无取向硅钢异步冷轧织构沿厚度的演变

对2.2 mm厚常化后无取向硅钢(%:0.004C、3.1Si、0.33Al),以速度比为1.19异步轧制到0.5 mm厚,用取向分布函数(ODF)定量研究了异步冷轧织构沿厚度的变化。结果表明:常化后的无取向硅钢板材沿厚度方向的织构类型发生了明显的变化,中心侧反高斯织构较强,在异步冷轧后继续保持了这种状态,而表层和次表层高斯织构在冷轧后消失;冷轧后板材在快慢辊侧的织构类型没有变化,但强度发生明显的变化;异步冷轧织构沿厚度方向呈非对称分布;反高斯织构在慢辊侧的强度高于快辊侧的强度,{111}〈112〉织构出现中心低两侧高的现象,慢辊侧略高于快辊侧。

Evolution of Asynchronous Cold Rolling Texture in Thickness Direction of Non-Oriented Silicon Electric Steel

The normalized 2.2 mm plate of non-oriented silicon electric steel(0.004C,3.1Si,0.33Al)was rolled to 0.5 mm sheet by asynchronous rolling process with a rate of 1.19,and the evolution of asynchronous cold rolling texture in thickness direction was investigated quantitatively by orientation distribution function (ODF) mehtod. Results showed that there was an obvious change of texture in thickness direction of normalized plate of non-oriented silicon electric steel:the anti-Gaussian texture was stronger close to center of thickness which was kept even after asynchronous cold rolling,but the Gaussian texture at surface and sub-surface of sheet disappeared after cold rolling; there was no change of texture type along slow and fast roller side,but the intensity of texture changed obviously; the distribution of asynchronous cold rolling texture was non-symmetric; the anti-Caussian texture in slow roller side was higher than that in fast roller side,the{111}〈112〉texture was low at center and high at sides which at slow roller side was little higher than that at fast roller side.