無方向性電磁鋼板における理論限界性能の検討

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  • Theoretical Optimum Magnetic Properties of Non-oriented Electrical Steel Sheets
  • ムホウコウセイ デンジ コウハン ニ オケル リロン ゲンカイ セイノウ ノ ケントウ

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  This paper discusses the possibility of realizing improvements in magnetic properties of non-oriented electrical steel sheets. In such sheets, a random {100} texture can increase flux densities and decrease iron losses, and the increase in flux density at 5000 A/m (B50) may be over 0.2 T, while decrease ratio of iron loss at 1.5 T and 50Hz (W15/50) may be more than 1/3. On the other hand, the improvement of iron loss at 1 T and 400Hz (W10/400) due to a random {100} texture may be little, but the texture can increase flux densities, and the increase in flux density at 800 A/m (B8),where motors are designed, may over 0.4 T. It is important to improve metallurgy and rolling technology in manufacturing process in order to realize the theoretical optimum magnetic properties of non-oriented electrical steel sheets.

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