Patents Assigned to Kabushiki Kaisha Kobe Seiko Sho
  • Publication number: 20200198041
    Abstract: An arc-tracking welding method according to the present invention is an arc-tracking welding method in a consumable-electrode-type welding apparatus provided with a weaving function for swinging a torch in the welding direction, wherein a welding current and a welding voltage to be supplied to a consumable electrode include high-frequency components. A change in resistance value resulting from a fluctuation in electrode height is detected from the welding current and the welding voltage during welding. Then, a shift of a weld line is detected from information about the detected resistance value and both end positions of a weaving amplitude.
    Type: Application
    Filed: March 10, 2017
    Publication date: June 25, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Yoshiharu NISHIDA, Tsutomu ONE, Toshihiko NISHIMURA
  • Publication number: 20200189126
    Abstract: A mechanical stopper device wherein a fixed body includes a fixing-side stopper, including: a lever that can swing about a supporting shaft provided to the fixed body; and a pair of elastic bodies, attached to the fixed body, on both sides in the lever swinging direction, and which can contact with both side surfaces of the lever. Further, a rotating body includes a stopper pin that can be in contact with both the side surfaces of the lever. The ratio between a distance (a) from a supporting point of the lever to a contact position where the lever and the stopper pin are in contact with each other, and a distance (b) from the supporting point of the lever to a contact position where the lever and the elastic bodies are in contact with each other is 1.05?a/b?2.30, and thickness (D) of the elastic bodies is 20 mm?D?40 mm.
    Type: Application
    Filed: September 8, 2017
    Publication date: June 18, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Taichi IGARASHI, Yuki SHIKA, Motoaki MURAKAMI, Yasuharu SAKURAI, Tatsuji MINATO
  • Publication number: 20200190619
    Abstract: Disclosed is a high-strength sheet containing: C: 0.15% by mass to 0.35% by mass, a total of Si and Al: 0.5% by mass to 3.0% by mass, Al: 0.01% by mass or more, N: 0.01% by mass or less, Mn: 1.0% by mass to 4.0% by mass, P: 0.05% by mass or less, and S: 0.01% by mass or less, with the balance being Fe and inevitable impurities, wherein the steel structure satisfies that: a ferrite fraction is 5% or less, the total fraction of tempered martensite and tempered bainite is 60% or more, the amount of retained austenite is 10% or more, MA has an average size of 1.0 ?m or less, retained austenite has an average size of 1.0 ?m or less, retained austenite having a size of 1.5 ?m or more accounts for 2% or more of the total amount of retained austenite, and the amount of solute nitrogen in a steel sheet is 0.002% by mass or less.
    Type: Application
    Filed: May 22, 2018
    Publication date: June 18, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Hirokazu NATSUMEDA, Toshio MURAKAMI, Kenji SAITO, Tadao MURATA
  • Publication number: 20200182408
    Abstract: A hydrogen station operation method capable of adjusting pressure in a reservoir to the pressure suitable for liquid hydrogen replenishment while cutting hydrogen waste is for replenishing liquid hydrogen into the reservoir in a hydrogen station including: a gasification path partially gasifying liquid hydrogen out of the reservoir and returning it; and a gas delivery path delivering gasified hydrogen in the reservoir into a path between a vaporizer and a compressor or the vaporizer, when the remainder of liquid hydrogen in the reservoir becomes a first threshold or less, by reducing the liquid hydrogen amount flowing through the gasification path by a valve therein, reducing the gasification amount of liquid hydrogen in the reservoir, and increasing the hydrogen gas amount delivered through the gas delivery path from the reservoir by a valve therein, pressure in the reservoir is reduced, thereby performing operation where suction pressure of the compressor is reduced.
    Type: Application
    Filed: September 27, 2019
    Publication date: June 11, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kenji NAGURA, Tomohiro OOTSUKA
  • Publication number: 20200180072
    Abstract: A joint body includes first and second metal members and a joint portion including a welded portion where the first and second metal members are joined together, the welded portion having a line shape. The joint portion includes first and second longitudinal portions and a plurality of connecting portions. The first longitudinal portion has first intersecting portions arranged in a first direction and extends in the first direction. The second longitudinal portion has second intersecting portions arranged in the first direction and extends in the first direction. The welded portion intersects itself at the first and second intersecting portions. The connecting portions are arranged in the first direction. The connecting portions extend in a first direction and connect the first and second longitudinal portions.
