Patents Assigned to Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
  • Publication number: 20220250157
    Abstract: For a slit outlet width d and a slit inclination angle ?, the following relations (1) and (2) are satisfied: d?0.0024×(??75°)2+4.5, and d?Lc?2h/tan ?, wherein ? [°] is a slit inclination angle being an acute angle formed by at least one of slit inner wall surfaces and a slit outlet surface of a slit part, d [mm] is a slit outlet width being a width of a slit outlet formed by the pair of slit inner wall surfaces in a moving direction, h [mm] is a slit height being a shortest distance between the slit outlet and a slit inlet, and Lc [mm] is a retention section width being a width of a powder retention section in the moving direction at a position where the powder retention section is connected to the slit part.
    Type: Application
    Filed: August 11, 2020
    Publication date: August 11, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Akimine HATSUDA, Takeshi YAMADA, Eisuke KUROSAWA
  • Publication number: 20220250141
    Abstract: The objective of the present invention is to improve non-defective product yield by reducing shrinkage cavities inside small-diameter ingots, in a method for casting active metals. In this Ti—Al based alloy casting method for casting an ingot of Ti—Al based alloy by tapping molten metal from a tapping hole (5) provided in a bottom portion of a water-cooled copper crucible (2), in an induction melting furnace (3) employing said crucible (2), into a casting mold (4), the degree of vacuum inside the induction melting furnace (3) when the Ti—Al based alloy is being melted or cast is in a range of 80 to 700 Torr, and the Al concentration in the cast ingot is within ±1.0 mass % of a target value.
    Type: Application
    Filed: July 10, 2020
    Publication date: August 11, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Tomohiro NISHIMURA, Daisuke MATSUWAKA, Hitoshi ISHIDA
  • Publication number: 20220250131
    Abstract: To establish a method for obtaining a hot-press-formed steel member, which exhibits high strength, high tensile elongation (ductility) and high bendability, thereby having excellent deformation characteristics at the time of collision crush (crashworthiness), and which is capable of ensuring excellent delayed fracture resistance. A method for producing a hot-press-formed steel member by heating a steel sheet, which has a chemical component composition containing 0.10% (% by mass, and hereinafter the same shall apply) to 0.30% (inclusive) of C, 1.0% to 2.5% (inclusive) of Si, 1.0% to 3.0% (inclusive) of Si and Al in total and 1.5% to 3.0% (inclusive) of Mn, with the balance consisting of iron and unavoidable impurities, and hot press forming the steel sheet one or more times.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 11, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Takayuki YAMANO, Jiro IWAYA, Noriyuki JIMBO, Tatsuya ASAI, Naoki MIZUTA
  • Publication number: 20220251700
    Abstract: A state variable including at least one physical quantity related to performance evaluation of film formation and film formation condition is observed, a reward for a determination result of the film formation condition is calculated based on the state variable, a function for determining the film formation condition from the state variable is updated based on the reward, the film formation condition under which the reward is obtained the most is determined, the film formation condition is at least one of a first parameter related to a vacuum evacuation system, a second parameter related to a heating and cooling system, a third parameter related to an evaporation source system, a fourth parameter related to a table system, and a fifth parameter related to a process gas system, and the physical quantity is a film quality characteristic, a mechanical characteristic, and a physical characteristic that are related to the film.
    Type: Application
    Filed: July 15, 2020
    Publication date: August 11, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Akinobu KUNISUE, Tetsuya TAKAHASHI, Yosuke NAKASHIMA
  • Publication number: 20220250263
    Abstract: In a suspended industrial robot, a base and a swivel section have an internal space into which a cable can be inserted. The base has an insertion opening through which at least the cable can be passed into the internal space from the outside. A first cable holding part that holds the cable is installed on at least one of a first arm and a second arm. The cable passes through the internal space of the base and the swivel section and is routed up to an end effector with a midway portion of the cable being held by the first cable holding part.
    Type: Application
    Filed: June 12, 2020
    Publication date: August 11, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Tatsuji MINATO, Tomokatsu ISOYAMA, Taichi IGARASHI
  • Publication number: 20220226943
    Abstract: A method for manufacturing an additively-manufactured object, in which a plurality of weld beads obtained by melting and solidifying a filler metal are deposited on a base portion to build a built-up object, includes: a support bead forming step of forming a support bead on the base portion; and a depositing step of depositing a weld bead on the support bead. When the support bead is formed to be inclined from a vertical direction in the support bead forming step, a ratio H/W of a height H to a width W of the support bead is set to 0.35 or more.
