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Everything needs maintenance. Medium-frequency induction furnace The same goes for that too.

During the operation of induction heating furnaces, if proper maintenance is not paid attention to, unnecessary problems often arise. Below, we’ll briefly analyze several commonly used methods for maintaining medium-frequency furnaces.

1. Regularly remove accumulated dust from inside the power cabinet, especially from the exterior of the thyristor chips. Use alcohol to thoroughly clean these areas. Although frequency converters in operation typically have dedicated machine rooms, the actual working environment is often less than ideal. In the melting and forging processes, there is significant dust and intense vibration; in the medium-frequency furnace heating and quenching processes, the equipment is usually located near operations such as acid pickling and phosphating, where corrosive gases are abundant. All these factors can damage the components of the equipment and reduce its insulation strength. When dust accumulation is excessive, surface discharge phenomena on component surfaces tend to occur. Therefore, it is essential to pay close attention to regular cleaning to prevent malfunctions.

2. Regularly check whether the hose connections are securely fastened. When using well water or tap water as the cooling source for the equipment, scale tends to accumulate, which can impair the cooling performance. If plastic hoses become aged and develop cracks, they should be replaced promptly. During summer operation, using well water or tap water for cooling in medium-frequency furnaces often leads to condensation. In such cases, it is advisable to consider installing a circulating water system. If condensation becomes severe, the equipment should be shut down immediately. 3. Perform regular maintenance on the equipment, checking and tightening all bolts and nuts throughout the system. If the contacts of contactors and relays are loose or have poor contact, they should be repaired or replaced promptly—do not continue operating them under such conditions to avoid more serious accidents. 4. Regularly inspect the load wiring to ensure it is in good condition and that insulation is reliable. Oxide scale accumulated inside the induction heating coil should be removed promptly. If cracks appear in the thermal insulation lining, the medium-frequency furnace should be replaced immediately. After replacing the furnace lining, pay close attention to inspecting the insulation of the load. The load is located at the operating site, where faults tend to occur frequently yet often go unnoticed. Therefore, strengthening the maintenance of the load and preventing faults from affecting the frequency converter is an essential part of ensuring the normal operation of the equipment. 5. When the quality of the cooling water is poor, key components of the equipment must be regularly replaced or cleaned. For example, if the water-cooling jacket used to cool the thyristors accumulates excessive scale, the cooling effect will be compromised, and the thyristors may easily be damaged.