Patents by Inventor Eisuke Kurosawa

Eisuke Kurosawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150306660
    Abstract: A continuous casting method in which a molten metal obtained by melting titanium or a titanium alloy is injected into a bottomless mold having a rectangular cross-section and withdrawn downward while being caused to solidify, wherein a plasma torch (7) is caused to rotate in the horizontal direction above the surface of the molten metal (12) in the mold (2), and a horizontally rotating flow is generated by electromagnetic stirring on at least the surface of the molten metal (12) in the mold (2). It is thereby possible to cast a slab in which the casting surface condition is excellent.
    Type: Application
    Filed: January 23, 2014
    Publication date: October 29, 2015
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Eisuke KUROSAWA, Takehiro NAKAOKA, Kazuyuki TSUTSUMI, Hideto OYAMA, Hidetaka KANAHASHI, Hitoshi ISHIDA, Daiki TAKAHASHI, Daisuke MATSUWAKA
  • Publication number: 20150298204
    Abstract: Disclosed is a continuous casting method in which a melt obtained by melting titanium or a titanium alloy is poured into a bottomless mold and is drawn downward while being solidified, wherein: the surface of the melt in the mold is heated by horizontally moving a plasma torch over the surface of the melt; thermocouples are provided at a plurality of locations along the circumferential direction of the mold; if the temperature of the mold measured by one of the thermocouples is lower than a target temperature, then the output of the plasma torch is increased when the plasma torch comes close to the location where that thermocouple is installed; and if said temperature is higher than the target temperature, then the output of the plasma torch is decreased when the plasma torch comes close to the location where that thermocouple is installed.
    Type: Application
    Filed: January 23, 2014
    Publication date: October 22, 2015
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Takehiro NAKAOKA, Eisuke KUROSAWA, Kazuyuki TSUTSUMI, Hideto OYAMA, Hidetaka KANAHASHI, Hitoshi ISHIDA, Daiki TAKAHASHI, Daisuke MATSUWAKA
  • Patent number: 9162281
    Abstract: The continuous casting device according to the present invention enables at least some of a plurality of hearths (3) to be converted between being hearths (13) used for titanium, which are used during the continuous casting of titanium ingots, and being hearths (23) used for titanium alloy, which are used during the continuous casting of titanium alloy ingots. The number of hearths (23) used for titanium alloy is greater than the number of hearths (13) used for titanium. Also, the total capacity of the hearths (23) used for titanium alloy is greater than the total capacity of the hearths (13) used for titanium. Thus, titanium ingots and titanium alloy ingots can each be continuously cast by means of a single piece of equipment.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: October 20, 2015
    Assignee: Kobe Steel, Ltd.
    Inventors: Takehiro Nakaoka, Kazuyuki Tsutsumi, Eisuke Kurosawa, Hideto Oyama, Hidetaka Kanahashi, Hitoshi Ishida, Daiki Takahashi, Daisuke Matsuwaka
  • Patent number: 9156081
    Abstract: A mold (2) has a cooling means (21) for having the thermal flux at four corner sections (2a) be smaller than the thermal flux at four face sections (2b). The cooling means (21) has first channels (22a) which are each embedded in the four corner sections (2a) respectively and which channel cooling water, and second channels (22b) which are each embedded in the four face sections (2b) respectively and which channel cooling water. The distance from the inner peripheral surface of the mold (2) to the first channels (22a) is greater than the distance from the inner peripheral surface of the mold (2) to the second channels (22b).
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: October 13, 2015
    Assignee: Kobe Steel, Ltd.
    Inventors: Eisuke Kurosawa, Takehiro Nakaoka, Kazuyuki Tsutsumi, Hideto Oyama, Hidetaka Kanahashi, Hitoshi Ishida, Daiki Takahashi, Daisuke Matsuwaka
  • Publication number: 20150273573
    Abstract: By controlling the temperature (TS) of a surface portion (11a) of an ingot (11) in a contact region (16) between a mold (2) and the ingot (11) and/or a passing heat flux (q) from the surface portion (11a) of the ingot (11) to the mold (2) in the contact region (16), the thickness (D) in the contact region (16) of a solidified shell (13) obtained by the solidification of molten metal (12) is brought into a predetermined range. Consequently an ingot having a good casting surface state can be cast.
    Type: Application
    Filed: January 10, 2014
    Publication date: October 1, 2015
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Eisuke Kurosawa, Takehiro Nakaoka, Kazuyuki Tsutsumi, Hideto Oyama, Hidetaka Kanahashi, Hitoshi Ishida, Daiki Takahashi, Daisuke Matsuwaka
  • Publication number: 20150047801
    Abstract: A mold (2) has a cooling means (21) for having the thermal flux at four corner sections (2a) be smaller than the thermal flux at four face sections (2b). The cooling means (21) has first channels (22a) which are each embedded in the four corner sections (2a) respectively and which channel cooling water, and second channels (22b) which are each embedded in the four face sections (2b) respectively and which channel cooling water. The distance from the inner peripheral surface of the mold (2) to the first channels (22a) is greater than the distance from the inner peripheral surface of the mold (2) to the second channels (22b).
    Type: Application
    Filed: April 2, 2013
    Publication date: February 19, 2015
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Eisuke Kurosawa, Takehiro Nakaoka, Kazuyuki Tsutsumi, Hideto Oyama, Hidetaka Kanahashi, Hitoshi Ishida, Daiki Takahashi, Daisuke Matsuwaka
  • Publication number: 20140360694
    Abstract: The continuous casting device according to the present invention enables at least some of a plurality of hearths (3) to be converted between being hearths (13) used for titanium, which are used during the continuous casting of titanium ingots, and being hearths (23) used for titanium alloy, which are used during the continuous casting of titanium alloy ingots. The number of hearths (23) used for titanium alloy is greater than the number of hearths (13) used for titanium. Also, the total capacity of the hearths (23) used for titanium alloy is greater than the total capacity of the hearths (13) used for titanium. Thus, titanium ingots and titanium alloy ingots can each be continuously cast by means of a single piece of equipment.
    Type: Application
    Filed: March 6, 2013
    Publication date: December 11, 2014
    Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
    Inventors: Takehiro Nakaoka, Kazuyuki Tsutsumi, Eisuke Kurosawa, Hideto Oyama, Hidetaka Kanahashi, Hitoshi Ishida, Daiki Takahashi, Daisuke Matsuwaka