Method and device for controlling surface quality of strip steel

The invention relates to the technical field of automatic control in the metallurgical industry, in particular to a method and device for controlling the surface quality of strip steel. The method comprises the steps of: obtaining the operation speed of a process section where the strip steel is located; based on the operation speed, determining an acid pickling flow value of the process section according to a preset formula; adjusting an acid pickling flow based on the acid pickling flow value of the process section; and adjusting the pressure of a coating machine based on the strip steel operation speed of the process section, and then adaptively adjusting the acid pickling flow and a coating according to the change of the operation speed of the process section, so that the acid picklingprocess effect and the coating effect are adjusted along with the matching relationship among the process speed, the acid pickling flow and the coating pressure, the surface control requirement of the strip steel is met, and