Abstract

Using steels for commercial electromagnetic purposes produced by the Jordan Steel Group, the current research will look into the effects of grain size and excitation frequency on anomalous losses and the characteristics of the hysteresis curve of the anomalous loss. The final heat treatment of 21 steel samples for commercial electromagnetic purposes, divided into three groups differing in chemical composition, was carried out in the laboratory to determine the influence of electrical resistivity, grain size, and excitation frequency on total, hysteretic, and seek a better understanding of the effect of these variables on the anomalous loss portion. Compare the experimental data to the hypothesized constitutive equations in the literature and study to create the parasitic loss plus hysteretic loss curve using interpolation, superimpose it on the total loss hysteresis curve, then correlate the areas between the curves with anomalous loss and energy dissipation processes. It is possible to determine from micrographs and grain sizes that there was an increase in grain size due to normal brain development and a minor fraction of aberrant growth at high temperatures.

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