Patents Assigned to Kabushiki Kaisha Kobe Seiko Sho
  • Publication number: 20220062792
    Abstract: Provide is a phase separator having a phase separation function and a function of promoting mutual contact between the first liquid and the second liquid in a compact structure. The phase separator includes a main body container, a partition member, and a mixed-liquid introduction part. The body container defines a storage space for the mixed liquid. The partition member partitions the storage space into a plurality of horizontally arranged spaces including a mutual contact space allowing the first and second liquids to flow vertically while being in contact with each other, and a phase separation space for separating the mixed liquid into a first liquid phase and a second liquid phase. The mixed-liquid introduction part allows introduction of the mixed liquid through the mixed-liquid introduction part to make the mixed liquid flow from the introduction end toward the discharge end of the partition member through the mutual contact space.
    Type: Application
    Filed: August 16, 2021
    Publication date: March 3, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventor: Akira MATSUOKA
  • Publication number: 20220056559
    Abstract: To provide an Al—Mg—Si-based aluminum alloy sheet excellent in formability with excellent breaking elongation and work hardenability. An Al—Mg—Si-based aluminum alloy sheet excellent in formability contains Mg: 0.3 mass % or more and 0.45 mass % or less and Si: 0.6 mass % or more and 1.75 mass % or less with the balance being Al and inevitable impurities, in which, when content of the Mg is expressed [Mg] in terms of mass % and content of the Si is expressed [Si] in terms of mass %, [Si]/[Mg] is more than 2.5, a height of a first exothermic peak appearing in a temperature range of 210° C. or above and below 260° C. in a differential scanning thermal analysis curve is 20 ?W/mg or more, and a height of a second exothermic peak appearing in a temperature range of 260° C. or above and 370° C. or below in a differential scanning thermal analysis curve is 18 ?W/mg or more.
    Type: Application
    Filed: August 13, 2021
    Publication date: February 24, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Shiwei KANG, Ryutaro AKIYOSHI
  • Publication number: 20220048235
    Abstract: There is provided a die plate, a resin machine, and a method of heating nozzles of the die plate that can suppress temperature unevenness of the nozzles and increase the temperature rise performance of the nozzles. The die plate includes a nozzle group including a plurality of nozzles through which molten resin passes, and a heating medium guidance part that guides a heating medium for heating a nozzle wall of each nozzle. The heating medium guidance part includes an inlet that receives the heating medium, an outlet that discharges the heating medium from a heating medium channel, and a guidance wall that defines a heating channel that causes the inlet and the outlet to be in communication with each other together with an outer peripheral surface of the nozzle wall of each of the plurality of nozzles.
    Type: Application
    Filed: July 28, 2021
    Publication date: February 17, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Takahiro SHINOZAKI, Shin IWASAKI
  • Publication number: 20220042650
    Abstract: The gas supply apparatus is installed in a site of a facility for replenishing hydrogen gas. The gas supply apparatus includes: a gas treatment unit for treating the hydrogen gas; a housing including a gas unit accommodation part fix accommodating the gas treatment unit; and a duct part for allowing the air to flow out of or into the gas unit accommodation part. The housing includes a side section and a top section each having a barrier member. The duct part includes an inner opening section opened horizontally to the gas unit accommodation part, a passage section joining the inner opening section, and an outer opening section causing the passage section to open to an outside of the housing. The duct part has a barrier member.
    Type: Application
    Filed: July 14, 2021
    Publication date: February 10, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Daisuke WADA, Akira MATSUOKA, Naofumi KANEI
  • Patent number: 11241736
    Abstract: The present invention relates to a powder mixture for iron-based powder metallurgy which is obtained by mixing an iron-based powder and at least one kind of powders selected from the group consisting of a Ca—Al—Si-based composite oxide powder and a Ca—Mg—Si-based composite oxide powder, in which with a peak height of a main phase exhibiting the highest peak intensity by X-ray diffraction as 100, the composite oxide powder has a relative height of 40% or less, with respect to the main phase, of a peak height of a second phase having the second highest peak intensity.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: February 8, 2022
    Assignee: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)
    Inventor: Nobuaki Akagi
  • Publication number: 20220032388
    Abstract: A welding power source is configured to supply a welding current to a wire as a consumable electrode. The welding power source includes a controller configured to change the welding current based on a position of a distal end of the wire a distance from which to a surface of a base metal varies periodically, in a case where the distal end of the wire is fed toward the base metal with periodical switching between a forward feeding period and a reverse feeding period.
