MF Induction Platens

Principles of Operations:

MF induction heating platens, feature two plates: the cover plate and the coil plate. The coil plate utilises a series of copper-wound induction coils. When alternating currents are applied, they induce eddy currents throughout both plates. 

Simultaneously, the platen’s resistance to these currents generates heat throughout the entire mass. This delivers two benefits as a result:

• The platens heat the whole mass simultaneously and at the same rate.
• The process causes an instantaneous change throughout the mass when you turn a control instrument on or off.

How MF Induction Heating Platens Work:

Our platens speed up compression moulding, reduce rejects and save on energy requirements.

The platens generate even, consistent heat simultaneously throughout the entire mass. As a result, this process eliminates the problems of under and over-curing modules.

In contrast, resistance heating requires superheating an element, which drags the surrounding temperature. This often causes hot spots or uneven fluctuations.

Our platens deliver power savings because they dissipate 25% less power when hot than at cold switch-on. This result occurs because the primary coils’ resistance increases with temperature. You can also observe this increased resistance throughout the mass of the coil plate.

Consequently, this reduces the magnitude of eddy currents and automatically lowers the current drawn from the power supplies.

Refer to this chart for a comparison of resistance and induction heating. Comparing amp draw vs temperature:

Advantages of utilising Induction Heating are as follows:

• There is a greater rate of heat transference.
• There is no layer of thermal insulation. As a result, there is no interruption of the flow of heat from source to mass.
• Rapid heating is made possible by the possibility that the supply of power is more than the required amount.
• This loading can be installed without any detrimental effects.

• The source stores very little heat.
• Furthermore, the coil shuts down when the mass meets the required temperature.
• Properly proportioning the primary circuit generates the heat uniformly throughout the mass.
• Furthermore, we can locally centre this heat on a desired part.

The data demonstrates a positive correlation between using induction heating and achieving higher temperatures with a lower Amp Draw.

Overall, induction heating saves you money, operates longer, runs more efficiently, and ensures safer working conditions.