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    • 24. 发明授权
    • Float melting apparatus and method employing axially movable crucibles
    • 采用轴向移动坩埚的浮法熔化装置和方法
    • US5416796A
    • 1995-05-16
    • US67149
    • 1993-05-26
    • Akira FukuzawaKazuyuki SakurayaToshiaki WatanabeMotoo YamazakiTadashi MoritaTatsuo TakeMichiru Fujita
    • Akira FukuzawaKazuyuki SakurayaToshiaki WatanabeMotoo YamazakiTadashi MoritaTatsuo TakeMichiru Fujita
    • F27B14/06F27D11/06H05B6/06H05B6/24H05B6/32H05B6/22
    • H05B6/32F27B14/063H05B6/24
    • Apparatus 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 includes an upper cylindrical crucible portion and a lower closed-end crucible portion. An induction coil is arranged outside the upper crucible portion, whereas an induction coil is arranged below the induction coil. The lower crucible portion is in contact with the upper crucible portion and located on the inside of the induction coil at the initial melting stage. The lower crucible portion is lowered as a columnar metal grows and solidifies between molten metal and the lower crucible portion. A continuous feeder continuously feeds cold material. A molten metal surface thermometer and a molten metal surface level gauge are arranged above the crucible. The operation of the continuous feeder is regulated within a desired range of values of the molten metal surface thermometer. On the other hand, the lower crucible portion is successively lowered within a desired range of values of the molten metal surface level gauge.
    • 连续地漂浮和熔融特别是小块高熔点金属的装置,同时使可熔化液体金属的量大于坩埚的容量。 具有节段的导电坩埚包括上圆柱形坩埚部分和下封闭端坩埚部分。 感应线圈设置在上坩埚部分的外侧,而感应线圈设置在感应线圈的下方。 下坩埚部分与上坩埚部分接触并且在初始熔化阶段位于感应线圈的内侧。 随着柱状金属在熔融金属和下坩埚部分之间生长和固化,下坩埚部分下降。 连续进料器连续供料冷材料。 熔融金属表面温度计和熔融金属表面液位计布置在坩埚上方。 连续进料器的操作被调节在熔融金属表面温度计的期望值范围内。 另一方面,下坩埚部分在熔融金属表面液位计的期望值范围内连续降低。