The invention relates to a cold rolled
tin-plated steel plate for multiple printing and painting and a manufacturing method thereof, and aims to solve the technical problems that in the prior art, the
coating on the conventional cold rolled
tin-plated
steel plates for multiple printing and painting can be easily peeled off, the
adhesive force between the
coating and the steel plate is weak, and the color developing effect is bad after printing. The manufacturing method comprises the following steps: washing a hot-rolled hard
tin-plated steel plate with a thickness of 1.8 to 2.3 mm by acid, performing continuous cold rolling, carrying out
continuous annealing, flattening,
electroplating tin on the steel plate, passivating the steel plate, and finally rolling the steel plate to obtain a finished product; wherein the cold rolling
reduction ratio is 85 to 90%, the annealing temperature is 550 to 620 DEG C, the temperature is maintained for 60 to 120 seconds, the steel plate is flattened by two machines, the work roller of the first
machine is an electro-
discharge texturing roller with a Ra of 1.2 to 1.6 um, the rolling force is 500 to 700 t; the work roller of the second
machine is a
grinding roller with a Ra of 0.3 to 0.5 um, the rolling force is 250 to 350 t; the flattening elongation rate is 1 to 2%, and the
passivation is carried out through an electrochemical method and a chemical method. The provided steel plate is mainly used to produce food / beverage cans, which have requirements on multi-
color printing.