumi, Kazuya Nishi, Shohei Hata, Takashi Hayasaka, Takeshi Usami
  • Patent number: 11355265
    Abstract: A cable is composed of a cable core including one or more electric wires, a braided shield covering a periphery of the cable core and including braided metal wires, a sheath covering a periphery of the braided shield, and a cushion layer provided between the cable core and the braided shield. The cushion layer is composed of a braid including braided linear shape fiber yarns.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: June 7, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Masashi Moriyama, Detian Huang, Yoshinori Tsukamoto
  • Patent number: 11346686
    Abstract: A rotation detection device that detects a rotational speed of a rotating member by using a magnetic sensor, includes a detected member mounted to the rotating member, and a sensor section mounted to a stationary member not rotating with rotation of the rotating member. A through-hole that penetrates in a direction intersecting with a rotational axis of the rotating member is formed at the stationary member. The sensor section includes the magnetic sensors each including a detection section that includes a magnetism detection element and a cover covering the magnetism detection element, and a housing portion coating the magnetic sensors. The housing portion is inserted into the through-hole in the direction intersecting with the rotational axis. The detection sections are arranged at a position shifted from the rotational axis along the detected member in a direction intersecting with an inserting direction that inserts the housing portion into the through-hole.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: May 31, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Takashi Onimoto, Teruyoshi Shirota
  • Patent number: 11346731
    Abstract: A detection circuit for a magnetostrictive torque sensor is configured to detect a torque applied to a magnetostrictive material treated by shot peening. The detection circuit includes a detection coil provided around the magnetostrictive material, and a drive unit for providing alternating current excitation to the detection coil. The torque applied to the magnetostrictive material is detected based on a change in inductance of the detection coil, and the drive unit provides alternating current excitation at a frequency at which a skin effect thickness is not more than an effective depth of the shot peening.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: May 31, 2022
    Assignees: HITACHI METALS, LTD., NSK LTD.
    Inventors: Yuta Sugiyama, Teruyuki Nakamura, Junji Ono, Kota Fukuda
  • Patent number: 11340196
    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: Grant
    Filed: December 14, 2018
    Date of Patent: May 24, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Keishi Sato, Masahiko Ohshima, Toshiyuki Hattori, Tomohisa Hemmi, Masaaki Tsuji
  • Publication number: 20220154323
    Abstract: A coated mold which can exhibit good sliding properties, and has further reduced droplets and excellent durability. The coated mold has a hard coating on a work surface, the hard coating including layer A in which layer a1 and layer a2 are alternately laminated, wherein the layer a1 is composed of a Cr-based nitride and has a thickness of 100 nm or less, and the layer a2 is composed of a nitride or carbonitride of (V1-aMa) (M is at least one selected from Mo and W), has an atomic ratio a of M to the sum of V and M of 0.05 or more and 0.45 or less, and has a thickness of 80 nm or less. Also: a method for manufacturing a coated mold; and a hard coat-forming target which can be used in the method for manufacturing a coated mold.
    Type: Application
    Filed: March 18, 2020
    Publication date: May 19, 2022
    Applicant: HITACHI METALS, LTD.
    Inventors: Tatsuya SHOUJI, Fumiaki HONDA
  • Patent number: 11331718
    Abstract: A method for calculating a conveyance velocity at which oscillation of a liquid surface is suppressed in conveying a container in which a liquid is accommodated, e.g., a ladle in which molten metal is accommodated. In a graph of conveyance velocity versus conveyance time, an upwardly convex parabola and a downwardly convex parabola having vertical symmetry are prepared in advance, the downwardly convex parabola and the upwardly convex parabola are smoothly connected to form an acceleration curve, the upwardly convex parabola and the downwardly convex parabola are smoothly connected to form a deceleration curve, and the conveyance velocity is obtained from the acceleration curve and the deceleration curve smoothly connected where the slope thereof is zero.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: May 17, 2022
    Assignee: HITACHI METALS, LTD.
    Inventor: Takuya Harada
  • Publication number: 20220145427
    Abstract: The invention addresses the problem of providing an Ni-based corrosion resistant alloy powder that is suitable for additive manufacturing, and a manufacturing method for an additive manufacturing product using the powder, the product having excellent corrosion-resistance and few defects. The invention consists of an Ni-based alloy powder having a component composition, in percentages by mass, of 14.5-23.9% Cr, 12.0-23.0% Mo, 0.01-7.00% Fe, 0.001-2.500% Co, 0.010% or less Mg, 0.040% or less N, 0.001-0.50% Mn, 0.001-0.200% Si, more than 0-0.50% Al, 0.001-0.500% Ti, 0.250% or less Cu, 0.001-0.300% V, 0.0001-0.0050% B, 0.0001-0.0200% Zr, and 0.0010-0.0300% O, the remainder being Ni, and contained as inevitable impurities, less than 0.05% C, less than 0.01% S, and less than 0.01% P. The angle of repose of the Ni-based alloy powder is 48 degrees or less.
    Type: Application
    Filed: November 28, 2019
    Publication date: May 12, 2022
    Applicant: HITACHI METALS, LTD.
