1. Equipment overload

The working principle of induction melting furnaces is to heat metals through electromagnetic induction. When the mass of the load (i.e. the metal to be heated) is too large or too complex, the power of the electric furnace may not meet expectations. Overweight loads require higher power input to achieve heating, but if the design power or power supply capacity of the equipment is insufficient, it cannot provide enough energy, resulting in low power.

Treatment method: Check the mass and shape of the load, and try to avoid excessive or uneven loads. If the load is too heavy, you can try to heat in batches, or optimize the heating process so that the electric furnace can operate within a smaller power range. For the electric furnace itself, confirm whether the power supply capacity matches the load.

2. Power supply failure

The power supply part of the induction melting furnace is the core of controlling the power output of the electric furnace. If the power supply fails, such as damage or aging of the transformer, rectifier, power module, etc., the output power of the electric furnace may not be increased, or even fail to work properly.
Handling method: Check and maintain the power supply regularly, especially check the working status of the transformer, the voltage output of the rectifier and other key components. For faulty power supply components, they should be replaced or repaired in time.

3. Damage or aging of the lining of the induction melting furnace

The lining of the induction melting furnace plays the role of heat insulation and protection of the electric furnace structure, but with the increase of use time, the lining will wear, crack or age. If the lining is severely damaged, it may cause uneven temperature distribution in the furnace, affecting the heating effect, and thus the power cannot be effectively increased.

Handling method: Check the use of the lining regularly, especially whether there are obvious cracks or shedding. For linings with severe damage, they should be replaced in time to ensure the uniformity and efficiency of heating in the furnace.

4. Cooling system failure

The reason why the power of the induction melting furnace cannot be increased may also be the failure of the cooling system. The cooling system of the medium frequency electric furnace is used to maintain the temperature of various components of the electric furnace to prevent damage caused by overheating. If the cooling system fails or the coolant flow is insufficient, some components of the electric furnace may overheat, thus limiting the power increase. Especially when running at high power, the state of the cooling system has a greater impact on the performance of the electric furnace.

Handling method: Regularly check the working condition of the cooling system, especially the flow and temperature of the coolant, to ensure that the coolant can flow smoothly. Check whether the cooling pipe is blocked or leaking, and clean or repair the damaged part in time.

5. Inverter failure

The inverter of the induction melting furnace is responsible for adjusting the frequency of the input current to control the power output of the electric furnace. If the inverter fails, it may cause unstable frequency control, fail to provide sufficient power, and even cause the electric furnace to fail to heat normally.

Handling method: Check whether the inverter is set correctly and ensure that its operating frequency matches the design of the electric furnace. Maintain the inverter regularly to check for damaged circuits or loose connections. If the inverter is damaged, it should be replaced or repaired in time.