Abstract
Grain-oriented electrical steels show a high degree of anisotropy that favors magnetization in the rolling direction. Magnetization also occurs in other directions in the joint regions that are characterized by interlaminar flux. For direct measurement of such flux behavior, flat sensor elements that do not create additional air gaps have been developed. The present study carried out on a model core. To determine the local flux around the joint rejoin, thin Cu film elements were vapor-deposited on both sides of individual laminates. Normal flux components were detected by frame coil arrangements, and in-plane components were determined by films with tip contacts through the coating. The obtained results showed that in the joint regions, the incoming in-plane flux is converted to interlaminar flux in the overlap region, until a high degree of global saturation is reached; at this stage the flux through the air gaps between the laminates leads to more homogeneous magnetization.
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