Production method of environment-friendly corrosion-resistant galvanized sheet

The invention discloses a production method of an environment-friendly corrosion-resistant galvanized plate. The production method comprises the steps of cold rolling raw material uncoiling, welding, cleaning, open fire heating, radiation heating, protective cooling, hot galvanizing, water cooling, straightening, passivating, coil dividing and coiling. And the passive film is coated by using a four-roller roller coating process. The invention aims to provide a production method of an environment-friendly corrosion-resistant galvanized plate, and determines a process for coating an environment-friendly passivation film on a galvanized steel plate after plating. According to the method, the passivation process of the environment-friendly passivation film is determined, the process parameters such as the formula of an environment-friendly passivation solution, the speed ratio of a dipping roller to a coating roller, the pressure and the coating drying temperature in the roller coating passivation process are det