... 1.environmental protection. 2.easy handle. 3.work 24h continuously. WH-VI-40KW high frequency induction quenching machine ModelWH-VI-40Worker ... usage:1. All kinds of gears, sprockets, shaft quenching;2. a variety of axle, leaf springs, fork, valve, rocker, ball stud ... , knives, scissors, axes, hammers and other hand tools quenching WH-VI-40Output power: 40KWWorking voltage range(AC):Three-phrase four ...