Patents Assigned to Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
  • Publication number: 20200254514
    Abstract: A crack-free continuous casting mold configured so that occurrence of cracks at a casting billet can be reduced even in a case where a casting speed exceeds 500 mm/min. The continuous casting mold continuously casts a casting billet while cooling molten metal by a cooling device provided at a cooling casting mold. The cooling device includes multiple cooling nozzles configured to release coolant water to the casting billet pulled out of the cooling casting mold to cool the casting billet. Multiple ejection ports of the multiple cooling nozzles are arranged along an outer circumferential direction of a surface of the casting billet. Each ejection port has a short side and a long side, and is configured such that the long side is arranged along an axial direction of the casting billet.
    Type: Application
    Filed: January 9, 2020
    Publication date: August 13, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Yuki Konishi, Kenichi Hirukawa, Hiroki Sawada
  • Publication number: 20200256765
    Abstract: Provided are a tire tangential load measuring device capable of directly measuring a tangential load of a tire and a tire rolling resistance evaluating device capable of evaluating a rolling resistance of a tire using the tire tangential load measuring device, without using a large-sized device. A tire tangential load measuring device (10) includes two or more load rolls (44A, 44B) smaller in diameter than that of the tire and arranged side by side, an air cylinder (13) as a moving mechanism capable of pressing the two or more load rolls (44A, 44B) against the rotating tire with a predetermined load fz, and a strain gauge (51) as a tangential load sensor for measuring the tangential load fx of the tire in a rotating state while the surfaces of the two or more load rolls (44A, 44B) are pressed against the tread surface of the tire with the predetermined load fz. The tire rolling resistance evaluating device uses the tangential load measuring device (10).
    Type: Application
    Filed: October 10, 2018
    Publication date: August 13, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventor: Toru OKADA
  • Publication number: 20200246914
    Abstract: Provided is a manufacturing method for a joint body having a first metal member and a second metal member joined together by welding. With a density of the welding set higher than a density of the welding of other portions, the second metal member is bent within a plane by changing a positional relation of the second metal member relative to the first metal member in plan view.
    Type: Application
    Filed: August 3, 2018
    Publication date: August 6, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kenichi WATANABE, Takayuki KIMURA, Liang CHEN, Masao HADANO, Reiichi SUZUKI
  • Publication number: 20200246860
    Abstract: A method for joining members according to the present invention includes: providing a first member, a second member, a guide shaft member, a rubber member, a first plunger, a second plunger, and a drive mechanism; inserting the second member into a hole portion of the first member; inserting the guide shaft member into a through-hole of the rubber member; inserting the rubber member, into which the guide shaft member is inserted, inside the second member; arranging an assembly in which the first member, the second member, the rubber member, and the guide shaft member so as to horizontally extend; arranging the assembly so as to be sandwiched by the first plunger and the second plunger; and moving the second plunger toward the first plunger; compressing the rubber member by the first plunger and the second plunger in a direction where the guide shaft member extends, and expanding the rubber member radially outside the guide shaft member; and thus expanding and deforming at least a portion of the second member
    Type: Application
    Filed: March 14, 2018
    Publication date: August 6, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Yasuhiro MAEDA, Toru HASHIMURA, Kenichi WATANABE, Takayuki KIMURA
  • Publication number: 20200248294
    Abstract: The present invention is a production method of a hot-dip galvanized steel sheet including annealing a belt-shaped steel sheet having a Si content of greater than or equal to 0.2% by mass, wherein the annealing is continuously carried out using an annealing furnace having an oxidation heating zone and a reduction heating zone in this order, while the steel sheet is fed using rollers. The annealing includes oxidizing a surface of the steel sheet in the oxidation heating zone at a temperature at which roll pickup does not occur and reducing an iron oxide layer, formed by the oxidizing, in the reduction heating zone before the iron oxide layer reaches an initial roller in the reduction heating zone.
