Patents Assigned to Nisshin Steel Co., Ltd.
  • Patent number: 11117178
    Abstract: The invention provides a formed material manufacturing method by which unnecessary thickening of a flange can be avoided. The formed material manufacturing method allows a formed material to be manufactured by forming processes that include at least one drawing-out process, at least one drawing process performed after the drawing-out process, and at least one coining process performed after the drawing process. The width of the rear end side of a punch used in the drawing-out process is set to be wider than the width of the tip end side thereof. An ironing process is performed on a region corresponding to the flange of the base metal sheet by pushing the base metal sheet together with the punch into a pushing hole.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: September 14, 2021
    Assignee: NISSHIN STEEL CO., LTD.
    Inventors: Naofumi Nakamura, Yudai Yamamoto, Katsuhide Nishio
  • Patent number: 11072013
    Abstract: A formed material 1 having a cylindrical trunk portion 10 and a flange portion 11 formed at an end section of the trunk portion is manufactured by performing multi-stage drawing of a material metal sheet. Multi-stage drawing includes: preliminary drawing that forms, from a material metal sheet 2, a preform 20 having a trunk element 20a; compression drawing that is performed at least once after the preliminary drawing and that forms the trunk portion 10 by drawing the trunk element 20a while applying a pressure-adjustable compressive force to the trunk element 20a; and finish-ironing that is performed for securing dimensional precision at least once following the compression drawing.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: July 27, 2021
    Assignee: NISSHIN STEEL CO., LTD.
    Inventors: Naofumi Nakamura, Yudai Yamamoto
  • Patent number: 10961596
    Abstract: The present invention provides a novel method for supplying a reducing gas to the shaft part of a blast furnace with which a large amount of reducing gas containing hydrogen at a high concentration can be supplied to a deeper position in the blast furnace (location of the blast furnace closer to the center axis in the radial direction) and with which it is possible to reduce the total generated amount of CO2 of the CO2 amount that is reduced by conducting hydrogen smelting in the blast furnace and the CO2 amount that is generated during production of the reducing gas supplied to the blast furnace. The method for supplying a reducing gas to the shaft part of a blast furnace according to the present invention is characterized by reforming coke oven gas by increasing the temperature thereof to 1200 to 1800° C.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: March 30, 2021
    Assignees: NIPPON STEEL CORPORATION, JFE STEEL CORPORATION, KOBE STEEL, LTD., NISSHIN STEEL CO., LTD., NIPPON STEEL ENGINEERING CO., LTD.
    Inventors: Nobuaki Ito, Hitoshi Donomae, Kimihito Suzuki, Kenji Nakao, Toshio Isohara
  • Patent number: 10906113
    Abstract: Hot dip Zn-based alloy coated steel sheets (1, 1?) are arc-weld in such a way that (a) a current waveform is a pulsed current waveform in which (i) a peak current and a base current alternate with each other at a pulse period of 1 ms to 50 ms and (ii) an average welding current is 100 A to 350 A and (b) an average welding voltage is 20 V to 35 V. Each of the hot dip Zn-based alloy coated steel sheets (1, 1?) includes a coating layer that contains Zn as a main component and that contains Al at a concentration of 1.0% by mass to 22.0% by mass, and has a coating weight W of 15 g/m2 to 250 g/m2.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: February 2, 2021
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Kazuaki Hosomi, Tomokazu Nobutoki, Takefumi Nakako
  • Patent number: 10903461
    Abstract: Provided is a battery armoring stainless steel foil which, without the need for a special treatment such as corona discharge, has excellent adhesiveness to resin after being thermally shocked and after being immersed in an electrolyte solution. A battery armoring stainless steel foil (1) includes an oxide film (1a), having a thickness of not less than 2 nm, which contains (i) one or more metallic elements, existing as a hydroxide, in an amount of not less than 35 mol percent and (ii) SiO2 in an amount of not more than 40 mol percent, the battery armoring stainless steel foil (1) having an arithmetic mean roughness Ra of less than 0.1 ?m but not less than 0.02 ?m in a direction orthogonal to a direction in which the battery armoring stainless steel foil (1) has been rolled.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: January 26, 2021
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Daichi Ueda, Shoichi Matsuo, Takahiro Fujii, Naoki Hirakawa, Shuichi Sugita, Yukio Oda
  • Patent number: 10894283
