Method for eliminating edge warping of silicon steel and silicon steel

The invention relates to a method for eliminating edge warping of silicon steel and the silicon steel. The method comprises the steps that a plate blank is pretreated; the pretreated plate blank is heated, and the preheating section time of the plate blank in a heating furnace is controlled to be not less than 40 minutes; the plate blank is roughly rolled, and the width reduction amount of the side pressure of the plate blank is adjusted to 0.8-1.2% of the width of the finished silicon steel; and a gap is reserved between a flange of a side pressing vertical roller and the edge of the plate blank. According to the method for eliminating the edge warping of the silicon steel and the silicon steel, the edge warping of the silicon steel can be remarkably eliminated, under the condition that the edge warping defect cannot be completely eliminated, the warping position is restrained to occur in the area with the distance being smaller than 8 mm from the edge, process adjustment is simple and easy to operate, exist