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　　Medium-frequency induction furnaces are commonly used smelting equipment in the industry. They feature a compact structure, strong overload capacity, high melting efficiency, and energy-saving performance. They are frequently employed for smelting both non-ferrous and ferrous metals. The operational performance of medium-frequency induction furnaces is excellent—this much is well known to many people. However, most people aren't very familiar with their underlying principles and structural design. Next, we’ll explore these aspects in greater detail. Medium-frequency induction furnace manufacturer This introduces the principle and structure of medium-frequency induction furnaces, helping to deepen your understanding of these furnaces.

　　I. Principle of Medium-Frequency Induction Furnace

　　The medium-frequency electric furnace is based on the principle of electromagnetic induction and relies on a medium-frequency power supply at its core to convert three-phase alternating current into single-phase medium-frequency current. The medium-frequency electric furnace comprises a medium-frequency induction melting furnace, whose basic internal structure includes a rectifier, an inverter, and a furnace chamber. The rectifier converts alternating current into direct current, enabling the storage of DC energy. The inverter, on the other hand, takes the DC current and transforms it into alternating current at either the required frequency or a specified frequency. The furnace body refers to the portion of the furnace that receives the AC power supply.

　　 Medium-frequency induction furnace manufacturer It was also pointed out that, in addition, the energy storage in an intermediate-frequency furnace involves storing DC energy in capacitors—exactly the same principle as when a capacitor is instantly discharged upon power failure. Furthermore, in the parallel circuit of an intermediate-frequency furnace, whether it’s the induction coil, the capacitor, or the inverter, all components share the same voltage. An intermediate-frequency furnace is a power supply device that converts 50-Hz industrial-frequency AC power into intermediate-frequency power (ranging from above 300 Hz up to 10,000 Hz). It consists of several key components, including a frequency conversion unit, the furnace body, and front-end control systems.

　　II. Structural Configuration of Medium-Frequency Induction Furnaces

　　1. Medium-frequency power supply

　　It consists of two main parts: the intermediate-frequency power supply cabinet and the capacitor compensation rack. As the capacity of the equipment increases, the supply voltage of the intermediate-frequency power supply also varies. Common voltages domestically include 380V, 575V, 660V, 750V, 950V, and 1100V. Its power ratings are categorized into three levels: Class III, Class VI, and Class XII.

　　The manufacturer of medium-frequency induction furnaces points out that the medium-frequency power supply cabinet consists of a main switch, a rectifier, an inverter, a main control board, and a smoothing reactor. The main control board functions like the human brain. Currently, constant-power main control boards are commonly used. This type of board supports both wave-soldering and manual soldering; among these, wave-soldering offers stable process performance and a low failure rate.

　　2. Furnace Section

　　The furnace sections of medium-frequency furnaces mostly employ aluminum-shell induction furnaces, stainless steel-shell induction furnaces, and hydraulic yoke-steel-shell induction furnaces. Tilt-and-swing reducers are used for tilt-and-swing furnaces and hydraulic tilt-and-swing furnaces.

　　3. Transmission

　　The transmission mechanism includes mechanical or hydraulic devices for the movement of the furnace lid, as well as the tilting and resetting of the furnace body.

　　4. Water-cooling system

　　The water-cooled components include the medium-frequency power supply, sensors, capacitors, busbars, flexible cables, and more. To conserve water, a recirculating cooling system is typically employed.

　　That’s all above. Medium-frequency induction furnace manufacturer An introduction to the principles and structural components of medium-frequency induction furnaces—hope this is helpful to you.