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1 专利申请范围以重量％计:C≤0.06％、Si≤3.0％、Mn为0.1～1.5％、P≤0.1％、S≤0.015％、Al≤0.30％、N≤0.0040％、B为0.0015～0.0040％,其余为Fe及杂质组成的无取向电工热轧钢板,经冷轧、连续退火,随后以大于40℃/s的冷却速度从780～650℃快速冷却至300℃以下,再经调质轧制。这是一种以此为特征的磁性优良的半工艺型无取向电工钢板的生产方法。以重量％计:C<0.06％、Si≤3.0％、Mn为0.1～1.5％、P≤0.10％、S≤0.015％、Al≤0.30％、N≤0.0040％、B为0.0015～0.0040％,其余为Fe及杂质组成的无取向电工热轧钢板,经冷轧、连续退火后,以不
1 Patent application claims in weight%: C ≦ 0.06%, Si ≦ 3.0%, Mn 0.1 to 1.5%, P ≦ 0.1%, S ≦ 0.015%, Al ≦ 0.30%, N ≦ 0.0040%, B 0.0015 ~ 0.0040%, the balance of Fe and impurities non-oriented electric hot-rolled steel sheet, after cold rolling, continuous annealing, and then more than 40 ℃ / s cooling rate from 780 ~ 650 ℃ rapid cooling to below 300 ℃, Rolling. This is a feature of the magnetic excellent semi-process non-oriented electrical steel production methods. In% by weight: C <0.06%, Si ≦ 3.0%, Mn 0.1-1.5%, P ≦ 0.10%, S ≦ 0.015%, Al ≦ 0.30%, N ≦ 0.0040%, B 0.0015% to 0.0040% Non-oriented electrical hot-rolled steel sheet composed of Fe and impurities, after cold rolling and continuous annealing,