    Abstract: Provided are: a method for producing a molded material comprising tubular body and a flange formed at an end portion of the body; and a molded material produced thereby, which can prevent the flange of the molded material becoming unnecessarily thick, avoid the generation of wrinkles and buckling, and allow weight reduction of the molded material and size reduction of a base metal sheet. When producing the molded material by molding processes including at least one drawing-out process and at least one drawing process performed after the drawing-out process, a first drawing process is carried out on a region corresponding to the body while opening a die and a drawing sleeve, and an ironing process is carried out on a region corresponding to the flange while keeping a constant interval of a mold gap between the die and the drawing sleeve.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: January 19, 2021
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Naofumi Nakamura, Yudai Yamamoto
  • Publication number: 20200346306
    Abstract: A laser cut-and-machined product made from a plated steel plate. A cut face of the plated steel plate is coated with plating-layer-containing metal of a top surface of the plated steel plate that is melted and/or evaporated at the time of laser cutting and machining.
    Type: Application
    Filed: July 20, 2020
    Publication date: November 5, 2020
    Applicants: AMADA CO., LTD., NISSHIN STEEL CO., LTD.
    Inventors: Hideo HARA, Masahito ITO, Masanori UEHARA, Hiroshi ASADA, Hirokazu SASAKI, Hiroshi HORIKAWA
  • Patent number: 10790480
    Abstract: A lithium-ion secondary-battery case that allows bonding without weld spatter and has high strength against external force acting on the battery case, and a method for manufacturing the lithium-ion secondary-battery case are provided. Specifically, an austenitic stainless steel foil is used for a cup component (2), and a two-phase stainless steel having an austenite transformation start temperature AC1 in a temperature increase process at 650° C. to 950° C. and an austenite and ferrite two-phase temperature range of 880° C. and higher, is used for a cover component (3), and the diffusion bonding is proceeded while accompanied by grain boundary movement upon transformation of the two-phase steel from a ferrite phase into an austenite phase within a heating temperature range of 880° C. to 1080° C.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: September 29, 2020
    Assignee: NISSHIN STEEL CO., LTD.
    Inventors: Katsunari Norita, Norimasa Miura, Jun Kurobe
  • Patent number: 10786843
    Abstract: A method for manufacturing a molded member includes carrying out a multi-stage drawing process and at least one finishing ironing process on a base metal sheet, the molded member including a tubular body and a flange formed at an end portion of the body. The multi-stage drawing process includes a preliminary drawing process for forming a preliminary body having a body element from the base metal sheet, and a plurality of compression drawing processes performed after the preliminary drawing process, the compression drawing processes drawing the body element while applying compressive force along a depth direction of the body element to a circumferential wall of the body element. The at least one finishing ironing process is carried out such that a mold clearance of an upper portion of the body element is narrower than a mold clearance of a lower portion of the body element.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: September 29, 2020
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Naofumi Nakamura, Yudai Yamamoto
  • Patent number: 10760154
    Abstract: Provided is (i) a hot-dip Al-based alloy-coated steel sheet which includes a coated layer having a surface on which fine spangles are stably and sufficiently formed and which has a beautiful surface appearance due to the fine spangles thus formed on the surface of the coated layer, and (ii) a method of producing such a hot-dip Al-based alloy-coated steel sheet. The hot-dip Al-based alloy-coated steel sheet includes: a substrate steel sheet; and a hot-dip aluminum-based alloy coated layer which is formed on a surface of the substrate steel sheet and which contains boron at an average concentration of not less than 0.005 mass % and contains potassium at an average concentration of not less than 0.0004 mass %.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: September 1, 2020
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Shinya Furukawa, Koutarou Ishii, Yasunori Hattori
  • Patent number: 10759005
    Abstract: A laser cutting and machining method for plated steel plated, when irradiating a laser beam LB on to the upper surface of a plated steel plate W and laser cutting and machining same: a plating layer-containing metal that has been melted and/or evaporated by the irradiation of the laser beam LB is caused to flow on to a cut surface of the plated steel plate W as a result of assist gas that is jetted towards a laser machining units; and the plating layer-containing metal is coated on the cut surface.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: September 1, 2020
    Assignees: AMADA HOLDINGS CO., LTD., NISSHIN STEEL CO., LTD.
