The main differences between intermediate frequency furnace and industrial frequency furnace are as follows:
1. The power density of the intermediate frequency furnace is large, and the productivity is high. That is, under the same stirring force and the same capacity, the intermediate frequency furnace can input 3 times the power of the industrial frequency furnace. In other words, the crucible size of the intermediate frequency furnace of the same power is only the industrial frequency One-third the size of the furnace crucible. In a larger furnace, due to the influence of the current and voltage of the inductor line, the input power of the intermediate frequency furnace is about Erlu of the input power of the industrial frequency furnace. Therefore, the average power consumption of the intermediate frequency furnace is lower than the industrial frequency Stove is low.
2. The charge in the intermediate frequency furnace can be emptied every time it is smelted, which is easy to change the type of metal to be melted, and the melting is fast, no need to lift the melt, and it is convenient to use. The industrial frequency furnace needs to leave some remaining molten iron for 4 times when the furnace is lowered. Fuse, otherwise use frit.
3. Under the same productivity conditions, the selected intermediate frequency furnace has a small capacity, so the area is small, the amount of lining materials is small, and the operating cost is low
4. The operation reliability of the intermediate frequency furnace is high and the equipment utilization rate is improved.
5. Compared with industrial frequency furnaces, intermediate frequency furnaces have lower stirring power, less metal erosion on the furnace lining, and longer furnace lining life. In recent years, with the development of thyristor intermediate frequency power supply technology, large-scale high-power intermediate frequency furnaces have developed rapidly. It has been adopted by more and more users and has a tendency to gradually replace small and medium-sized industrial frequency furnaces.