    Type: Application
    Filed: April 24, 2020
    Publication date: July 21, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Shuo HUANG, Shinji SATO, Masatoshi HIDA
  • Publication number: 20220226769
    Abstract: An aspect of the present invention is a gas treatment method including: an absorption step of bringing a gas to be treated, which contains carbon dioxide and a sulfur compound, into contact with an absorption liquid to be phase-separated by carbon dioxide absorption, to cause the absorption liquid to absorb the carbon dioxide and the sulfur compound; and a first release step of heating the absorption liquid brought into contact with the gas to be treated to a temperature equal to or higher than a temperature at which the carbon dioxide absorbed by the absorption liquid is released from the absorption liquid and lower than a temperature at which the sulfur compound absorbed by the absorption liquid is released from the absorption liquid, to release the carbon dioxide from the absorption liquid.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 21, 2022
    Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), National University Corporation Tokai National Higher Education and Research System
    Inventors: Norihide MAEDA, Akira KISHIMOTO, Ken NAKANISHI, Hiroshi MACHIDA, Tsuyoshi YAMAGUCHI, Koyo NORINAGA
  • Publication number: 20220219266
    Abstract: The present invention relates to a flux-cored wire for positive polarity gas-shielded arc welding use, in which a flux contains a metal powder and also contains BaF2 and SrF2 and AlF3 and/or CaF2 as fluorides wherein the content of BaF2 is 1.0 to 4.5%, the content of SrF2 is 2.0% or less, the content of CaF2 is 0.45% or less and the content of AlF3 is 0.70% or less, at least one of metal elements constituting the flux and the fluorides is a strong deoxidizing metal element having a specified standard formation Gibbs energy, and the content of each of an oxide and a carbonate in the flux is 0.5% or less.
    Type: Application
    Filed: May 1, 2020
    Publication date: July 14, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Naoki MUKAI, Shun IZUTANI, Takashi YASHIMA
  • Publication number: 20220220894
    Abstract: A CAES power generation device includes: a compressor/expander combined machine that is of displacement type and has a function as a compressor for compressing air and a function as an expander for expanding compressed air; a motor/generator combined machine that is mechanically connected to the compressor/expander combined machine and has a function as an electric motor for driving the compressor/expander combined machine and a function as a generator driven by the compressor/expander combined machine; and a pressure accumulation tank that is fluidly connected to the compressor/expander combined machine and stores compressed air generated by the compressor/expander combined machine.
    Type: Application
    Filed: March 24, 2020
    Publication date: July 14, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventor: Masaki MATSUKUMA
  • Publication number: 20220205730
    Abstract: A laminated fluid warmer includes: a laminate including a target fluid layer having a plurality of target fluid channels through which a warming target fluid flows, and a warming fluid layer that is laminated on the target fluid layer and has a plurality of warming fluid channels through which a warming fluid for warming the target fluid layer flows; and a collection device that collects at least a part of the warming fluid accumulated in the plurality of warming fluid channels. The collection device includes a storage portion that receives the warming fluid flowing out from the warming fluid channel when collecting the warming fluid.
    Type: Application
    Filed: November 24, 2021
    Publication date: June 30, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Yohei KUBO, Koji NOISHIKI, Yasutake MIWA, Masataka AZUMA
  • Publication number: 20220196151
    Abstract: The piston ring unit includes a plurality of piston rings and an inner contact ring. A plurality of piston rings are disposed adjacent to each other in an axial direction of the piston such that joints of plurality of the piston rings do not overlap with each other in the axial direction. An inner contact ring is interposed between an outer circumferential surface of the piston and an inner circumferential surface of the piston ring in a state where the inner contact ring extends over all of the plurality of piston rings in the axial direction, and is disposed such that an opening of the inner contact ring does not overlap with the joint of the at least one piston ring as viewed in a radial direction of the piston.
    Type: Application
    Filed: November 24, 2021
    Publication date: June 23, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Toru OKADA, Tomohiro OTSUKA
  • Publication number: 20220193833
    Abstract: The present invention relates to a flux-cored wire which can be used for straight-polarity gas-shielded arc welding, wherein a flux contains one or several types of metal compound powders and, when one or several metal elements constituting the metal compound powders are formed into stable compounds under a high-temperature environment, the relationship between the weighted geometric mean value (?) of the work functions of the stable compounds and the wire diameter (D) of the flux-cored wire satisfies the following formula: {1.00????0.0908D2+0.5473D+1.547}.
    Type: Application
    Filed: May 1, 2020
    Publication date: June 23, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Naoki MUKAI, Shun IZUTANI
  • Publication number: 20220184813
    Abstract: A welding system configured to weld a workpiece by using a welding device and a positioner includes a control device configured to control the welding device and the positioner. The positioner includes a workpiece position setting mechanism having reference position information, and at least one holding mechanism configured to hold the workpiece. The control device includes a positioner position calculation means for calculating a position of the holding mechanism when holding the workpiece based on the reference position information provided from the workpiece position setting mechanism and workpiece information inputted into the control device in advance.
    Type: Application
    Filed: February 14, 2020
    Publication date: June 16, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Yoshiya TAKEMURA, Yasuyuki SAITO, Youzhuo JIAO
  • Publication number: 20220176492
    Abstract: A method for manufacturing a joint structure of dissimilar materials, the method includes: forming a low-temperature thermal spray coating on at least a part of a surface of an aluminum or aluminum alloy material by low-temperature thermal spraying a metal powder of at least one metal selected from the group consisting of pure iron, carbon steel, stainless steel, nickel, a nickel alloy, cobalt, and a cobalt alloy; overlapping the aluminum or aluminum alloy material and a steel material such that the low-temperature thermal spray coating and the steel material face each other; and joining the aluminum or aluminum alloy material and the steel material by laser a welding from a steel material side, in which the joining is performed under welding conditions in which a fusion zone is formed in the steel material, the low-temperature thermal spray coating, and the aluminum or aluminum alloy material.
