Induction heating is a form of non-contact heating in which the heat is induced electromagnetically instead of by using a heating element.
Traditionally, induction heating has been used for soldering and brazing and other welding processes, but it is becoming more popular for welding preheating, especially for businesses that conduct a high volume of welding.
This process has several advantages:
Lower cost of welding consumables
Improved heat quality
Uniformity
Reliability
Ease of use