With induction hardening like the kind used on the work piece in this analysis, the main requirement is to heat a given surface uniformly and increase rigidity. Eddy currents generated by the high-frequency varying magnetic field occur in the surface of the work piece. Examining these phenomena in detail requires handling the phenomena that occur in the work piece itself in a numerical analysis based on the finite element method (FEM).
This Application Note shows an example of an evaluation performed by creating a numerical analysis model, analyzing the elevated temperature process, and seeing whether or not the desired temperature distribution is achieved.
Use this analysis when obtaining the optimum coil geometry, current conditions (power supply frequency, current value), and rotation speed.
Temperature Distribution, Temperature Variations, Joule Loss Density Distribution
This section shows the temperature distribution in fig. 1, temperature variations in fig. 2, and the joule loss density distribution in figures 3 and 4 as analysis results of the crank shaft’s high-frequency induction heating.