Hi all,
I was build 200khz half bridge inverter (cca 1kW), which have variable matching inductance, tank capacitor and work coil (10mm Cu) + lot of snubbers.So for iron(magnetic) stuff it works ok, (it heat iron very well at resonance), but I have problem with aluminium. It wont heat it (it become only worm 50°C), and inverter have big problems with "ringing" and self destruction .
I suppose that 1kW power is enough for melt some small piece of material but there is happening somethnig and I can't findout what...
I know that aluminium is highly conductiv, and it do not have magnetic characteristics like iron (probabbly is problem there).
Thus someone know which frequency to use for melting aluminium with inductive heater?
Thanks in advance,
Flash
I was build 200khz half bridge inverter (cca 1kW), which have variable matching inductance, tank capacitor and work coil (10mm Cu) + lot of snubbers.So for iron(magnetic) stuff it works ok, (it heat iron very well at resonance), but I have problem with aluminium. It wont heat it (it become only worm 50°C), and inverter have big problems with "ringing" and self destruction .
I suppose that 1kW power is enough for melt some small piece of material but there is happening somethnig and I can't findout what...
I know that aluminium is highly conductiv, and it do not have magnetic characteristics like iron (probabbly is problem there).
Thus someone know which frequency to use for melting aluminium with inductive heater?
Thanks in advance,
Flash