Abstract
In this study, electromagnetic induction heating is developed to achieve a rapid mold surface heating. Both a circular coil and a rectangular coil of single turn were properly designed for induction heating experiments on a flat steel mold plate. For heating efficiency comparison, the second circular coil of the same length as rectangular coil and multiple turn coil of rectangular shape in rectangular form were also utilized. Mold plate surface temperature distribution during induction heating process was measured using infrared thermal image system. Simulation technology was also developed by integration of both thermal and electromagnetic analysis modules of ANSYS. Coil current, coil to plate distance and heating time were varied for both experiments and simulations. The capability and accuracy of simulations on the induction heating were verified via experiments. The simulated temperature distributions show reasonable agreement with measured results. In addition, the multiple-turn coil provides better heating efficiency as well as more uniformity in temperature distribution of the heated object.
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