Patents Assigned to Takaji Kusakawa
  • Method for producing thin plate of phosphor bronze
    Patent number: 4927467
    Abstract: A method for continuous production of thin plate ingot of phosphor bronze by quenching molten metal of bronze, wherein molten metal of phosphor bronze is quenched at a rate of from 10.sup.2 .degree. C./sec. to 10.sup.5 .degree. C./sec. to thereby solidify the same, and then the solidified metal is continuously cooled to a normal temperature to thereby obtain a microstructure having a crystal grain size of 50 .mu.m or below and in which appearance of the dendritic structure and the segregation layer is suppressed.
    Type: Grant
    Filed: February 10, 1988
    Date of Patent: May 22, 1990
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Takaji Kusakawa
    Inventors: Takaji Kusakawa, Katsuyoshi Wakamoto, Mitsuyuki Imaizumi