    Type: Application
    Filed: August 3, 2018
    Publication date: June 11, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kenichi WATANABE, Kazuya YASUI, Dongyong SHI, Takayuki KIMURA, Liang CHEN, Masao HADANO, Reiichi SUZUKI
  • Publication number: 20200180062
    Abstract: A plurality of welding torches, which are disposed in a welding device and are made movable in three-dimensional directions, are provided with welding wires that differ in composition and diameter from each other. When welding is performed in the horizontal direction, an arc is generated by at least two of the welding torches to form a bead while the welding wires are being fed. When welding is performed in the vertical direction, the arc is generated by any one welding torch of the two welding torches to form a bead while the welding wire is being fed. Thus, a steel sheet to which an anti-corrosion material has been applied can be welded continuously with high quality and high-efficiency in a horizontal orientation and vertical orientation.
    Type: Application
    Filed: April 12, 2017
    Publication date: June 11, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Reiichi SUZUKI, Yimin YUAN
  • Publication number: 20200180007
    Abstract: In a method for joining members, a first tube, and a second tube capable of being inserted into the first tube are prepared. The second tube is inserted in a tube hole of the first tube in an axial direction of the first tube. The second tube is radially expanded toward the first tube so that the first tube and the second tube are joined by press-fitting. The first tube is made of a material having a spring back amount larger than a spring back amount of the second tube.
    Type: Application
    Filed: May 29, 2018
    Publication date: June 11, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Yasuhiro MAEDA, Kenichi WATANABE, Takayuki KIMURA
  • Publication number: 20200164562
    Abstract: A rubber sheet monitoring apparatus (1) comprises a first imaging unit (11), a second imaging unit (2), a first generation unit (142) and a second calculation unit (146). The first imaging unit successively acquires images of a first optical cutting edge (CL1) formed on a front surface of a rubber sheet (6). The second imaging unit successively acquires images of a second optical cutting edge (CL2) formed on a back surface of the rubber sheet. The first generation unit performs, for each of the successively acquired images of the first optical cutting edge, generation of first data (D1) representing height variation of a widthwise cross-sectional edge of the rubber sheet using the image of the first optical cutting edge, and performs, for each of the successively obtained images of the second optical cutting edge, generation of second data (D2) representing height variation of a widthwise cross-sectional edge of the rubber sheet using the image of the second optical cutting edge.
    Type: Application
    Filed: April 9, 2018
    Publication date: May 28, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Eiji TAKAHASHI, Chitaka MANABE, Akira KONISHI, Hodaka MIURA
  • Publication number: 20200168248
    Abstract: The present invention relates to a read-only optical information recording medium in which at least one reflection film and at least one light transmission layer are laid in order on a substrate and from which information is reproduced by blue laser. The reflection film includes a metal oxide containing Sn and Zn or a metal oxide containing In. The reflection film has a film thickness of 20 nm or more and 70 nm or less.
    Type: Application
    Filed: April 24, 2018
    Publication date: May 28, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventor: Yuki TAUCHI
  • Publication number: 20200164419
    Abstract: A door beam including an aluminum alloy extrusion extended in a longitudinal direction and having a pair of webs and a pair of flanges to be positioned on an inside and an outside in a vehicle width direction. The pair of webs connect the pair of flanges at joint portions of each of the pair of webs such that the pair of webs and the pair of flanges form a closed cross section in a direction perpendicular to the longitudinal direction, and each of the pair of webs has a welded portion in a vicinity of a neutral axis passing through a centroid of the closed cross section and parallel to the pair of flanges.