    Type: Application
    Filed: September 13, 2018
    Publication date: August 6, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Kazuya KIMIJIMA, Seiji MORISHIGE, Shinobu NAKAYAMA, Ryo SASAKI, Mikato TAKEDA
  • Publication number: 20200248975
    Abstract: A metal base plate material includes trip-shaped first regions each having a plurality of first ridges arranged substantially parallel to each other and at substantially equal intervals such that an angle of intersection with a longitudinal direction is greater than or equal to 10° and less than or equal to 25°. Strip-shaped second regions each have a plurality of second ridges arranged substantially parallel to each other and at substantially equal intervals and angled to face the plurality of the first ridges in a crosswise direction. The first regions and second regions are separated by a gap regions therebetween, at substantially equal intervals. First ends on a downstream side of the plurality of the first ridges and second ends on a downstream side of the plurality of the second ridges are positioned differently from each other in the longitudinal directions.
    Type: Application
    Filed: September 27, 2018
    Publication date: August 6, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Keitaro TAMURA, Yoshio ITSUMI, Kazuhisa FUKUTANI, Akio OKAMOTO
  • Publication number: 20200238365
    Abstract: The member joining device includes: a tubular unit including a tubular assembly that is fixed, a flange portion whose position in a first central axis direction is fixed with respect to the tubular assembly; a shaft unit that includes a shaft assembly inserted into the tubular assembly in a linearly movable manner, and a protrusion portion whose position in a second central axis direction is fixed with respect to the shaft assembly, wherein the protrusion portion is positioned radially outside the first central axis of the tubular assembly, the protrusion portion faces the flange portion in the central axis direction; a rubber member arranged radially outside the tubular assembly, between the protrusion portion and the flange portion in the central axis direction; and a motion mechanism that moves the shaft unit in the central axis direction with respect to the tubular unit.
    Type: Application
    Filed: March 14, 2018
    Publication date: July 30, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Yasuhiro MAEDA, Toru HASHIMURA, Kenichi WATANABE, Takayuki KIMURA
  • Publication number: 20200239979
    Abstract: A method for refining a titanium material, in which oxygen contained in a titanium material made of a pure titanium, a titanium alloy or an intermetallic compound containing titanium as one of main components is removed, the method includes: a first melting step of melting the titanium material under a noble gas atmosphere containing 5 to 70 vol % of hydrogen, thereby introducing hydrogen into a melt of the titanium material; and a second melting step of melting the titanium material into which hydrogen has been introduced in the first melting step under a noble gas atmosphere, thereby removing oxygen contained in the titanium material from the melt of the titanium material together with the hydrogen. Each of the first melting step and the second melting step is carried out at least once.
    Type: Application
    Filed: October 29, 2018
    Publication date: July 30, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Daisuke MATSUWAKA, Takayuki NARUSHIMA, Kyosuke UEDA
  • Publication number: 20200230733
    Abstract: A purpose of the present invention is to provide a flux-cored wire that excels in slag removability and weldability, and is capable of high-efficiency operation without the risk of reheat cracking and makes it possible to obtain a welding bead with high corrosion resistance even when used in equipment operating at high temperature for a long time. The present invention relates to a flux-cored wire for gas-shielded arc welding that is used for welding using a specific shielding gas having a high Ar ratio, includes substantially no As, Sb, Pb and Bi, has slag component and alloy component compositions satisfying predetermined conditions, and satisfies the relationship {(3×?O2?)+?CO2?+(0.0085×A2)?(0.19×A)}?20.0 (where A={?Cr?+(4.3×?Nb?)}).
    Type: Application
    Filed: November 16, 2018
    Publication date: July 23, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventor: Naoki MUKAI
  • Publication number: 20200231254
    Abstract: An offshore floating facility includes a hull and an intermediate fluid type vaporizer. The intermediate fluid type vaporizer includes: a pump which pumps sea water; an intermediate fluid evaporator which evaporates an intermediate fluid by the sea water pumped up by the pump; an LNG evaporator which vaporizes an LNG by the intermediate fluid evaporated in the intermediate fluid evaporator; a gas pipe which guides the intermediate fluid evaporated in the intermediate fluid evaporator to the LNG evaporator; and a liquid pipe which guides the intermediate fluid condensed in the LNG evaporator to the intermediate fluid evaporator. The LNG evaporator is disposed on a deck of the hull, the intermediate fluid evaporator is disposed below the deck, and the intermediate fluid is allowed to naturally circulate between the intermediate fluid evaporator and the LNG evaporator.