    Inventors: Yuzo DAIGO, Katsuo SUGAHARA
  • Publication number: 20220143701
    Abstract: An additive manufacturing article according to the present invention is composed of an Ni-based alloy that contains Cr and Mo, while containing Ni in the largest amount in terms of the mass ratio; and an oxide film that is mainly composed of Cr is formed in a part or the entirety of the surface. This oxide film that is mainly composed of Cr has a region wherein the O content is higher in comparison to that in the inner part, and the Cr content is higher than the Ni content. It is preferable that this oxide film has a thickness of 1-20 nm from the surface; and it is also preferable that this oxide film is formed so as to be suited to a corrosive environment contact surface. In addition, this oxide film is able to be formed during additive manufacturing of the additive manufacturing article.
    Type: Application
    Filed: March 2, 2020
    Publication date: May 12, 2022
    Applicant: HITACHI METALS, LTD.
    Inventor: Yuzo DAIGO
  • Publication number: 20220143742
    Abstract: A magnesium clad material 100 includes, when a cross-section thereof cut in a thickness direction thereof is observed, a Mg layer (11), a first Al layer (12) made of pure Al or an Al alloy, and a first joint (13) made of pure Cu or a Cu alloy and arranged between the Mg layer and the first Al layer, and the magnesium clad material has a 0.2% proof stress of 150 MPa or more as measured in a tensile test under a room temperature atmosphere.
    Type: Application
    Filed: March 6, 2020
    Publication date: May 12, 2022
    Applicant: HITACHI METALS, LTD.
    Inventors: Satoshi OKURA, Ryoji INOUE
  • Publication number: 20220143690
    Abstract: To provide a Ni-based corrosion resistant alloy powder suitable for additive manufacturing and a manufacturing method using this powder for manufacturing an additive manufacturing product that has excellent corrosion resistance and few defects. This Ni-based corrosion resistant alloy powder for additive manufacturing has a component composition which contains, in mass %, Cr: 14.5-24.5%, Mo: 12.0-23.0%, Fe: 0.01-7.00%, Co: 0.001-2.500%, Mg: 0.010% or less, N: 0.040% or less, Mn: 0.001-0.50%, Si: 0.001-0.200%, Al: greater than 0-0.50%, Ti: 0.001-0.500%, Cu: 0.250% or less, V: 0.001-0.300%, B: 0.0001-0.0050%, Zr: 0.0001-0.0200% and O: 0.0010-0.0300%, the remainder being Ni and unavoidable impurities; the C, S and P contained as the aforementioned unavoidable impurities include less than 0.05% of C, less than 0.01% of S and less than 0.01% of P, wherein the powder has a particle distribution in which d10 is 15-100 ?m, d50 is 30-250 ?m and d90 is 50-480 ?m.
    Type: Application
    Filed: February 12, 2020
    Publication date: May 12, 2022
    Applicant: HITACHI METALS, LTD.
    Inventors: Yuzo DAIGO, Katsuo SUGAHARA
  • Patent number: 11328840
    Abstract: A high frequency signal transmission cable includes a conductor, an insulator provided over a periphery of the conductor, a plating layer provided over a periphery of the insulator, and a sheath provided over a periphery of the plating layer. A crack suppressing layer is provided between the insulator and the plating layer, in such a manner as to remain in contact with the insulator while being provided with the plating layer over an outer surface of that crack suppressing layer. The crack suppressing layer is composed of a resin film to suppress the occurrence of a cracking in the plating layer by bending while moving in a longitudinal direction of the cable relative to a bending of the insulator.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: May 10, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Detian Huang, Takanobu Watanabe, Kimika Kudo
  • Patent number: 11326231
    Abstract: Provided are a Ni-based alloy for hot die having a high high-temperature compressive strength and a good oxidation resistance and being capable of suppressing the deterioration in the working environment and the shape deterioration, and a hot forging die made of the Ni-based alloy for hot die. The Ni-based alloy for hot die comprises, in mass %, W: 7.0 to 15.0%, Mo: 2.5 to 11.0%, Al: 5.0 to 7.5%, Cr: 0.5 to 3.0%, Ta: 0.5 to 7.0%, S: 0.0010% or less, one or two or more selected from rare-earth elements, Y, and Mg in a total amount of 0 to 0.020%, and the balance of Ni with inevitable impurities. In addition to the composition described above, one or two elements selected from Zr and Hf can further be contained in a total amount of 0.5% or less.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: May 10, 2022
    Assignee: HITACHI METALS, LTD.
    Inventors: Shogo Suzuki, Tomonori Ueno, Chuya Aoki
  • Patent number: 11327510
    Abstract: A multi-chamber rate-of-change flow meter system and methods for operating the same are disclosed. The multi-chamber rate-of-change flow meter system includes a collection of N chambers, means for drawing a gas into or out of the collection of N chambers, N pressure sensors corresponding one of the N chambers, and means for redistributing the gas among the chambers. A measurement module is coupled to the pressure sensors to obtain a rate of change of pressure in each of the chambers due to the redistribution of the gas and calculate a flow rate of the gas flowing into or out of the collection of N chambers based upon the rate of change of pressure in each of the chambers.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: May 10, 2022
    Assignee: Hitachi Metals, Ltd.
    Inventor: Alexei V. Smirnov