Patents Assigned to Kabushiki Kaisha Kobe Seiko Sho
  • Publication number: 20210246924
    Abstract: The present invention relates to a method for joining a plated steel sheet, in which at least one of a first steel sheet and a second steel sheet is a plated steel sheet, and the first and second steel sheets overlapped with each other are subjected to an arc spot welding. The method includes press-working the first steel sheet into a desired shape and at the same time forming a linear groove on an overlapping surface with the second steel sheet of the first steel sheet, overlapping the first and second steel sheets, and setting a welding torch with the groove as a target position, and performing the arc spot welding so as to overlap the groove when viewed from a direction perpendicular to the overlapping surface.
    Type: Application
    Filed: May 31, 2019
    Publication date: August 12, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventor: Reiichi SUZUKI
  • Publication number: 20210245225
    Abstract: A method for driving a piercing element includes: preparing a plate material, the piercing element, a preceding punch, and a die; arranging the plate material on a hole portion of the die; arranging the piercing element and the preceding punch in order downward from above on the plate material and on a position corresponding to the hole portion; punching the plate material via the preceding punch by pressing the piercing element downward; dropping a punched piece downward from the hole portion; following the punching of the plate material, driving the piercing element to be embedded in the plate material and causing the plate material to bite a constricted portion; and dropping the preceding punch downward from the hole portion.
    Type: Application
    Filed: August 28, 2018
    Publication date: August 12, 2021
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventor: Takayuki KIMURA
  • Publication number: 20210239403
    Abstract: This stacked heat exchanger is provided with: a high temperature layer that comprises a plurality of channels into which a high temperature-side fluid is introduced; and a low temperature layer that is superposed on the high temperature layer and comprises a plurality of channels into which a low temperature-side fluid is introduced, said low temperature-side fluid being at a temperature that is lower than the temperature of the high temperature-side fluid. Each one of the plurality of channels of the low temperature layer has: an upstream-side part in which at least some of the low temperature-side fluid evaporates by being heated by the high temperature-side fluid that flows within the high temperature layer; and a downstream-side part in which the low temperature-side fluid that has evaporated in the upstream-side part is heated by the high temperature-side fluid that flows within the high temperature layer.
    Type: Application
    Filed: May 21, 2019
    Publication date: August 5, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventor: Koji NOISHIKI
  • Publication number: 20210237339
    Abstract: Provided is a strand from which a modeled object with excellent impact strength can be easily formed by a 3D printer and a modeled object with excellent impact strength. A strand of the present disclosure is a strand used as a raw modeling material for a 3D printer, the strand including a base material containing thermoplastic resin as a main component and one or more fibers or fiber bundles impregnated in the base material and extending in an axial direction and the strand being twisted along the axial direction.
    Type: Application
    Filed: December 28, 2020
    Publication date: August 5, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventor: Makoto TAKENAKA
  • Publication number: 20210237193
    Abstract: A resistance spot welded joint of an aluminum material is obtained by joining a stack of a plurality of aluminum materials by spot welding. A nugget formed by the spot welding includes a solidified part of the aluminum materials and a shell having a different solidification structure from the solidified part. The shell is formed annularly in a cross-section of the nugget in a stacking direction of the aluminum materials. The solidified part and the shell are alternately arranged from an outer edge of the nugget toward a nugget central part.
    Type: Application
    Filed: April 19, 2019
    Publication date: August 5, 2021
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), NADEX CO., LTD.
    Inventors: Takuro AOKI, Seiji KATAYAMA, Yoshinori OTA, Kenji SAHASHI
  • Publication number: 20210229182
    Abstract: A method for manufacturing an additively-manufactured object in which deposition is performed by melting and solidifying a metal depending on three-dimensional shape data of a target shape, includes: acquiring the three-dimensional shape data; creating a deposition plan in which a formation track and a heating condition of the metal are determined; determining a difference between a shape of the additively-manufactured object that thermally contracts by cooling after deposition and a shape of the three-dimensional shape data by an operation; modifying the deposition plan until the difference falls within a predetermined allowable range; and additively manufacturing the additively-manufactured object based on the deposition plan in which the difference falls within the allowable range.
    Type: Application
    Filed: May 31, 2019
    Publication date: July 29, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Takemasa YAMASAKI, Tatsuya FUJII, Shinji SATO, Takeshi YAMADA
  • Publication number: 20210229156
    Abstract: A method for manufacturing a press-molded article includes: preparing a patchwork blank in which a thickened portion is formed by welding patchwork to basework; bending only the thickened portion of the patchwork blank; and bending a portion other than the thickened portion in a step different from bending of the thickened portion.
