As a crucial piece of equipment in the modern metallurgy and casting industries, the stability of the medium-frequency furnace’s electrical system is particularly important for the entire production process. However, the reactor— a key component in the furnace’s electrical system— often burns out due to various reasons. This not only causes equipment downtime but may also lead to serious safety accidents. Understanding the reasons behind frequent reactor burnout in medium-frequency furnaces and taking preventive measures at an early stage is essential to achieving safe production.
The design parameters of the reactor must match the operating current, voltage, and frequency of the medium-frequency furnace. If the reactor’s capacity is underdesigned and cannot withstand the current generated by the furnace under high load, long-term overloading will cause the reactor to overheat and burn out. In addition, the wiring method between the reactor and other electrical components must also be properly designed. Poor wiring or excessive contact resistance can lead to local overheating, further increasing the reactor’s thermal load and accelerating its aging and damage.
During long-term operation of the medium-frequency furnace, the reactor is easily affected by environmental factors such as dust and oil stains. These impurities accumulate on the surface or inside the reactor, causing poor heat dissipation and triggering overheating issues. Furthermore, if maintenance personnel fail to regularly inspect the reactor’s connecting wires and insulation status, problems such as aging and loosening may occur, increasing the operational risk of the reactor. The reactor’s cooling system also requires regular inspection and cleaning to ensure effective heat dissipation and prevent burnout due to excessive temperature.
If the medium-frequency furnace is installed in a high-temperature, high-humidity, or dusty environment, the reactor’s heat dissipation efficiency will be significantly reduced, causing it to operate at high temperatures for a long time and increasing the risk of burnout. In addition, excessive humidity can cause the insulation materials inside the reactor to absorb moisture, reducing insulation performance and leading to short circuits and burnout. In such cases, efforts should be made to improve the equipment’s operating environment— for example, installing air conditioning or ventilation systems to lower ambient temperature and humidity, and reducing the impact of dust on the equipment. Additionally, regularly replacing the reactor’s protective cover or enhancing its sealing can improve its ability to withstand harsh environmental conditions.
The operation of the medium-frequency furnace must strictly comply with the equipment’s usage specifications, especially during startup and shutdown, where operators must follow the correct procedures. Excessive current during startup or frequent on-off cycles of the furnace will increase the reactor’s load, leading to premature aging. Moreover, during the furnace’s operation, if operators fail to monitor the reactor’s working status in a timely manner and ignore abnormal changes in key parameters such as temperature and current, it is also easy for the reactor to develop faults.
The frequent burnout of reactors in medium-frequency furnaces is often the result of the combined effect of multiple factors. To effectively prevent such faults, enterprises should take comprehensive measures from multiple aspects— including design, maintenance, environment, and operation— to improve the reliability and durability of the medium-frequency furnace’s reactor and ensure the safe and stable operation of the equipment.
.webp)
.webp)
