The MF in our
company name is an abbreviation for mains frequency. In England we use mains instead of
line but it all means the same, you can have all the advantages of Induction Heating
without having to use a frequency changer.
The basic idea of Induction Heating is to produce eddy currents
within the platen or tool to be heated. Eddy currents in electrical equipment in normal
circumstances are to be avoided at all costs, however in our particular instance the more
the better.
We start with the basic platen which consists of two ferrous plates, the base
plate is a high density casting produced to a very exacting specification and the cover
plate is of best quality mild steel. The casting is designed so that it will accommodate
copper coils which are fitted in the slots provided, the cover plate is fitted to the
casting, thus encapsulating the coils within and providing a complete magnetic circuit.
With the application of an alternating current to the coils eddy currents are produced and
because of the resistivity of the coil and cover plates the platen becomes hot. This is a
very abbreviated explanation of why a platen gets hot but we feel that most engineers will
want to know what are the benefits that will be bestowed upon
them when they use MF Induction Heating |