    Type: Application
    Filed: January 29, 2020
    Publication date: May 28, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Shinya MORITA, Tsunetake TSUYOSHI
  • Patent number: 10655505
    Abstract: A compressor compresses air in such a manner that a motor is driven by renewable energy. An accumulator tank stores the air thus compressed. An expander is driven by the compressed air. A generator is mechanically connected to the expander. A first heat exchanger recovers compressed heat. A heat medium tank that stores a heat medium. A second heat exchanger that heats the compressed air. A first pump adjusts an amount of the heat medium to be supplied to the first heat exchanger. A control device controls the first pump to adjust the amount of heat medium to be supplied to the first heat exchanger so as to maintain the heat medium, which is stored in the heat medium tank, at a predetermined first temperature.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: May 19, 2020
    Assignee: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Masaki Matsukuma, Hiroki Saruta, Kanami Sakamoto
  • Publication number: 20200153275
    Abstract: A compressed air storage power generation device 1 is provided with: a motor 11 which is driven using input electric power; a compressor 10 which is mechanically connected with the motor and compresses air; a plurality of accumulator tank groups 20A, 20B, 20C, 20D which are in fluid connection with the compressor and in which compressed air obtained by the compressor is stored; a plurality of pressure sensors 21A, 21B, 21C, 21D which are provided in the accumulator tank groups and which measure pressures of the accumulator tank groups; an expander 30 which is in fluid connection with the accumulator tank groups and driven by means of compressed air supplied from the accumulator tank groups; a generator 31 which is mechanically connected with the expander; and a control unit 40 which, on the basis of the pressures of the respective accumulator tank groups measured by means of the pressure sensors, determines the order of the accumulator tank groups in which to store compressed air for charging, and determines
    Type: Application
    Filed: April 6, 2018
    Publication date: May 14, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Masaki MATSUKUMA, Hiroki SARUTA, Yuji MATSUO, Kanami SAKAMOTO
  • Publication number: 20200149250
    Abstract: Provided are an energy regeneration device which can regenerate energy of a working fluid discharged from an actuator while controlling a flow rate of the working fluid, and a work machine including the foregoing device. The regeneration device (100) includes a boom cylinder (20), an inertial fluid container (102), an oil tank (110), an accumulator (105), a low-pressure-side opening/closing device (103), and a high-pressure-side opening/closing device (104). A calculation unit (151) calculates a duty ratio for opening/closing the low-pressure-side opening/closing device (103) and the high-pressure-side opening/closing device (104) in accordance with a desired flow rate of a working fluid discharged from the boom cylinder (20).
    Type: Application
    Filed: August 9, 2017
    Publication date: May 14, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd)
    Inventors: Naoki SUGANO, Satoshi MAEKAWA
  • Publication number: 20200147658
    Abstract: Provided is a method for cleaning an arbitrary fluid channel in a fluid flow device including a channel-forming body forming a plurality of fluid channels, a first header, and a second header. The method includes opening a cleaning-target channel included in the plurality of fluid channels and closing a non-cleaning-target channel which is the other fluid channel; and supplying a cleaning liquid to a cleaning-liquid supply header selected from the first header and the second header in a state where the non-cleaning-target channel is closed to cause the cleaning liquid to flow only through the cleaning-target channel.
    Type: Application
    Filed: June 26, 2018
    Publication date: May 14, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Akira MATSUOKA, Koji NOISHIKI, Tomohiro OZONO
  • Publication number: 20200147671
    Abstract: A method for manufacturing a different material joined member comprises: a step of punching a shaft portion of a steel rivet into a light alloy material provided with a solid resin layer on at least one surface thereof; a step of causing a shaft portion tip of the rivet to protrude from the solid resin layer on the light alloy material; a step of laying a steel material over the surface of the light alloy material on the side where the shaft portion tip of the rivet protrudes, with the solid resin layer therebetween; and a step of welding the shaft portion of the rivet with the steel material. Instead of punching the rivet, a hole may be drilled in the light alloy material provided with the solid resin layer together with the solid resin layer, the steel material may be laid over via the solid resin layer, and the shaft portion of the steel rivet may be inserted into the hole.
