The invention discloses a rolling method for producing a wide-width packaging aluminum plate. The rolling method mainly comprises the steps that (1), the specifications of a
skin material and a core material are determined and the width and length of the
skin material are smaller than that of the core material, and the upper and lower surface of the core material are coated with and fixed to the
skin material to form composite ingots; (2), the composite ingots are heated by a two-stage type heating institution; (3), a mill roll is preheated to the
working temperature; and (4), rolling is performed, specifically, primary longitudinal rolling, transverse rolling and secondary longitudinal rolling are performed in sequence. By controlling an
emulsion at the initial stage of rolling and matching the key process parameters such as the rolling reduction of each pass and the
rolling speed, the three factors are closely matched to ensure the smooth operation of rolling, broadsiding and
coating; and the width of the packaging aluminum plate is not limited by the width of the
ingot casting. Compared with an existing conventional process, the rolling method can produce wider packaging aluminum thin panels, shortens the
processing process, improves the production efficiency, improves the surface quality, and achieves the goal of reducing the defects such as
emulsion marks, color differenceand black strips.