    Type: Application
    Filed: May 13, 2019
    Publication date: July 29, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kazuki SAKAMOTO, Kenichi WATANABE, Dongyong SHI
  • Publication number: 20210222706
    Abstract: Provided is a compressor including: a compressor body that has a motor and compresses air; an aftercooler for cooling the compressed air supplied from the compressor body; a dryer for dehumidifying the compressed air flowing out from the aftercooler; a drain discharge valve for discharging a drain from the dryer; a first pressure sensor for measuring air pressure downstream of the aftercooler; and a control device having a rotation-speed adjusting unit that drives the motor at second acceleration smaller than first acceleration, the first acceleration being rated acceleration of the motor, when a pressure value measured by the first pressure sensor is less than a first threshold value predetermined at startup of the motor.
    Type: Application
    Filed: July 3, 2019
    Publication date: July 22, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Katsunori HAMADA, Shuto YAKUBO, Akira HOSHIKAWA
  • Publication number: 20210216048
    Abstract: A vibration suppression device that suppresses vibration of an operation unit in a mechanical system having a natural vibration mode including the operation unit, an actuator unit that operates the operation unit, and an elastic body that couples the operation unit and the actuator unit, the vibration suppression device including a generation means for generating a drive signal for driving the actuator unit, an estimation means for estimating a measurement amount related to the mechanical system, a correction means for correcting the drive signal generated by the generation means on the basis of the measurement amount estimated by the estimation means, and a change means for changing a gain used by the estimation means so that an influence of an increase in a modeling error becomes small in a period in which the modeling error of the mechanical system increases.
    Type: Application
    Filed: August 19, 2019
    Publication date: July 15, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Yoshiharu NISHIDA, Mami YOMODA, Naoki KIDA
  • Publication number: 20210210118
    Abstract: A recording layer for an optical data recording medium is described. Recording is performed by irradiating the recording layer with a laser beam. The recording layer contains a W oxide, an Fe oxide, and at least one of a Ta oxide and a Nb oxide. The recording layer contains 10-60 atomic % of Fe and a total of 3-50 atomic % of Ta and Nb relative to the total metal atoms therein.
    Type: Application
    Filed: May 22, 2019
    Publication date: July 8, 2021
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventor: Yuki TAUCHI
  • Publication number: 20210198868
    Abstract: A hydraulic drive apparatus includes a boom flow rate control valve, a target boom cylinder speed calculation part calculating a target boom cylinder speed for making a construction surface by a bucket closer to a target construction surface based on the cylinder speed of a boom cylinder and the like, and a boom flow rate operation part. The boom flow rate operation part operates the boom flow rate control valve to make a boom cylinder supply flow rate be a target supply flow rate corresponding to the target boom cylinder speed when the target boom cylinder speed direction coincides with a cylinder thrust direction, and operates the boom flow rate control valve to make the boom cylinder discharge flow rate be a target discharge flow rate corresponding to the target boom cylinder speed when the target boom cylinder speed direction is opposite to the cylinder thrust direction.
    Type: Application
    Filed: July 24, 2019
    Publication date: July 1, 2021
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.), KOBELCO CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Satoshi MAEKAWA, Toshihiro NOGI, Sho FUJIWARA
  • Publication number: 20210199392
    Abstract: A heat exchanger includes a heat exchanger body having a plurality of layer portions each having a plurality of flow paths, and having a configuration in which adjacent layer portions are joined to each other, an inflow header being configured that a fluid is introduced into the inflow header to flow into the plurality of flow paths, an outflow header being configured that a fluid flowing through the plurality of flow paths merges, a cover portion covering all joint portions of the adjacent layer portions or all joint portions of components of layer portions, the joint portions exposed on an outer surface of the heat exchanger body at a portion other than a portion where the inflow header and the outflow header are disposed, and a lead-out portion connected to the cover portion and forming an internal flow path communicating with a space between the cover portion and the heat exchanger body. The lead-out portion is configured to emit a fluid to a predetermined region set in advance.
    Type: Application
    Filed: September 3, 2019
    Publication date: July 1, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kenichiro MITSUHASHI, Takashi KOGUSHI, Masato YAMADA, Susumu TERADA, Koji NOISHIKI
  • Publication number: 20210187814
    Abstract: A screw extruder for extruding a kneaded material, includes: a pair of screws; a casing that houses the pair of screws and includes a supply port; and a roller-die. Each of the screws includes a shaft portion, and a spiral flight portion. The flight portion is formed into a shape in which a radial distance between the surface of the shaft portion and a tip of the flight portion decreases gradually toward a downstream end in an extrusion direction of a kneaded material. The casing has a tapered shape. Within a range between a downstream end of the supply port and a downstream end of the flight portion, a clearance between a top portion of the flight portion and an inner wall surface of the casing at the downstream end of the supply port is larger than a clearance at any other part.
    Type: Application
    Filed: May 31, 2019
    Publication date: June 24, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kosuke HIGASHI, Kazuhisa FUKUTANI
  • Publication number: 20210178502
    Abstract: A method for producing a built-up object by melting and solidifying a filler metal to form weld beads on a base surface along a track for a torch and form the built-up object formed by the weld beads is provided. The built-up object includes a bead formation portion where a gravitational influence is maximum. The method includes: forming a supporting bead having a higher viscosity during weld-bead formation than other weld beads in the bead formation portion; and forming the other weld beads overlying the supporting bead.
