Microstructure and Texture in Hot Rolling Strip of Low Temperature Oriented Silicon Steel

The influence of hot-rolled process parameters on the microstructure and texture of Fe-3.2%Si low temperature hot rolled grain-oriented silicon steel were researched by hot simulation experiment machine,light microscope and X-ray diffractometer.The results show that,Fe-3.2%Si silicon steel is rolled by the technology with a temperature of rough rolling of1110℃,finish rolling of 880℃,coiling with the speed of 10℃ /s,and then cooled to room temperature with air.The microstructure of hot-rolled silicon steel is obviously inhomogenous along the thickness,and it is beneficial for developing improved secondary recrystallization.For hot rolled plate,normative plate and cold-rolled sheet,the textures which are the same species are concentrated in γ orientation line with a different orientation density,so it indicates that the textures in γorientation line can be inherited.During the process of hot and normalizing,the rolling textures density significantly decreases,but the textures density significantly increase after the second cold rolling.So the rolling deformation can contribute to the formation of texture and increase the texture intensity.