    Inventors: Hideo Hara, Masahito Ito, Masanori Uehara, Hiroshi Asada, Hirokazu Sasaki, Hiroshi Horikawa
  • Patent number: 10751751
    Abstract: A method for treating a metal substrate surface before coating or printing thereof, the method including: preheating to 40° C. or above a specific metal substrate having a thermal conductivity of 10 W/mK or higher, and thereafter continuously performing a flame treatment on the substrate surface, prior to coating or printing of the surface of the substrate with a coating material or an ink.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: August 25, 2020
    Assignee: NISSHIN STEEL CO., LTD.
    Inventors: Masaki Satou, Seiju Suzuki, Masaru Hiraku, Shuichi Sugita
  • Patent number: 10737293
    Abstract: A method for treating a metal substrate surface before coating or printing thereof, the method including preheating to 40° C. or above a specific metal substrate having a thermal conductivity of 10 W/mK or higher, and thereafter performing a flame treatment on the substrate surface, prior to coating or printing of the surface of the substrate with a coating material or an ink.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: August 11, 2020
    Assignee: NISSHIN STEEL CO., LTD.
    Inventors: Masaki Satou, Seiju Suzuki, Masaru Hiraku, Shuichi Sugita
  • Patent number: 10724242
    Abstract: The present invention relates to a metal roofing material 1 that is arranged on an eave-side metal roofing material in an eave-ridge direction 6 of a roof so as to overlap the metal roofing material and the eave-side metal roofing material. The metal roofing material includes a front substrate 2 made of a metal sheet and including a body portion 20 formed in a box shape; a back substrate 3 arranged on the back side of the front substrate 2 so as to cover an opening of the body portion 20; a core material 4 filled between the body portion 20 and the back substrate 3; and at least one plate reinforcing member 5 that is embedded in the core material 4 at a position closer to the back substrate 3 than a top plate of the body portion 20 or that is disposed in contact with the outer surface of the back substrate 3.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: July 28, 2020
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Kenichi Okubo, Motonori Kurotaki, Shuichi Sugita, Keiji Izumi, Tomoyuki Nagatsu, Yuugo Oota, Katsunari Norita, Keita Noguchi, Norimasa Miura
  • Patent number: 10710196
    Abstract: A vacuum insulation panel manufacturing method that makes it possible to manufacture low-cost, high-performance vacuum insulation panels, and a vacuum insulation panel are provided.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: July 14, 2020
    Assignee: NISSHIN STEEL CO., LTD.
    Inventors: Tsutomu Azuma, Hirohisa Mishima, Takefumi Nakako
  • Patent number: 10697053
    Abstract: The purpose of the present invention is to provides a method for manufacturing a black plated steel sheet that is capable of more evenly blackening the area of the plated steel sheet to be blackened. The present invention relates to a method for manufacturing a black plated steel sheet by bringing a plated steel sheet with an Al- and Mg-containing hot-dip galvanized layer into contact with water vapor inside a sealed vessel. This method performs, in the following order: a first step for heating a plated steel sheet disposed inside a sealed vessel in the presence of a gas, the dew point of which is always less than the plated steel sheet temperature; a second step for evacuating the heated ambient gas inside the sealed vessel to make the pressure of the gas inside the sealed vessel to be 70 kPa or less; and a third step for introducing water vapor inside the sealed vessel in which the pressure of the gas therein has been reduced to 70 kPa or less to blacken the galvanized layer.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: June 30, 2020
    Assignee: NISSHIN STEEL CO., LTD.