    Type: Application
    Filed: September 24, 2019
    Publication date: February 3, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Shogo NAKATSUKASA, Hiroshi HASHIMOTO, Yoshiaki KITAMURA, Ryo TODA
  • Publication number: 20220016725
    Abstract: A joint structure, includes: a first member including a high tensile strength steel; and a second member including a high tensile strength steel and superposed on the first member, the first member and the second member being resistance welded to each other, in which a gap between the first member and the second member is between 0 mm and 3 mm, a nugget is not formed at a joint portion between the first member and the second member, or when the nugget is formed at the joint portion between the first member and the second member, a diameter D1 of the nugget satisfies D1<5 mm, and a decarburized layer is provided on at least one of a superposition surface of the first member, on which the second member is superposed, and a superposition surface of the second member, on which the first member is superposed.
    Type: Application
    Filed: September 19, 2019
    Publication date: January 20, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Kyohei MAEDA, Reiichi SUZUKI
  • Publication number: 20220016734
    Abstract: A Ni-based alloy flux cored wire includes a Ni-based alloy outer sheath and a flux with which the Ni-based alloy outer sheath is filled, and includes, per a total mass of the wire, Ni: 45 mass % to 75 mass %, Cr: 20 mass % or less, Mo: 10 mass % to 20 mass %, Fe: 10.0 mass % or less, TiO2: 3 mass % to 11 mass %, Ca: 0.01 mass % to 2.0 mass %, F: 1.0 mass % or less (including 0 mass %), and Nb: less than 0.5 mass % (including 0 mass %).
    Type: Application
    Filed: April 6, 2020
    Publication date: January 20, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Yoshihiko KITAGAWA, Kazuhiro FUKUDA
  • Publication number: 20220009296
    Abstract: A method for displaying an image of a surface of a tire includes: taking an image of a surface of a tire formed with a mark having a protrusion and a recess; acquiring waveform data from the taken image of the surface; creating a histogram from the waveform data; determining, based on the histogram, a first bin threshold to distinguish a surface luminance of the protrusion of the mark, and a second bin threshold to distinguish a surface luminance of the recess of the mark; and displaying the image of the surface of the tire including the mark on a screen by representing a region equal to or higher than the first bin threshold, a region lower than the first bin threshold and higher than the second bin threshold, and a region equal to or lower than the second bin threshold in the histogram in three attributes of color.
    Type: Application
    Filed: November 22, 2019
    Publication date: January 13, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Jumpei FUKUDA, Yasuhiro MATSUSHITA
  • Publication number: 20220009127
    Abstract: Provided is a kneading device that can check a progress of wear of an inner wall face of a kneading chamber provided in a casing without stopping the kneading device. A kneading device includes a sensor-mount space provided in a wall of a casing, a wear detecting sensor of which a detecting section is disposed at a bottom of the sensor-mount space, and a controller that receives a signal output from the wear detecting sensor, the controller including a wear determining unit that determines that wear of an inner wall face of a kneading chamber has progressed based on a change in the signal.
    Type: Application
    Filed: November 20, 2019
    Publication date: January 13, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Yasuaki YAMANE, Hikaru HAMADA
  • Publication number: 20220006321
    Abstract: A compressed air energy storage and power generation apparatus includes an electric motor, a compressor, an accumulator, an expander, a generator, and a controller, in which the compressor includes a first compressor of dynamic type and a second compressor of a positive displacement type, during charge of the apparatus, in a case where variation time of predicted variation power exceeds activation stop time of the first compressor, the controller supports a predicted variation power component by performing a unit number control of the first compressor and performing the unit number control and a rotation speed control of the second compressor, and in a case where the variation time of the predicted variation power is equal to or less than the activation stop time of the first compressor, the controller supports the predicted variation power component by performing the unit number control and the rotation speed control of the second compressor.
