Industrial Furnaces For Medium Frequency Induction Melting

product brief introduction:

Induction furnaces with frequencies in the range of 150~10000 Hz are called medium-frequency induction furnaces. Medium frequency induction furnace is suitable for smelting high-quality steel and alloy special smelting equipment, with fast melting speed, high production efficiency, strong adaptability, flexible use, electromagnetic stirring effect is good, easy to start operation, liquid steel by slag thin cover (reduce air pollution to liquid steel) and other advantages. The complete set of equipment of medium frequency induction furnace includes: power supply and electrical control part, furnace body part, transmission and water cooling system.
Medium frequency induction furnace is especially suitable for 10kq tens of tons of capacity of large, medium and small furnaces, steel, cast iron and copper, aluminum and other non-ferrous metals and their alloys for melting and liquid metal insulation, strong adaptability to the charge, suitable for intermittent operation, furnace structure and use of the same power frequency induction furnace. Since the 1970s, with the increasing power and reliability of high-efficiency stationary and metal-saving thyristor intermediate frequency power supply, intermediate frequency furnace has been rapidly developed at home and abroad, not only in small and medium-sized capacity has obvious advantages and even in large capacity is replacing power frequency centerless induction furnace.

product Make up:
The medium frequency induction furnace is made of a single coil of copper tube, and there is a refractory knot-tied crucible in the water-cooled induction to accommodate the melting metal. The induction furnace is usually composed of four parts: the power supply, the furnace body (mainly the induction ring and the crucible prepared with refractory materials in the induction ring), the capacitor bank (used to improve the power factor), the control and the operating system.

Flow chart of industrial furnace for medium frequency induction melting:

Advantages:
Compared with the power frequency centerless induction furnace, the medium frequency induction furnace has the following advantages
(1) Under the same capacity, the input power of the medium frequency furnace is high, which can be 2 to 3 times that of the power frequency furnace, thus greatly improving the melting rate of the furnace and reducing power consumption.
(2) No need for residual molten liquid and large frit, can be melted at any time, reduce power consumption,
(3) Each time you can pour all or part of the molten liquid, so the operation flexibility is greater (4) the power conditioning is convenient, and can adapt to the different requirements of melting, heat preservation and oven power. (5) The operating frequency changes with the resonant frequency of the load port, and automatically makes the load loop maintain a high power factor, and does not have to be adjusted by increasing or decreasing the load capacitance like the power frequency furnace.
(6) Three-phase balance at the power frequency input end, it is not necessary to set LC three-phase balance device like the power frequency furnace - sample. (7) Under the same output, the capacity of the intermediate frequency furnace is small, thus greatly reducing the floor area, reducing infrastructure investment, and improving the utilization rate of air storage.