Edge drop control technique of silicon steel for UCM tandem cold rolling mills

Taking the d-stand PL-TCM cold rolling mill of Masteel as a research object, an explicit dynamic finite element method was adopted to build a combination simulation model for the roll stacks of the 6-high mill and silicon steel strips. Based on analyzing its edge drop control ability, the method of optimizing the intermediate roll shift position was proposed to reduce the edge drop of silicon steel strips. By using the U-EDC work roll contour which was self-designed and used to edge drop control for the UCM cold rolling mill, a remarkable production result was achieved that the qualification rate of silicon steel strips with the anaverage edge drop less than 5 μm increases from 46.0% to above 99.3%, and high precision shape control has been successfully accomplished in the 6-high mill without work roll shifting.