Method of producing 3004 aluminium alloy strips in cast-rolling mode

The invention relates to a method of producing 3004 aluminium alloy strips in a cast-rolling mode, and belongs to the field of aluminium manufacturing. The method includes the following ordinal steps: casting and rolling to obtain strip billets; annealing cast coils; carrying out cold rolling to obtain end product width; cleaning an upper tension leveling line; annealing an end product; straightening and withdrawing; dividing and rolling; testing, packaging and storing. When casting and rolling of the strip billets are carried out, according to the chemical components of 3004 aluminium alloy, aluminium alloy melt is smelted, and then the strip billets are formed by casting and rolling. The parameter configuration of a cast roller with the strip billet specification of 7.0 * (1250-1300) mm is that the diameter of the cast roller is 780-820 mm, the crown of the cast roller is 0.15-0.30 mm, the gap of the cast roller is 5.0-5.3 mm, and the roughness of the cast roller is 0.6-0.7 micrometers. The technological pa