    Type: Application
    Filed: February 23, 2022
    Publication date: June 9, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Kyohei MAEDA, Reiichi SUZUKI
  • Publication number: 20220178620
    Abstract: A fluid flow channel device includes a main body and a non-ceramic sub-body. The main body has a plurality of internal flow channels, and inlets and outlets thereof are arranged so as to be exposed on an outer side surface. The sub-body has a fluid supply path and a fluid recovery path. A supply port of the fluid supply path is arranged to face the inlets of the plurality of internal flow channels. A recovery port of the fluid recovery path is arranged to face the outlets of the plurality of internal flow channels. By disposing the supply port and the recovery port for transferring the fluid to and from the plurality of internal flow channels in the sub-body, it is possible to prevent a large thermal stress from being applied to the main body.
    Type: Application
    Filed: May 8, 2020
    Publication date: June 9, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Tomohiro OZONO, Koji NOISHIKI, Nobumasa ICHIHASHI
  • Publication number: 20220177985
    Abstract: A method for a blast furnace includes pulverizing coal to make pulverized coal, and pulverizing iron ore to make pulverized iron ore, and injecting the pulverized coal and the pulverized iron ore from a tuyere. A loss on ignition of the iron ore is greater than or equal to 9% by mass and less than or equal to 12% by mass, an injection rate of the pulverized coal is greater than or equal to 150 kg/tp, and an injection rate of the pulverized iron ore is greater than or equal to 2.5 kg/tp and less than or equal to 50.0 kg/tp.
    Type: Application
    Filed: March 26, 2020
    Publication date: June 9, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Shoji IKUTA, Akito KASAI
  • Publication number: 20220168835
    Abstract: A method for manufacturing a dissimilar metal joint product includes: spraying a metal powder capable of being joined to a steel material to at least a part of a surface of an aluminum or aluminum-alloy material at a low temperature and at a high speed to form a coating thereon; disposing the aluminum or aluminum-alloy material and the steel material such that the coating and the steel material face each other; and performing brazing using a brazing material or welding using a welding material between the coating and the steel material.
    Type: Application
    Filed: February 25, 2020
    Publication date: June 2, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Reiichi SUZUKI, Kyohei MAEDA
  • Publication number: 20220152726
    Abstract: This spot welding method for an aluminum material comprises: a processing step in which, in a plan view, a circular emboss expanded in a direction of superposition on a second aluminum plate side is formed at a position-to-be-welded of a first aluminum plate; an arrangement step in which positions-to-be-welded are superimposed while the expansion side of the emboss faces the second aluminum plate, and the positions-to-be-welded are arranged between a pair of electrodes; a pressing step in which the superimposed aluminum plates are pinched between the electrodes, and a central side excluding a peripheral edge of the emboss is pressed; and an electrification step of performing pressing and electrification. An electrode having a tip diameter larger than the diameter of a root part of the expansion part of the emboss is used.
    Type: Application
    Filed: March 19, 2020
    Publication date: May 19, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Mai YOSHIZAWA, Tetsu IWASE
  • Publication number: 20220154709
    Abstract: A compressor includes: a cylinder main body; a valve block; a cylinder head; a first seal group composed of a plurality of seal parts; and a second seal group composed of a plurality of seal parts. The valve block includes a guide-out flow passage which opens between the seal parts composing the first seal group and opens between the seal parts composing the second seal group. The guide-out flow passage is linked to an outer pipe for conveying a leaked gas from a compression chamber to a predetermined place.
    Type: Application
    Filed: October 14, 2021
    Publication date: May 19, 2022
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Tomohiro OTSUKA, Naofumi KANEI
  • Publication number: 20220154313
    Abstract: A door beam of a motor vehicle includes a 7000 series aluminum alloy extruded material, the 7000 series aluminum alloy extruded material including Zn: 7.5 mass % to 9.0 mass %, Mg: 1.3 mass % to 2.0 mass %, Cu: 0.1 mass % to 0.7 mass %, Si: 0.15 mass % or less, Fe: 0.3 mass % or less, Ti: 0.005 mass % to 0.2 mass %, and at least one of Mn, Cr, and Zr: 0.1 mass % to 0.5 mass %, in which contents of Mn, Cr and Zr satisfy Mn: 0.3 mass % or less, Cr: 0.25 mass % or less, and Zr: 0.25 mass %, respectively, with the remainder being Al and impurities. A Fe-based crystallized product is contained, and an average Cu content of the Fe-based crystallized product is 5.0 mass % or less.
    Type: Application
    Filed: March 5, 2020
    Publication date: May 19, 2022
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Takahiro SHIKAMA, Shinji YOSHIHARA, Misuzu YAMAMOTO, Yuki TANAKA, Ryo UNOKI, Takahiro OZAWA