Induction shrink fitting

The power required is a function of the weight, target temperature and cycle time to aid selection many manufacturers publish graphs and charts.

In those cases where operational complexities negate the use of a cored mains frequency approach, the standard RF or MF induction heater can be used.

This can be done using the heat content of the material which is normal expressed in kW hours per tonne, the weight of metal to be processed and the time cycle.

Traditionally this process involved lengthy and complex calculations in conjunction with a mixture of practical experience and empirical formula.

When deciding on the correct approach it is often necessary to consider the overall size and thermal conductivity of the work-piece and its expansion characteristics in order to ensure that enough soak time is allowed to create an even heat throughout the component.

There are a huge number of industries and applications which benefit from induction shrink fitting or removal using solid state RF and MF heaters.

In practice, the methodology employed can vary from a simple manual approach where an operator assembles or disassembles the parts to fully automatic pneumatic and hydraulic press arrangements.