Medium frequency induction furnaces are specialized equipment used for melting metals through the process of electromagnetic induction.
These furnaces operate by converting three-phase alternating current (AC) into direct current (DC), then back into an adjustable medium frequency AC.
This AC is supplied to a capacitor and an induction coil, generating a high-density magnetic field.
When this field cuts through metal material within the coil, it induces a large eddy current in the metal, heating it due to the metal's inherent resistance.
5 Key Points to Know About Medium Frequency Induction Furnaces
1. Working Frequency Range
The working frequency of medium frequency induction furnaces typically ranges from 50 to 10,000 Hz.
This makes them suitable for smelting both ferrous and non-ferrous metals.
2. Advantages Over Other Melting Equipment
Medium frequency induction furnaces offer several advantages over other types of melting equipment.
These include higher thermal efficiency, shorter melting times, reduced burning of alloy elements, a wide range of melting materials, minimal environmental pollution, and precise control over the temperature and composition of the molten metal.
3. Principle of Operation
The principle of operation is based on electromagnetic induction.
Electric energy is transferred to the metal via induction coils, converting the energy into heat to melt the metal.
The coils do not directly contact the metal; instead, energy is transferred through electromagnetic induction.
This method allows for efficient heating and melting, with the added benefit of easy temperature control and high production efficiency.
4. Versatility and Applications
Medium frequency induction furnaces are versatile and find applications in various industries.
These include heating forging of standard parts, melting of various metal materials, and heating of motor rotors for matching.
They are also known as medium frequency electric furnaces due to their heating frequency range, which is typically between 150 and 8000 Hz.
5. Benefits of Medium Frequency Induction Furnaces
These furnaces are integral in processes that require precise heating and melting of metals.
They contribute to their widespread use in industrial settings.
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