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This small-sized medium-frequency induction heating equipment is used for welding and melting gold, silver, copper, iron, and aluminum. Medium-frequency induction enables rapid temperature rise: during welding, the solder melts evenly, ensuring firm connections; during melting, it boasts high heating efficiency, with each furnace taking only 20-30 minutes. Equipped with overcurrent and overvoltage protection, it is easy to operate and covers an area of less than 1 square meter, making it suitable for laboratory research and small-scale metal processing.
This medium frequency induction heating system is designed around the series-resonant inverter structure, consisting of a MF power supply, a compensation capacitor box, and a customized induction coil. It is a high-efficiency, cost-effective solution widely used in metal melting, heat treatment, and thermal fitting applications.
| Feature | Description |
|---|---|
| 1. Power Structure | Series-resonant inverter topology using IGBT/MOSFET technology |
| 2. Frequency Range | 1–20 kHz, ideal for forging, melting, annealing, surface hardening |
| 3. Capacitor Box | Provides capacitive compensation for inductive load, improves power factor |
| 4. Induction Coil | Acts as both inductor and heating element, typically made from 3–10m copper tubing |
| 5. High Efficiency | Operates at resonance point for maximum energy transfer and minimal losses |
| 6. Compact System | Integrated MF power + capacitor + coil makes it easy to deploy and maintain |
| 7. Application Flexibility | Suitable for melting, hot fitting, sintering, forging, spraying & more |
The system works on LC series resonance, where the induction coil (L) and capacitor box (C) form a resonant circuit. At resonance, impedance is minimized, and current is maximized—allowing efficient energy transfer to the workpiece via eddy current heating.
However, the design also has several limitations:
