| 摘要 |
A non-oriented magnetic steel sheet that contains, by mass, up to 0.005% carbon, 2-7% silicon, 0.03-3% manganese, up to 3% aluminum, up to 0.2% phosphorus, up to 0.005% sulfur, up to 0.005% nitrogen, 0.0001-0.0005% selenium, and 0.0005-0.005% arsenic, with the remainder comprising iron and unavoidable impurities. Said non-oriented magnetic steel sheet exhibits an iron loss (W15/50) of no more than 3.5 W/kg when excited with 1.5 T at 50 Hz and exhibits excellent iron-loss characteristics prior to a punching process in which the quotient (x/t) of the amount of sag (x, in mm) that occurs when the steel sheet is punched and the thickness (t, in mm) of the sheet is less than or equal to 0.15. Furthermore, the degradation in iron-loss characteristics from the punching process is minimal. |
