Non-oriented electrical steel plate and manufacturing method therefor

Abstract

The present invention discloses a non-oriented electrical steel plate, comprising the following chemical elements in percentage by mass: 0<C≤0.003%; Si: 1.6-3.4%; Mn: 0.1-1.2%; S≤0.003%; Al: 0.1-3.0%; Sn: 0.005-0.2%; Ca: 0.0005-0.01%; O≤0.003%; N≤0.003%; and the balance being Fe and inevitable impurities. In addition, the present invention further discloses a manufacturing method for the above non-oriented electrical steel plate, including the steps of: smelting and casting; hot rolling; intermediate annealing; cold rolling; continuous annealing; and applying an insulation coating to obtain a finished non-oriented electrical steel plate. The non-oriented electrical steel plate is excellent in magnetic property.

Dependencies are inferred from the claim text.