    Type: Application
    Filed: February 19, 2018
    Publication date: July 23, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventor: Shinji EGASHIRA
  • Publication number: 20200223272
    Abstract: Both weight reduction and inhibition of torsional rigidity deterioration in a structural member requiring a torsional rigidity against a torsional moment are attained. A structural member has a first end including a first attaching part, a second end including a second attaching part, and an arm extending from the first end to the second end. The arm has a first outside surface, a second outside surface, and an arm surface. The arm has a first rib and a second rib protruding from the arm surface in a thickness direction. The first rib extends in an inclination direction that is a direction directed from the first outside surface toward the second outside surface and is a direction having a component of an arm direction. The second rib is formed so as to intersect with the first rib.
    Type: Application
    Filed: December 31, 2019
    Publication date: July 16, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventor: Hiroaki HOSOI
  • Publication number: 20200222965
    Abstract: A coil unit is inserted into a tube member, an electromagnetic-forming coil part is arranged at a tube member forming position, a coil-side terminal is connected to a power-supply-side terminal of an end part of a high-voltage power supply cable, the electromagnetic-forming coil part is energized by a power supply part to electromagnetically form the tube member, the coil-side terminal and the power-supply-side terminal are separated, and the coil unit is removed from the tube member. Thus, the tube member can be separated from the high-voltage power supply cable during transport.
    Type: Application
    Filed: July 12, 2018
    Publication date: July 16, 2020
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Yoshihaya IMAMURA, Takayoshi SUGISAKI, Chieko IMAI
  • Publication number: 20200217755
    Abstract: A tire testing machine is for testing a tire, comprising a free roller section configured to include a plurality of rollers having an endmost roller disposed downstream of a lubricator in a conveying direction and farthest from a predetermined reference position, the endmost roller being disposed such that a horizontal distance from the reference position is equal to or greater than a radius of a largest of a plurality of tires set in advance as objects of application of a lubricant.
    Type: Application
    Filed: June 28, 2018
    Publication date: July 9, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Jumpei FUKUDA, Yoshiaki MATSUBARA, Yu SUMIMOTO, Takashi SUMITANI
  • Publication number: 20200206798
    Abstract: A method for manufacturing a press molded product includes forming a plurality of corner portions in a pressed portion of a pressed member, providing the pressed member between a first die and a second die, and press molding the pressed portion to decrease a height of the pressed portion. The press molding includes forming a pair of first bent portions in the pressed portion by means of the corner portions, the pair of first bent portions being bent to protrude toward the second die, forming a second bent portion in the pressed portion by means of the corner portions while holding the pair of first bent portions by a pair of holding portions, the second bent portion being bent to protrude toward the first die from a position between the pair of first bent portions, and pressing and deforming the second bent portion.
    Type: Application
    Filed: May 29, 2018
    Publication date: July 2, 2020
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Kazuki SAKAMOTO, Yasuhiro HAYASHIDA, Kenichi WATANABE, Takayuki KIMURA
  • Publication number: 20200206849
    Abstract: This aluminum alloy brazing sheet is provided with: a core material comprising 2.0 mass % or less (including 0 mass %) of Mg and a remainder of Al and unavoidable impurities; and a brazing material comprising Si, Bi, Mg, and a remainder of Al and unavoidable impurities. The aluminum alloy brazing sheet satisfies the expressions 3?CSi?13, 0.13CMg?0.3?CBi?0.58CMg0.45, CMg-b?0.1, and 0.2?CMg?1.1 when the Si content of the brazing material is denoted by CSi, the Bi content of the brazing material is denoted by CBi, the Mg content of the brazing material is denoted by CMg-b, the Mg content of the core material is denoted by CMg-c, and CMg=CMg-b+CMg-c/2.
    Type: Application
    Filed: May 24, 2018
    Publication date: July 2, 2020
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), DENSO CORPORATION
    Inventors: Takahiro IZUMI, Akihiro TSURUNO, Shimpei KIMURA, Yuji SHIBUYA, Takahiro SHINODA, Shogo YAMADA, Shingo OONO
  • 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: 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