The difference between power frequency electric furnace, intermediate frequency electric furnace and high frequency electric furnace

According to the frequency of alternating current used, induction furnaces can be divided into three types: power frequency electric furnace, intermediate frequency electric furnace and high frequency electric furnace. The difference between medium frequency electric furnace and high frequency furnace is:

1. The frequency of the alternating current used is different: the intermediate frequency electric furnace is a power supply device that converts the power frequency 50HZ alternating current into the intermediate frequency (above 300HZ to 10000HZ); the current frequency of the high frequency furnace is usually between one hundred and five hundred kilohertz under clear conditions. between;

2. The higher the frequency, the lower the heat transmission capacity;

3. The effective hardening depth of the intermediate frequency electric furnace is 2 to 10 mm, and the main application range is parts requiring a deeper hardening layer; the effective hardening depth of the high frequency furnace is between 0.5 and 2 mm.

4. The medium frequency electric furnace can be used to smelt five kilograms to sixty tons of various metals; high-frequency induction heating is suitable for smelting one to five kilograms of precious metals.

5. The medium frequency electric furnace is large in size and mature in technology; the high frequency furnace is small in size, fast in operation and low in price.