Non-oriented silicon steel with good notch corrosion resistance and production method thereof

• Main Authors: ZHAN YUNGAO, QI XUAN, CHENG GUOQING, XIA XUELAN, SHI LIFA, LIU QINGSONG, DU JUN, PEI YINGHAO, LU TIANLIN
• Format: Patent
• Language: Chinese; English
• Published: 25.02.2022
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses non-oriented silicon steel with good notch corrosion resistance and a production method thereof, and belongs to the technical field of electrical steel production. The non-oriented silicon steel comprises the following elements by mass: 0.2-2.7% of Si, 0.15-1.0% of Mn, 0.5-1.0% of Als, 0.1-0.3% of Cr, 0.2-0.5% of Ni, less than or equal to 0.01% of P, and the balance Fe and inevitable impurities. The production process comprises the steps of molten iron pretreatment, converter steelmaking, vacuum treatment, continuous casting, heating, hot rolling, acid pickling, cold rolling, annealing treatment and insulating layer coating. The low-iron-loss and high-magnetic-induction non-oriented silicon steel with excellent notch corrosion resistance is finally obtained through production according to a reasonable component proportion and a matched production process, so that the use requirements of electrical steel can be effectively met. 本发明公开了一种切口耐蚀性良好的无取向硅钢及其生产方法，属于电工钢生产技术领域。本发明的无取向硅钢包括以下质量百分比的