Patents by Inventor Tsunehiro Ueda

Tsunehiro Ueda 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).

  • Mold additives for use in continuous casting
    Patent number: 4806163
    Abstract: A mold additive for use in continuous casting, which includes a base material having a chemical composition of CaO--BaO--SiO.sub.2 --F system, and contains 2-15% by weight in total of at least one carbonate of alkali and alkaline earth metals, 2-30% by weight in total of at least one fluoride of alkali and alkaline earth metals and 0.2-10% by weight of carbon, and, if necessary, 2-10% by weight in total of at least one oxide of Fe, Mn and Ni, and has a solidification temperature of not more than 900.degree. C. and a viscosity at 1,300.degree. C. of not more than 3 poises. The base material has a weight ratio of (CaO+BaO)/SiO.sub.2 of 0.6-2.5 and contains not less than 2% by weight of BaO and 2-15% by weight of F.
    Type: Grant
    Filed: November 5, 1987
    Date of Patent: February 21, 1989
    Assignees: Kawasaki Steel Corporation, Sakai Chemical Industriy Co., Ltd.
    Inventors: Hakaru Nakato, Tsutomu Nozaki, Yasuhiro Habu, Hiromu Oka, Tsunehiro Ueda, Takao Koshikawa, Hideaki Kishimoto, Fumitaka Shimokawa
  • Method of heating a molten steel in a tundish for a continuous casting apparatus
    Patent number: 4582531
    Abstract: A method of heating a molten steel in a tundish for a continuous casting apparatus while the molten steel being introduced and circulated in a roundabout channel of a horizontal channel type induction heater attached to the side wall of the tundish. This relates to the technique in which electric power is applied to the induction heater depending upon the stored amount of the molten steel in the tundish, for instance, the power is increasingly supplied gradually in the case of the pouring at an initial stage, to effectively eliminate the current interference due to the pinching, and compensate the reduction in the temperature accompanied by the molten steel pouring at the time of the continuous casting.
    Type: Grant
    Filed: September 12, 1984
    Date of Patent: April 15, 1986
    Assignee: Kawasaki Steel Corporation
    Inventors: Yutaka Yoshii, Yasuhiro Habu, Hiromitsu Yamanaka, Tsunehiro Ueda
  • Method of increasing casting width for a slab during a continuous casting operation
    Patent number: 4522251
    Abstract: The width of a slab can be easily increased during a continuous casting operation by a simple method, wherein casting of a molten steel is temporarily stopped during the continuous casting operation, the narrow side of a casting mold is moved to a predetermined width, corresponding to the increased width to be of the slab, to form a space between the narrow side of the mold and the solidified shell of a slab, a closing member having a width 1-5 mm smaller than the increased width of the slab, and a cooling and sealing material are inserted into the space to form a clearance of 1-5 mm between the closing member and the narrow side of the mold, and the casting of the molten steel is again started.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: June 11, 1985
    Assignee: Kawasaki Steel Corporation
    Inventors: Takao Koshikawa, Tsunehiro Ueda, Tadao Ozeki