| 摘要 |
PURPOSE: A non-oriented electrical steel sheet with excellent magnetic property and a manufacturing method thereof are provided to improve magnetic properties by increasing the distribution density of coarse complex inclusions. CONSTITUTION: A non-oriented electrical steel sheet with excellent magnetic property is made of Al(Aluminum) 1.0~3.0wt.%, Si(Silicon) 0.5~2.5wt.%, Mn(Manganese) 0.5~2.0wt.%, 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 condition equations. A first condition equation is {[Al]+[Mn])Δ3.5. A second condition equation is 0.002Δ{[N]+[S]}Δ0.006. A third condition equation is 300Δ{([Al]+[Mn])/([N]+[S])}Δ1,400. The fraction of a cube crystal texture of a steel section is more than 3%. |
