... handle. 3.work 24h continuously. WH-VI-40KW high frequency induction quenching machine ModelWH-VI-40Worker power Three phrase 380V/50HzWorking voltage ... , knives, scissors, axes, hammers and other hand tools quenching WH-VI-40Output power: 40KWWorking voltage range(AC):Three-phrase four-wire ... our factory for visitation,we are waiting for you!! WH-VI-40KW high frequency induction quenching machine