NON-ORIENTED ELECTRICAL STEEL, PREPARATION METHOD THEREFOR AND USE THEREOF

Disclosed are a non-oriented electrical steel, a preparation method therefor and the use thereof. The chemical components and the mass fractions thereof of the non-oriented electrical steel are: C ≤ 0.0040%; Si: 1.8-4.00%, Al: 0.30-1.20%; Mn: 0.40-1.0%; Ni: 0.50-2.0%; Cr: 0.50-2.0%; Sn: 0.010-0.10%; S ≤ 0.0020%; N ≤0.002%; V ≤ 0.005%; and Ti ≤ 0.005%; P ≤ 0.002%, the sum of the mass fractions of Ga and Hf being ≤ 0.7%, and the balance being Fe and inevitable impurities. By using the composition design to cooperate with a preparation process, the obtained non-oriented electrical steel has excellent iron loss, magnetic induction and mechanical performance, there is no strip breakage during production, and the reliability and high efficiency of an electric motor core are improved. La présente invention concerne un acier électrique à grains non orientés, un procédé de préparation associé et une utilisation de celui-ci. Les composants chimiques, et leurs fractions massiques, de l'acier électrique à grains non orie