... voltage,over current,lack of water,phase fail,over hot,etc. 2).Digital auto-control,it has the function of manual,automatic ... sure the machine work continuously.3..Applications of kechuang high frequencyHeat treatingVarious kind of automobile parts,motorcycle parts,hardware ... seal,powder applicating,embedding plastic to metal,etc. Full Automatic Medium Frequency Induction Braze Welding Machine XZ-50B