    Inventors: Tadashi Nakano, Shin Ueno, Masaya Yamamoto
  • Patent number: 10695874
    Abstract: Provided is a stainless steel material for a diffusion bonding jig in which deformation of bonding members is suppressed while maintaining diffusion bonding properties of the bonding members, and in which releasability (detachability of a bonding member from a release member) after diffusion bonding treatment is excellent. An embodiment of the present invention provides a stainless steel material for a diffusion bonding jig having excellent deformation suppressibility and releasability, the material being a stainless steel material including 1.5 mass % or more of Si, and a ratio (Fr/Fp) of the high-temperature strength (Fr) of the stainless steel material at 1000° C. to the high-temperature strength (Fp) of a bonding member at 1000° C. being 0.9 or more, the bonding member to be bonded by diffusion bonding. The stainless steel material preferably includes C: 0.1 mass % or less, Si: 1.5 to 5.0 mass %, Mn: 2.5 mass % or less, P: 0.06 mass % or less, S: 0.02 mass % or less, Ni: 8.0 to 15.0 mass %, Cr: 13.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: June 30, 2020
    Assignee: NISSHIN STEEL CO., LTD.
    Inventors: Yoshiaki Hori, Kazunari Imakawa
  • Publication number: 20200071808
    Abstract: Provided is (i) a hot-dip Al-based alloy-coated steel sheet which includes a coated layer having a surface on which fine spangles are stably and sufficiently formed and which has a beautiful surface appearance due to the fine spangles thus formed on the surface of the coated layer, and (ii) a method of producing such a hot-dip Al-based alloy-coated steel sheet. The hot-dip Al-based alloy-coated steel sheet includes: a substrate steel sheet; and a hot-dip aluminum-based alloy coated layer which is formed on a surface of the substrate steel sheet and which contains boron at an average concentration of not less than 0.005 mass % and contains potassium at an average concentration of not less than 0.0004 mass %.
    Type: Application
    Filed: November 8, 2019
    Publication date: March 5, 2020
    Applicant: Nisshin Steel Co., Ltd.
    Inventors: Shinya Furukawa, Koutarou Ishii, Yasunori Hattori
  • Patent number: 10507489
    Abstract: The present invention provides a method for manufacturing a decorative construction plate, the method including subjecting a metal siding material including: a metallic substrate on which a recess-projection pattern having a height difference of 0.5 mm or more is formed and on which an ink receiving layer formed from a resin composition is provided; a core material; and a back-side material, to flame treatment by exposing the metal siding material to flame with an output of 250 kJ/h to 12000 kJ/h per 10-mm width of a flame port of a burner so that the surface temperature of the substrate does not exceed 300° C., followed by performing inkjet printing using an active ray curable ink.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: December 17, 2019
    Assignee: NISSHIN STEEL CO., LTD.
    Inventors: Masaki Satou, Seiju Suzuki, Masaru Hiraku, Shuichi Sugita
  • Publication number: 20190244723
    Abstract: A composite twisted wire (1) which is obtained by twisting a plurality of strands. This composite twisted wire (1) includes: an aluminum-covered strand (2) that is obtained by forming a coating film (2b), which is formed of aluminum or an aluminum alloy, on the surface of a steel wire (2a); and an aluminum wire (3) that is formed of aluminum or an aluminum alloy. This composite twisted wire is reduced in weight, while exhibiting excellent tensile strength and excellent long-term stability with respect to electrical resistance. Consequently, this composite twisted wire is suitable, for example, for use as a wire harness of automobiles.
    Type: Application
    Filed: April 18, 2019
    Publication date: August 8, 2019
    Applicant: NISSHIN STEEL CO., LTD.
    Inventors: Shinichi KAMOSHIDA, Tadaaki MIONO, Yasunori HATTORI