一、电机硅钢片的情况和问题电机的磁性材料和绝缘材料一样,六十年代以后有较快的发展。为了提高电机的设计水平及制造质量,缩小体积,减轻重量,改进工艺,降低成本,国外采用了新型的硅钢片。日本从1968年起,基本上用冷轧硅钢片(简称冷硅)代替热轧硅钢片(简称热硅)。苏联冷硅的产量占t硅钢片总产量的50％以上。我国在1980年以前,大多使用国产热硅,有少量用进口冷硅。由于热硅制造的工艺落后,厚薄不均,含硅量分布不匀,因此性能不稳定,影响电机 First, the situation and problems of electrical silicon steel Motor’s magnetic materials and insulating materials, like the rapid development after the 1960s. In order to improve the level of motor design and manufacturing quality, reduce size, reduce weight, improve technology, reduce costs, using a new type of foreign silicon steel. Japan from 1968 onwards, basically using cold-rolled silicon steel (referred to as cold silicon) instead of hot-rolled silicon steel (referred to as thermal silicon). The production of cold silicon in the Soviet Union accounted for more than 50% of the total output of silicon steel sheets. Before 1980, China mostly used domestic thermal silica, with a small amount of imported cold silicon. As the thermal silicon manufacturing process backward, uneven thickness, uneven distribution of silicon content, so the performance is not stable, affecting the motor