I'm evaluating the feasibility of using volumetric induction heating to quickly heat up steel molds. One thing I have come across is that induction heating really only works for surface heating or for 'small' volumes, without really specifying how big or massive my sample can be.
My objective is to heat cylindrical steel molds that are 20 cm in diameter, relatively fast and relatively uniform.
So the question is, how can I calculate how big or massive my sample must be for this technology to work? Is what I'm looking for even feasible?