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本文论述了极低铁损的晶粒取向硅钢片的生产方法。过去,人们曾研究过磁畴细化技术及其机理,磁畴细化现象的定量解释虽不充分,但已预料这些结果是以同群的原理为基础,即张应力和亚磁畴(亚磁畴主要由自由磋极和内应力产生的横向磁畴组成)之间的互相作用。现已着手使用一种专门设计的退火炉,试图研制具有最优良(110)<001>取向的晶粒取向硅铜片。此方法的特征是在某温度梯度下进行二次再结晶。用这种方法生产并经人工细化磁畴的0.15mm厚的(含3.3％Si)晶粒取向硅钢片,在磁感为1.8T、1.7T、1.5T和1.3T时的铁损分别为O.70W/kg、O.57W/kg、O.41W/kg和O.30W/kg。
This paper discusses the production of very low iron loss grain oriented silicon steel sheet. In the past, magnetic domain refinement techniques and their mechanisms have been studied. Although the quantitative interpretation of magnetic domain refinement phenomena is not sufficient, it is expected that these results are based on the same group principle, that is, the tensile stress and the sub-domains The magnetic domains are mainly composed of transverse magnetic domains that are freely resolved and generated by internal stress. Attempts have been made to develop a grain-oriented silicon copper sheet having the best (110) <001> orientation using a specially designed annealing furnace. This method is characterized by secondary recrystallization at a temperature gradient. The 0.15mm-thick (3.3% Si) grain-oriented silicon steel sheets produced by this method and artificially refined magnetic domains have iron loss at magnetic induction of 1.8T, 1.7T, 1.5T and 1.3T, respectively O.70 W / kg, O.57 W / kg, O.41 W / kg, and O.30 W / kg.