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    Float melting apparatus and method employing axially movable crucibles
    1.
    发明公开
    Float melting apparatus and method employing axially movable crucibles 失效
    Apparat zum Schwebenschmelzen und Verfahren bei dem axial bewegbareTiegelöfenverwendet werden。

    公开(公告)号：EP0576845A1

    公开(公告)日：1994-01-05

    申请号：EP93108799.3

    申请日：1993-06-01

    申请人： NATIONAL RESEARCH INSTITUTE FOR METALS ,  CHUBU ELECTRIC POWER COMPANY, INCORPORATED ,  FUJI ELECTRIC CO., LTD.

    发明人： Fukuzawa, Akira, c/o National Research ,  Sakuraya, Kazuyuki, c/o National Research ,  Watanabe, Toshiaki, c/o National Research ,  Yamazaki, Motoo ,  Morita, Tadashi, c/o Fuji Electric Co., Ltd. ,  Take, Tatsuo, c/o Fuji Electric Co. Ltd. ,  Fujita, Michiru,c/o Fuji Electric Co., Ltd.

    IPC分类号： H05B6/32 ,  H05B6/24 ,  F27D11/06

    CPC分类号： H05B6/32 ,  F27B14/063 ,  H05B6/24

    摘要： To float and melt particularly small pieces of high-melting point metal continuously while making the amount of meltable liquid metal greater than the capacity of a crucible. A conductive crucible having segments (11a,12a) includes an upper cylindrical crucible (11) and a lower closed-end crucible (12). An induction coil (14) is arranged outside the upper crucible (11), whereas an induction coil (15) is arranged below the induction coil (14). The lower crucible (12) is in contact with the upper crucible (11) and located on the inside of the induction coil (15) at the initial melting stage. The lower crucible (12) is lowered as a columnar metal (19) grows and solidifies between molten metal (18) and the lower crucible (12). A continuous feeder (21) continuously feeds cold material (20). A molten metal surface thermometer (23) and a molten metal surface level gauge (24) are arranged above the crucible. The operation of the continuous feeder (21) is regulated within a desired range of values of the molten metal surface thermometer (23). On the other hand, the lower crucible (12) is successively lowered within a desired range of values of the molten metal surface level gauge (24).

    摘要翻译： 连续地漂浮和熔融特别是小块的高熔点金属，同时使可熔化液体金属的量大于坩埚的容量。 具有段（11a，12a）的导电坩埚包括上圆柱形坩埚（11）和下封闭端坩埚（12）。 感应线圈（14）设置在上坩埚（11）的外侧，而感应线圈（15）布置在感应线圈（14）的下方。 下坩埚（12）在初始熔化阶段与上坩埚（11）接触并位于感应线圈（15）的内侧。 随着柱状金属（19）在熔融金属（18）和下坩埚（12）之间生长和固化，下坩埚（12）下降。 连续进料器（21）连续地供给冷材料（20）。 熔融金属表面温度计（23）和熔融金属表面液位计（24）布置在坩埚的上方。 连续进料器（21）的操作被调节在熔融金属表面温度计（23）的期望值范围内。 另一方面，下坩埚（12）在熔融金属表面液位计（24）的期望值范围内连续降低。