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    Method of die casting spheroidal graphite cast iron
    1.
    发明公开
    Method of die casting spheroidal graphite cast iron 有权
    Verfahren zum Druckgiessen vonSphärogusseisen

    公开(公告)号：EP1440748A1

    公开(公告)日：2004-07-28

    申请号：EP04001589.3

    申请日：2004-01-26

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  Aisin Takaoka Co., Ltd.

    发明人： Ohtake, Kazumi ,  Manabe, Akira ,  Hibino, Yoshihiro ,  Sato, Takahiro ,  Niwa, Kazufumi

    IPC分类号： B22D17/22 ,  B22C3/00 ,  C21C1/10

    CPC分类号： B22C9/061 ,  B22D17/22 ,  C21C1/10

    摘要： A method of die casting spheroidal graphite cast iron able to prevent formation of chill crystals to allow the crystallization of fine spheroidal graphite and simultaneously prevent the formation of internal defects, including the steps of preparing a die formed with a heat insulation layer at inside walls of a cavity, filling molten metal having a composition of the spheroidal graphite cast iron through a runner into the cavity, closing the runner so as to seal the cavity right before the molten metal in the cavity starts to solidify, and allowing the molten metal to solidify by the action of the inside pressure caused by crystallization of the spheroidal graphite in the sealed cavity.

    摘要翻译： 一种压铸球墨铸铁的方法，其能够防止冷凝晶体的形成，从而使细球状石墨结晶，同时防止内部缺陷的形成，包括制备在内壁上形成有隔热层的模具的步骤 将具有球墨铸铁的组成的熔融金属通过流道填充到空腔中，关闭流道以便在腔内的熔融金属开始固化之前密封腔，并使熔融金属固化 通过在密封腔中球状石墨的结晶引起的内部压力的作用。