Cylinder Bore Quenching Heating Scan inductorBore Induction heating requires effective ring and the work piece bore gap as small as possible, in order to improve efficiency. As the role of cyclic effect, if the rectangular tube to an effective circle, must guide the magnet inserts. Under no circumstances lead magnet, using temperature resin is used as a cooling water passage is an application that allows current to flow only on the copper conductor active circle.