Application of transistor on double-frequency induction hardening equipment

The transistor which changed the work-frequency of electric power into the low-intermediate frequency was introduced,and it was successful applied in double frequency(low-intermediate frequency) induction hardening equipment of the cold roll.The double frequency(low-intermediate frequency) induction hardening equipment made in China was also compared with that of Belgium.The results show that the induction hardening equipment made in China can get good quality,and reach to the level made in Belgium.