Difference between intermediate frequency furnace and electroslag furnace

The frequencies of intermediate frequency furnace and electroslag furnace are different, and the frequency of intermediate frequency furnace is higher than that of power frequency furnace. Their principle is the same. Alternating current produces alternating magnetic field, and the metal in the alternating magnetic field produces alternating induced potential and induced current, the direction of which is opposite to that in the induction coil of the furnace. Under the action of induced electromotive force, the heated metal generates induced current. When the current passes, it does work to overcome the resistance of the metal and generates heat. Intermediate frequency furnace uses this heat to heat and melt metal, so as to achieve the purpose of melting. Its main features are as follows: 1. The molten metal is strongly stirred by electromagnetic force, which is a main feature of intermediate frequency furnace. The movement (stirring) of liquid metal starts from the center of the molten pool and moves to both ends of the coil. Because the metal is constrained by the bottom and the furnace wall, the final movement is always upward, forming a hump at the top of the furnace pool. 2. Intermediate frequency furnace remelting belongs to the initial stage of batch melting, and the metal material to be melted is composed of small pieces of burden. Due to the charging mode and other problems, the charging density is only about 1/3 furnace capacity. At this point, the charge is a poor electrical load. When the power supply is input into the furnace, the single charge will generate an arc and be welded together. Once welded together, the whole charge will form a large piece, thus improving the furnace efficiency. The arc speed between single charges depends on the efficiency. The physical and chemical properties of metals to be melted are different, and the requirements for frequency are also different. The smaller the particle size, the higher the required frequency, and the higher the frequency, the faster the melting speed will be.