Kat Controls make High Frequency Inline Induction Preheaters are designed to meet the needs of continuous production systems. They are used in extrusion lines for insulating wire conductors to improve the adhesion of insulation material on the conductor. It ensures an even flow of insulating as the temperature of the conductor remains constant throughout the run.
The Preheater operates as a completely independent standalone unit. It works on a principle of Induction heating.
Preheater are featuring dynamic and free running pulleys of shorting (conductive) and insulating (with Ceramic Rings) type. An alternating electromagnetic field is applied from a solid state electronic power controller with accurate and continuous line speed feedback. It provides correct secondary voltage as per desired settings and in turn, a correct preheating temperature. The wire or conductor to be heated, passes through the induction coils between shorting and insulating pulleys.