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一、问题的提出 众所周知,工频有芯感应熔炼炉的工作原理相当于一个在短路状态下工作的变压器,它的通电感应线圈相当于变压器的一次线圈,其熔沟内的金属环相当于变压器的二次线圈。当一次线圈通电后,熔沟内的金属由于产生感应电流而被加热,当热量传到炉膛时,又使其炉膛内金属的温度不断上升,使之金属熔化。因此,由一次感应线圈和二次熔沟等所组成的感应单元是有芯感应熔炉的关键部位,而熔沟又是该关键部位的心脏。 工(?)有芯感应熔炼炉具有加热速度快、效率高、金属烧损少、质量好、操作方便、劳动条件好,设备投资比工频无芯感应熔炼炉低1/2～1/3等一系列优点。有芯感应熔炼炉一般用于有色金属及其合金的熔化和铸铁的保温,特别适用于金属品种比较单一的连续生产的作
First, the problem raised As we all know, MFI core melting furnace works the equivalent of a transformer in the short-circuit state of work, its power induction coil is equivalent to a transformer coil, the metal ring in the trench is equivalent to the transformer Secondary coil. When a coil is energized, the metal in the melt channel is heated due to the induced current, and when the heat reaches the hearth, the temperature of the metal in the hearth rises again, causing the metal to melt. Therefore, the induction unit consisting of primary induction coil and secondary fusion groove is the key part of the core induction furnace, and the melting groove is the heart of the key part. (?) Core induction melting furnace with heating speed, high efficiency, less metal burning, good quality, easy operation, good working conditions, equipment investment than the core frequency induction melting furnace low 1/2 to 1/3 And a series of advantages. Core induction melting furnace is generally used for non-ferrous metals and their alloys melting and insulation of cast iron, especially for a single continuous production of metal species for