据《特许公报》,平1-43818,1989.9,22报道有两种生产双取向电工钢板的方法:一种是按重量％计,由含Si1.8～4.8％,Al_(sol).0.008～0.048％,其余为Fe及不可避免的杂质所组成,以40～80％压下率冷轧,并在横向以30～70％压下率冷轧,接着在750～1000℃温度作短时退火后,再在900～1200℃温度最终退火。在上述以30～70％压下率最终冷轧后进行短时退火,或在最终退火工序产生二次再结晶之前的升温过程中,进行氮化处理,使材料的 According to “Patent Gazette”, No. 1-43818, 1989.9,22 reported that there are two kinds of production of double-oriented electrical steel method: one is based on weight%, consisting of Si1.8 ~ 4.8%, Al sol .0.008 ~ 0.048%, balance Fe and unavoidable impurities, cold-rolled at a reduction rate of 40 to 80%, cold-rolled at a reduction rate of 30 to 70% in a transverse direction, and annealed at a temperature of 750 to 1,000 ° C for a short time After that, it is finally annealed at a temperature of 900-1200 ° C. The steel sheet is subjected to a short-time annealing after final cold-rolling at a reduction rate of 30 to 70%, or a temperature-rising process before secondary recrystallization in a final annealing step,