... heating machine,induction heating equipment,induction heating furnace.How to select the frequency of induction. Induction heating equipment, according ... inefficient job, uneven heating, temperature fail, easily lead to damage to the workpiece and so on.Choosing the correct frequency, ... (0.5-10 KHz) 2,heat treatment, shaft, gear, quenching and annealing stainless steel products and put quenching as ...