The customer had a need to be able to heat a rotating weldment with limited space between welds. Existing weld preheat inductors that roll on top of the weldment would not fit between the weldments, forcing the customer to rely combustion heating technology (torches).
Due to the safety issues and inconsistency associated with combustion heating, the customer reached out to experts at Ajax Tocco for a solution to their challenges.
Ajax Tocco was able to quickly analyze their process and custom build a compact, non-contact weld preheat inductor that provided pin point heating accuracy, rapid heat rates and repeatable traceable results. The size of the inductor is orders of magnitude smaller than existing weld preheat inductors currently offered for moving/rotating parts. The compact inductor can be located anywhere the weld torch can be positioned.
The 1-inch thick weldment is easily preheated to 400 °F at 18 inches per min. Ajax Tocco air cooled induction weld preheat systems offer the many advantages including: Controlled cooling rates; Increased penetration; Increased feed rates; Improved quality; Reduced consumables; Improved operator comfort; Improved safety; Decreased energy costs.
_{(Source: Ajax TOCCO Magnethermic Corp.)}