NON-ORIENTED ELECTRICAL STEEL SHEET WITH HIGH MAGNETIC FLUX DENSITY AND MOTOR Russian patent published in 2017 - IPC C22C38/06 C21D8/12 H01F1/16 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy, namely to the non-oriented electrical steel sheet of 0.10-0.50 mm thickness which is used as a material for the core of the drive motor and an electric generator. The sheet is made of steel of the following chemical composition, wt %: C not more than 0.010, Si 1.0-7.0, Mn 0.001-3.0, solution of Al 0.0001-3.5, P 0.01-0.2, S not more than 0.010, N not more than 0.010, the rest is Fe and unavoidable impurities. The ratio (P₁₂₀/ Fe₇₀₀) of the peak height P₁₂₀ P at electron energy of 120 eV to the height of Fe₇₀₀ peak Fe with electron energy of 700 eV in the differential spectrum of Auger electrons produced by analysing the broken surface of the grain boundary by Auger spectroscopy is not less than 0.1.

EFFECT: high magnetic flux density and excellent iron loss in the high frequency region.

9 cl, 5 dwg, 3 tbl