Magneto-Thermal Simulation Analysis of the Sheet Metal in the Transverse Flux Induction Heating Process

Abstract

Using the finite element software “ANSYS” to establish the three-dimensional coupled model in magnetic field and temperature field during the process of transverse flux induction heating of ring-shaped heater and Square-shaped sheet steel, this paper studies the distribution laws of the magnetic and temperature fields in the induction heating process. Through studies, the calculations show: 1) The distribution of the magnetic fields and eddy cavities in the sheet workpiece is in the shape of ring; has close ties with the shapes of the coils; 2) The intensities of the coils’ magnetic field and eddy cavities reach the strongest in the projection of sheet metal, and the temperature in the projection part also rises the fastest. For the purpose of verification, the induction heating experimental plat is established to measure the changes of temperatures of numerous points in the plat and to compare the changes with the calculations. Via the comparison between the simulation results and the experimental measurements, the results of numerical simulation are confirmed reliable, and can be used as the theory and the experimental basis for the design of the induction heating system.