How to choose current frequency for medium frequency electric furnace?
1, the second principle of current frequency selection is that the sensor point efficiency should be high, otherwise the energy consumption is too high, the efficiency is too low.
2, noise, oscillation system power factor, electromagnetic action and other factors will affect the choice of current frequency.
3, the first principle of current frequency selection is penetration heating. In the case of a certain depth of current, there will be two heating states: one is penetration heating and the other is heat conduction heating. When in mass production conditions, no matter from the aspects of energy saving, labor productivity, surface superheat and so on, we should choose penetrating heating.
4, the second principle of current frequency selection is that the current frequency can not be too low, otherwise when the current penetration depth and hardened layer ratio is too large, the sensor is easy to damage.
