Anisotropy of Magnetic Properties in Non‐oriented Electrical Steel Sheets

Abstract

The anisotropy of magnetic properties in non‐oriented electrical steel sheets can be evaluated by measuring Epstein specimens in the radial directions. The magnetic properties measured on ring cores are practically equal to the approximate values of magnetic properties determined by Epstein specimens in the radial directions. Non‐oriented electrical steel sheets with anisotropy are not desirable for motors but are suitable for transformers and fluorescent lamp ballasts. The core loss and magnetic induction as measured with ring specimens are better with non‐oriented electrical steel sheets with anisotropy than with non‐oriented electrical steel sheets with random crystallographic orientation. This phenomenon depends on the texture change of the product.