    Type: Application
    Filed: October 30, 2018
    Publication date: June 17, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Takemasa YAMASAKI, Tatsuya FUJII, Shinji SATO, Takeshi YAMADA
  • Publication number: 20210180160
    Abstract: Provided are an aluminum alloy sheet for automotive structural member which is excellent and well-balanced in strength, formability, and crushability, an automotive structural member, and a method for manufacturing an aluminum alloy sheet for automotive structural member. An aluminum alloy sheet for automotive structural member is an Al—Mg—Si-based aluminum alloy sheet containing, in mass %, Mg: 0.4% or more and 1.0% or less, Si: 0.6% or more and 1.2% or less, and Cu: 0.6% or more and 1.3% or less with the remainder being Al and inevitable impurities and having an earing ratio of ?13.0% or less.
    Type: Application
    Filed: November 24, 2020
    Publication date: June 17, 2021
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Tomoki HOSOKAWA, Takahiko NAKAMURA
  • Publication number: 20210170471
    Abstract: An electromagnetic forming method includes: a step of setting pipe periphery members at plural positions along an axial direction of a pipe material; a step of setting a coil unit on a side of one end, in the axial direction, of the pipe material, the coil unit including a conductor wound portion, conductor extension portions, and a resin-made conductor support portion; a step of setting a support member on a side of the other end, in the axial direction, of the pipe material; a coil unit holding step; a coil setting step; and a swaging step. The coil setting step and the swaging step are performed in this order at each of the plural positions of the pipe material while the coil unit is kept held by the support member.
    Type: Application
    Filed: February 28, 2019
    Publication date: June 10, 2021
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryusuke HIOKI, Yoshihaya IMAMURA
  • Publication number: 20210164089
    Abstract: Provided is a film formation method that includes: an etching step of etching the surface of the substrate by bringing inert gas ions into collision with the surface of the substrate, the inert gas ions generated in a chamber accommodating the substrate; an implantation step of bringing inert gas ions into collision with metal particles deposited on the surface of the substrate to thereby hit the metal particles into the surface of the substrate while bringing the inert gas ions into collision with a metal target to thereby cause the metal particles to sputter out of the metal target and depositing the metal particles on the surface of the substrate etched in the etching step; and a film formation step of forming the film on the surface of the substrate into which the metal particles have been hit in the implantation step.
    Type: Application
    Filed: October 3, 2018
    Publication date: June 3, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Satoshi HIROTA, Koichiro AKARI
  • Publication number: 20210164618
    Abstract: A method for controlling a compression system that includes a compressor for compressing gas, a first on-off valve provided on a suction flow passage connected to a suction side of the compressor, a pressure reducing valve provided on a portion of the suction flow passage upstream of the first on-off valve, a second on-off valve provided on a discharge flow passage connected to a discharge side of the compressor, a bypass flow passage connecting the suction flow passage and the discharge flow passage to detour the compressor, and a bypass valve provided on the bypass flow passage, includes closing the first on-off valve while driving the compressor, opening the bypass valve simultaneously with or after the closing of the first on-off valve, closing the second on-off valve after the opening of the bypass valve, and continuing to drive the compressor after the closing of the second on-off valve.
    Type: Application
    Filed: October 14, 2020
    Publication date: June 3, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Koichiro HASHIMOTO, Masashi TAKANO, Takuro UBA, Takayuki FUKUDA, Kenji NAGURA
  • Publication number: 20210156371
    Abstract: A piston ring includes a first ring portion which is fitted onto an outer circumferential portion of a piston and which is capable of sliding relative to an inner wall surface of a cylinder, and a second ring portion which is fitted onto the outer circumferential portion of the piston, arranged side-by-side with the first ring portion in the axial direction, and which is capable of sliding relative to the inner wall surface of the cylinder. The second ring portion is fitted onto the outer circumferential portion of the piston in such a way as to be positioned on a side opposite to a compression chamber inside the cylinder, relative to the first ring portion, and has a greater hardness than the first ring portion has.
    Type: Application
    Filed: April 8, 2019
    Publication date: May 27, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Naofumi KANEI, Tomohiro OTSUKA, Hirotaka ITO, Hiroaki NII
  • Publication number: 20210156765
    Abstract: A rim replacing mechanism includes a pressing member including a spring and a body having a pressing surface applying downward pressing force to an upper surface of an upper rim, and an actuator configured to vertically displace the body within a range including an upper position and a lower position. As to the lower position, the body is configured to shift downward toward the lower position while the pressing surface of the body is applying the downward pressing force to the upper surface of the upper rim, to dispose the upper surface of the upper rim to be separated downward from a lower surface of an upper spindle. The spring is configured to apply downward pressing force to the body disposed at the lower position.
    Type: Application
    Filed: March 15, 2019
    Publication date: May 27, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Takashi SUMITANI, Yu SUMIMOTO