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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。

    Levitating and fusing device
    5.
    发明公开
    Levitating and fusing device 失效
    Schwebe- und Schmelz-Vorrichtung。

    公开(公告)号：EP0549984A2

    公开(公告)日：1993-07-07

    申请号：EP92121618.0

    申请日：1992-12-18

    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 Inst. ,  Sakuraya, Kazuyuki, c/o National Research Inst. ,  Watanabe, Toshiaki, c/o National Research Inst. ,  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： C22B9/16 ,  F27B14/10 ,  H05B6/24

    CPC分类号： F27B14/063 ,  C22B9/16 ,  F27D21/0035 ,  H05B6/24 ,  H05B2213/02 ,  Y02P10/253

    摘要： A plurality of segments 12 respectively formed of an electrically insulated conductive material such as copper or the like are disposed inside an induction coil 1 in the peripheral direction of the induction coil 1 to thereby construct a crucible 3. There is formed a small cylindrical hole 4 in the center of the bottom portion of the crucible 3. A magnetic flux is allowed to enter the crucible 3 from slits 15 respectively formed between the hole 4 and segments 12 and is then interlinked with an object to be heated. The slits 15 respectively defined by mutually adjoining segments 12 are arranged such that the width of the bottom portion thereof is greater than that of the cylindrical portion thereof. When the width of the slit in the bottom portion is increased, then a leakage flux to the crucible is increased which in turn increases a levitation force F. If there are further formed bottom slits only in the bottom portions of the segments to thereby increase the number of the slits in the bottom portion to be greater than that of the slits in the cylindrical portion, then the leakage flux is increased to thereby increase the levitation force F, and also the fused metal is supported at multiple points, which increases the stability S thereof.

    摘要翻译： 分别由诸如铜等的绝缘导电材料形成的多个段12沿感应线圈1的周向方向设置在感应线圈1的内部，从而构成坩埚3.形成小的圆柱形孔4 在坩埚3的底部的中心。允许磁通从分别形成在孔4和段12之间的狭缝15进入坩埚3，然后与待加热物体相互连接。 分别由相邻的部分12限定的狭缝15布置成使得其底部的宽度大于其圆柱形部分的宽度。 当底部的狭缝的宽度增加时，向坩埚的泄漏通量增加，这又增加了悬浮力F.如果仅在段的底部形成底部狭缝，从而增加了 底部的狭缝数量大于圆筒部分的狭缝的数量，则泄漏通量增加，从而增加悬浮力F，并且熔融金属也被支撑在多个点，这增加了稳定性 S。