... machine with water cooling system, IGBT design, be used for gear hardening, standard parts heating. Cooling water system for heating machine1. ... 8. Induction heating machine and water cooling system are integrative, it is very easy for you to use. Applications:1 ... welding.3, metal quenching, annealing, quenching, tempering and heat treatment.4, metal forging, hot forming.5, powder metallurgy sintering, ...