    Type: Application
    Filed: June 15, 2018
    Publication date: May 14, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventor: Tetsu IWASE
  • Publication number: 20200139420
    Abstract: An electromagnetic forming device for an aluminum tube member, the electromagnetic forming device including: a jig plate in which a support member that has a through hole has been fixed to a substrate; and a tube insertion mechanism that inserts a tube member into the through hole in the support member. The electromagnetic forming device also includes: a coil unit that has an electromagnetic-forming coil part; a coil movement mechanism that supports the coil unit; a current supply part that supplies current for electromagnetic forming to the electromagnetic-forming coil part; and a jig plate transport mechanism that transports the jig plate from a tube insertion stage ST1 to a tube expansion stage ST2.
    Type: Application
    Filed: July 12, 2018
    Publication date: May 7, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe-Steel, Ltd.)
    Inventors: Yoshihaya IMAMURA, Takayoshi SUGISAKI, Chieko IMAI
  • Publication number: 20200141885
    Abstract: A method for measuring the stress of a concave section of a test subject which comprises a metal and has a surface and a concave section, the method including: a detection step for detecting, using a two-dimensional detector, a diffraction ring of diffracted X-rays which is formed by causing X-rays to be incident on the concave section and to be diffracted by the concave section; and a calculation step for calculating the stress of the concave section on the basis of the detection results during the detection step. Therein, the detection step involves causing X-rays to be incident on each of a plurality of sites inside the concave section of the test subject, and detecting, using a two-dimensional detector, the diffraction ring formed by the diffraction of the X-rays by the concave section.
    Type: Application
    Filed: April 6, 2018
    Publication date: May 7, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Hiroyuki TAKAMATSU, Toshihide FUKUI, Mariko MATSUDA, Tatsuhiko KABUTOMORI
  • Publication number: 20200139910
    Abstract: A structural member includes an inner member and an outer member formed of a material different from that of the inner member, the outer member being positioned outside the inner member so as to surround the inner member and including a first adjacent surface adjacent to an outer surface of the inner member, wherein an insulator is disposed between the first adjacent surface and a second adjacent surface of the inner member, the second adjacent surface being adjacent to the first adjacent surface.
    Type: Application
    Filed: April 20, 2017
    Publication date: May 7, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Yasuhiro MAEDA, Toru HASHIMURA, Ryohei YUKISHIGE, Akihiko TATSUMI
  • Publication number: 20200130048
    Abstract: The objective of the present invention is to improve the rigidity of a vehicle knuckle made from an aluminum alloy with respect to a force directed from the outside to the inside in the width direction of a vehicle. A vehicle knuckle (11) is provided with a bearing support portion (111), a knuckle upper portion (113) and a knuckle lower portion (112). With the vehicle knuckle (11) in a position fitted to a vehicle main body, the knuckle upper portion (113) has a shape in which, if the knuckle upper portion (113) is divided equally into five or more regions in a vertical direction, and the center of the bearing support portion (111) is fixed and a horizontal load F is applied to a knuckle upper end portion (115) from the outside toward the inside in the width direction of the vehicle, the minimum value of a value obtained by dividing the strain energy in each of the five or more regions other than a first region (11A) by the mass of the corresponding region is at least equal to 0.
    Type: Application
    Filed: August 3, 2018
    Publication date: April 30, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Hiroaki HOSOI, Kouki SUGINO, Keiji YAZAKI, Teppei HOSHINO
  • Publication number: 20200130086
    Abstract: A gas shielded arc welding method includes welding a steel sheet with a tensile strength of 780 MPa or more using a shielding gas containing Ar in an amount of 92 vol. % to 99.5 vol. %. In the gas shielded arc welding method, a value calculated from the following expression (1) is 0.20 or more: {?v/(D/2)2}×10?{(100?CAr)×I/v}×0.1 . . . (1), where CAr represents an Ar content (vol. %) in the shielding gas, D represents an inner diameter (mm) of a nozzle from which the shielding gas is supplied, v represents a welding speed (cm/min), and I represents a welding current (A).
    Type: Application
    Filed: October 23, 2019
    Publication date: April 30, 2020
    Applicants: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), Mazda Motor Corporation
    Inventors: Ryota Yamasaki, Kazuya Ikai, Masaaki Tanaka, Mitsugi Fukahori