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The medium frequency induction furnace refers to an induction furnace with a working frequency in the range of 150 to 10000 Hz. The ramming material has the advantages of fast melting speed, high production efficiency, strong adaptability, flexible use, good electromagnetic stirring effect, convenient starting operation, and the like.
An induction furnace with a frequency in the range of 150 to 10,000 Hz is called an intermediate frequency induction furnace. The medium frequency induction furnace is a special smelting equipment suitable for smelting high quality steel and alloy. It has the advantages of fast melting speed, high production efficiency, strong adaptability, flexible use, good electromagnetic stirring effect, convenient starting operation, and molten steel covered by slag. The advantages of steel liquid pollution). The complete set of medium frequency induction furnace includes: power supply and electrical control part, furnace part, transmission and water cooling system.
The medium frequency induction furnace is especially suitable for large, medium and small furnaces with a capacity of 10kg and several tens of tons. It is used for smelting and liquid metal insulation of steel, cast iron and non-ferrous metals such as copper and aluminum, and it has strong adaptability to the charge. Intermittent operation, furnace structure and use are similar to power frequency centerless induction furnace. Since the 1970s, with the increasing power and reliability of high efficiency, static and metal-saving thyristor intermediate frequency power supplies, the intermediate frequency furnace has developed rapidly at home and abroad, not only in small and medium capacity, but also in large and large Capacity is also replacing the power frequency heartless induction furnace.
The induction coil of the induction furnace: the induction coil is the heart of the induction furnace. The electromagnetic energy is converted into heat energy through the induction coil, and the metal charge in the crucible is melted. The rectangular copper tube is wound into a multi-turn coil and has a spiral shape, and the surface is sprayed with high strength. Insulating varnish, and wrapped with insulating tape, refractory mortar is applied between the intermediate frequency furnace and the crucible, and a water-cooling ring is arranged above and below the induction coil.