| 摘要 |
PURPOSE: A non-oriented electrical steel sheet with excellent magnetic property and a manufacturing method thereof are provided to prevent magnetic properties from becoming depleted. CONSTITUTION: A non-oriented electrical steel sheet with excellent magnetic property is made of Al 0.7~2.7wt.%, Si(Silicon) 0.2~1.0wt.%, Mn 0.2~1.7wt.%, B(Boron) 0.001~0.004wt.%, N(Nitrogen) 0.001~0.004wt.%, S(Sulfur) 0.0005~0.004wt.%, residual Fe(Iron), and inevitable impurities. The Al, Mn, N, and S satisfy the following equations. A first equation is {[Al]+[Mn])Δ2.0. A second equation is 0.002Δ{[N]+[S]}Δ0.006. A third equation is 230Δ{([Al]+[Mn])/([N]+[S])}Δ1,000. The B satisfies the condition; 0.5Δ[B]/[N]Δ1.3. |
