Miller Electric Mfg. Co. (www.millerwelds.com) introduced an induction heating system that uniformly and quickly preheats joints to be welded or provides stress relief. The company says minimal setup and instruction time is needed to operate ProHeat 354. Induction heating electromagnetically induces heat into a metal part. The company says the system can be used as an air-cooled system for temperatures to 400 degrees or as a liquid-cooled system for temperatures to 1,450 degrees.