Why does the intermediate frequency furnace work noise?

The noise of the induction coil of the intermediate frequency furnace is generally not more than 75~80 decibels. Acceptable, if it is too large, there is a malfunction!

The noise mainly comes from the vibration of the reactor inside the intermediate frequency power supply, and the noise caused by the vibration of the induction coil in the furnace body of the intermediate frequency furnace. This intermediate frequency sound is the sound that human ears can hear.