... machines are wildly used in heat treatment, bonding, brazing, welding, forging, melting and heat fitting solution YUELON induction heating ... forging, shaping, warm bending, high frequency shrinkage fitting, heat enveloping, heat sealing, metal desiccating, nut inserting, rotor inserting,etc.D ... The heating of metal by induction has been in industrial use since the beginning of the 20th century, ...