INDUCTION HEATERS AND MELTERS
Induction heaters heat an electrically conducting object (usually a metal) by electromagnetic induction, where eddy currents (or Foucault currents) are generated within the metal and resistance leads to Joule heating of the metal. An induction heater consists of an electromagnet, through which a high-frequency alternating current (AC) is passed.
Induction heating machines have a wide range of applications:
Induction Furnace: Ideal for melting and alloying a wide variety of metals with minimum melt losses.
Induction Welding: A similar, smaller-scale process is used for induction welding. Plastics may also be welded by induction.
Induction Cooking: An induction coil in the cook-top heats the iron base of cookware by cyclic magnetic induction.
Induction Brazing: Often used in higher production runs. It produces uniform results and is very repeatable.
Induction Sealing: Used in cap sealing of containers in the food and pharmaceutical industries.
Plastic Processing: Used in plastic injection molding machines. Heat is directly generated in the barrel of the machine, reducing warm-up time and energy consumption.
Rotalab also offers vacuum induction melting (VIM) systems which are used in secondary metallurgy applied for refining treatment in the liquid state and adjustment of chemical composition and temperature.