    Type: Application
    Filed: November 20, 2019
    Publication date: January 6, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventor: Yohei KUBO
  • Publication number: 20210404496
    Abstract: A joint structure formed by resistance welding a plurality of superposed steel sheets includes a high tensile strength steel sheet having a tensile strength of at least 590 MPa and containing a chemical component having a carbon equivalent Ceq of at least 0.53%. The high tensile strength steel sheet has a decarburized layer between a base plate and a galvanized layer formed on at least one of a surface on a superposition surface side and a surface on a welding electrode side of the high tensile strength steel sheet, or has a decarburized layer on a superposition surface of the high tensile strength steel sheet adjacent to a galvanized layer of a galvanized steel sheet to be superposed. The decarburized layer has a thickness of at least 5 ?m and at most 200 ?m, and the carbon equivalent Ceq is a value defined by a formula: Ceq=C+Si/24+Mn/6.
    Type: Application
    Filed: October 16, 2019
    Publication date: December 30, 2021
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Kyohei MAEDA, Reiichi SUZUKI
  • Publication number: 20210394299
    Abstract: A joint structure, includes: a first member including a high tensile strength steel; a second member including a high tensile strength steel and superposed on the first member; a surface soft layer formed on at least one of a superposition surface of the first member, on which the second member is superposed, and a superposition surface of the second member, on which the first member is superposed; a molten-solidified portion formed by melting and solidifying the first member and the second member; and a heat affected zone formed around the molten-solidified portion, in which the surface soft layer has a total thickness of 5 ?m to 200 ?m, and the molten-solidified portion has a carbon amount of 0.21 mass % or more, and a maximum Vickers hardness of the surface soft layer in the heat affected zone is 100 Hv to 500 Hv.
    Type: Application
    Filed: September 19, 2019
    Publication date: December 23, 2021
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Kyohei MAEDA, Reiichi SUZUKI
  • Publication number: 20210387278
    Abstract: A welding method for joining a first plate made of a material other than steel and a second plate made of steel includes a step of making a hole through each of the first plate and the second plate, a press-fitting step, an overlapping step, and a filling and welding step. A shaft portion of a joining assist member being solid, being made of steel, and having an outer shape with step having the shaft portion and a flange portion is press-fitted in the hole of the first plate. The first plate and the second plate is overlapped such that the shaft portion faces the hole of the second plate. The hole of the second plate is filled with a weld metal and the second plate and the joining assist member are welded.
    Type: Application
    Filed: September 19, 2019
    Publication date: December 16, 2021
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventor: Reiichi SUZUKI
  • Publication number: 20210388854
    Abstract: A compressed-air-storing power generation apparatus 1 comprises a plurality of compression/expansion devices 14 having a function of producing compressed air using electric power and a function of generating electricity using compressed air, an accumulator 10 that is fluidly connected to the plurality of compression/expansion devices 14 and that accumulates compressed air, and a control apparatus 16 that stops first compression/expansion devices 14 which are being driven and drives second compression/expansion devices 14 which have stopped when a charge/discharge command value to switch between charging and discharging is generated.
    Type: Application
    Filed: October 10, 2019
    Publication date: December 16, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Takashi SATO, Ryo NAKAMICHI
  • Publication number: 20210379685
    Abstract: A method for manufacturing an additively-manufactured object, includes: an additively-manufacturing step of building a layered body by depositing a weld bead obtained by melting and solidifying a filler metal, the layered body having an opening along a forming direction of the weld bead and an internal space surrounded by the weld bead; and a closing step of forming a closing wall portion connecting an edge portion of the opening with the weld bead for closing. In the additively-manufacturing step, the opening is formed with a width dimension larger than a bead width of the weld bead, and in the closing step, the closing wall portion having a width dimension larger than the bead width is formed by the weld bead to close the opening.
