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    • 57. 发明授权
    • Method of preventing generation of earth circulating current in
induction heating apparatus for molten steel
    • 防止在钢水感应加热装置中产生地球循环电流的方法
    • US5437434A
    • 1995-08-01
    • US276800
    • 1994-07-18
    • Yoji AoIsao TokudaMinoru Honda
    • Yoji AoIsao TokudaMinoru Honda
    • B22D11/10B22D41/01F27D11/06H05B6/10H05B6/16H05B6/20
    • F27D11/06B22D41/01H05B6/16H05B6/20
    • There is disclosed a method by which a channel-type induction heating apparatus is provided on a tundish, which comprises a steel receiving chamber and a steel discharging chamber separated by a refractory wall, each of which chambers is connected to the ground via molten steel flowing from a ladle, molten steel flowing into a mold, or a refractory, in such a manner that ground circulating current is prevented from being generated. An electromagnetic connection of an induction heating coil and an iron core of a two-leg type or a three-leg type to a loop current circuit in the molten steel is arranged symmetrically, thereby suppressing the generation of the ground circulating current. By thus suppressing the generation of the ground circulating current, it becomes unnecessary to insulate a ground circuit as required in conventional constructions, the maintenance of facilities becomes easier, besides any malfunction of the equipment due to the ground circulating current is totally eliminated.
    • 公开了一种在中间包上设置通道式感应加热装置的方法,该中间包包括钢容纳室和由耐火壁隔开的钢排放室,每个室通过钢水流动连接到地面 从浇包,流入模具的钢水或耐火材料中,以防止产生地面循环电流的方式。 感应加热线圈和双腿式或三腿式铁芯与钢水中的回路电路的电磁连接对称配置,从而抑制地面循环电流的产生。 通过这样抑制地面循环电流的产生,除了完全消除由于地面循环电流引起的设备故障之外,不需要按照传统结构的要求使接地电路绝缘,因此设备的维护变得容易。