How to distinguish the difference between medium frequency induction heating machine and high frequency induction heating machine?

How to distinguish the difference between medium frequency induction machine and high frequency induction heating machine? Many people are still confused about this and don't know what the difference is between them. The mystery is revealed. Please see below.

How to choose the frequency of the medium frequency induction heating machine: The general working frequency of the medium frequency induction heating machine (depending on whether you use it for warm forging or melting) is 1K-10K. The 20K--100K segment is generally called super audio frequency. 100K-500K is the high frequency band, and then Going up is ultra-high frequency. The operating frequency determines the different devices used. Medium-frequency fission circuits generally use thyristors, and high-frequency generally use MOS field effect tubes\electron tubes with faster switching speeds.

Effect: Different frequency ranges have different adaptation ranges. The higher the frequency, the stronger the skin effect, and the shallower the depth of the induced current flowing into the workpiece. Therefore, high-frequency induction is widely used in surface quenching\welding. And medium-frequency work The lower the frequency, the deeper the current transmission depth. Therefore, it is widely used in warm forging and smelting. However, high-frequency smelting is still required for the smelting of some rare metals due to their low magnetic permeability.

Medium frequency induction heating machines and high frequency induction heating machines are mainly used to process different types of original parts.

The oscillation frequency of medium frequency induction heating machines is generally 0.5-20KHZ

The oscillation frequency of high-frequency induction heating machines is generally 20-80KHZ. There are many types of industrial furnaces used in the mechanical industry. In the casting workshop, there are open hearth furnaces, cupola furnaces, crucible furnaces, induction furnaces, resistance furnaces, electric arc furnaces, vacuum furnaces, etc. for melting metal; in the forging workshop, there are various heating furnaces for heating steel ingots or billets before forging and heat treatment to eliminate stress. furnace; in the heat treatment workshop, there are various annealing, normalizing, quenching and tempering intermediate frequency furnaces to improve the mechanical properties of the workpiece; in the welding workshop, there are pre-pressing steel plate heating furnaces and post-weld heat treatment furnaces; in the powder metallurgy workshop, there is also sintering Metal heating furnaces, etc.