How to Repair an Induction Furnace Quickly

The induction heating furnace is a non-standard induction heating equipment commonly used in the mechanical thermal processing industry, so it is very important to ensure the normal maintenance and repair of the induction heating furnace. Everyone thinks that electromagnetic induction heating cannot be seen or touched, and it feels very mysterious. In fact, the maintenance of the intermediate frequency furnace is not difficult, because the whole set of induction heating furnace equipment is only those few things. Here, we summarize some induction heating furnace maintenance information, hoping to help everyone, please point out the inappropriateness.

1. First of all, the induction heating furnace needs to be cooled during operation, and the thyristor, reactor, capacitor, water-cooled cable and induction coil must be cooled by circulating water. Therefore, the most common problem is that the cooling water cooling effect is not good, causing the temperature to rise, making the thyristor burn silicon, burn the reactor, burn the capacitor, and destroy the insulation layer of the inductor coil.

2. It is necessary to check the water flow of the cooling water circuit. Many people here have a misunderstanding. They think that the high water pressure in the cooling water circuit must have a large cooling water flow, but this is not the case. Due to the scaling of the cooling water pipeline or the blockage of the pipeline by debris, the water flow is small and the water pressure is large, which often causes the water temperature to be too high to burn the components.

3. The most easily damaged parts of the induction heating furnace are the thyristor, the capacitor, and the water cable. Among them, the short circuit of the thyristor is the best one to check, but be careful of the soft breakdown of the thyristor. The soft breakdown cannot be measured on the road. The general phenomenon of the soft breakdown of the thyristor is the sound of the reactor, which is very heavy. In addition, the capacitors are generally short-circuited and the terminals are broken; the shell has bulged and I have also tried to repair the capacitors, and found that the repaired capacitors are broken after a long time. The inspection of the capacitor boost will be better to see; The failure rate of the water cable is: open circuit, and it is easiest to ignore when it seems to be broken.

4. After the induction heating furnace failure maintenance personnel arrive at the scene, they must first communicate with the operator to understand the failure phenomenon, do not rush to repair, first observe and judge the fault location, whether there is blackening or damage, and then listen to the fault sound, and then again Instrument inspection, and finally determine the cause of the failure. For example: the operating sound of the reactor is very heavy and dull. Generally, there is a problem with the rectifier thyristor or the rectifier part; if the sound of the reactor is screaming, it is generally a problem with the inverter thyristor.

5. Solve the fault of the induction heating furnace according to the above procedures, generally 75% of the problems of the induction heating furnace can be solved.