    Type: Application
    Filed: October 21, 2019
    Publication date: December 9, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Shinji SATO, Takeshi YAMADA, Tatsuya FUJII, Masatoshi HIDA, Shuo HUANG, Eisuke KUROSAWA
  • Publication number: 20210381428
    Abstract: A compressed air energy storage power generation device includes a compression/expansion combined machine having a function to produce compressed air utilizing electric power and a function to generate electric power utilizing the compressed air, a pressure storage unit that is fluidly connected to the compression/expansion combined machine and stores the compressed air, inverters that adjust rotation speed of the compression/expansion combined machine, a flow rate adjustment valve that adjusts amount of the compressed air supplied from the pressure storage unit to the compression/expansion combined machine, and a control device that reduces, when receiving a command value that reduces amount of power generated by the compression/expansion combined machine, amount of power generated by the compression/expansion combined machine by making the inverters to reduce rotation speed of the compression/expansion combined machine and decreasing an opening degree of the flow rate adjustment valve.
    Type: Application
    Filed: November 11, 2019
    Publication date: December 9, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Takashi SATO, Ryo NAKAMICHI
  • Publication number: 20210379643
    Abstract: A bead forming method includes the steps of preparing a bumper stay having a partition wall that partitions an internal space and extends in a longitudinal direction, an elastic body that can be inserted into the bumper stay, and a pusher that presses the elastic body; inserting the elastic body into the bumper stay and arranging the elastic body in the bumper stay so as not to come into contact with the partition wall; and forming a buckling bead by compressing the elastic body in the longitudinal direction of the bumper stay by the pusher to expand the elastic body outward in a radial direction without coming into contact with the partition wall, thereby bulging a part of an outer wall of the bumper stay outward in the radial direction without deforming the partition wall.
    Type: Application
    Filed: October 10, 2019
    Publication date: December 9, 2021
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Taiki YAMAKAWA, Toru HASHIMURA, Yasuhiro MAEDA
  • Publication number: 20210372420
    Abstract: Provided are oil mist measurement device and method capable of obtaining an oil mist concentration with higher accuracy and a compression system using the oil mist measurement device. The oil mist measurement device of the present invention includes first-A and first-B detection sections 1A, 1B configured to detect measurement target pressures, a second detection section 2 configured to irradiate a measurement target with detection light to detect the intensity of light scattered by oil mist in the measurement target, and a concentration processing section 32 configured to correct the scattered light intensity detected by the second detection section 2 based on the pressures detected by the first-A and first-B detection sections 1A, 1B to obtain a corrected scattered light intensity thereby obtaining an oil mist concentration based on the obtained corrected scattered light intensity.
    Type: Application
    Filed: March 30, 2021
    Publication date: December 2, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kaname ARAKI, Kazuhei TAKAHASHI, Yuya NAKAMOTO
  • Publication number: 20210370222
    Abstract: To provide a hydrogen gas supply device with which pressure resistance of a filter that catches sulfur components contained in a hydrogen gas is improved. A hydrogen gas supply device for a hydrogen station includes a compression portion that compresses a hydrogen gas by reciprocating motion of a piston, in which a piston ring containing sulfur components is mounted on the piston, a filter arranged on the downstream side of the compression portion, the filter that catches sulfur components contained in the hydrogen gas, and a first pipe connecting the compression portion and the filter. The filter includes an element portion having activated carbon onto which the sulfur components contained in the hydrogen gas are absorbable, and a steel housing portion that houses the element portion, in which a gas introduction passage that communicates with the first pipe and guides the hydrogen gas to the element portion is formed.
    Type: Application
    Filed: March 12, 2021
    Publication date: December 2, 2021
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Naofumi KANEI, Daisuke WADA, Koichiro HASHIMOTO