Passivation of galvanized steel sheet is a surface treatment technology
Passivation for galvanized steel sheet is a surface treatment technology
1, the principle of galvanized steel plate passivation
Galvanized steel passivation is a chemical conversion film treatment, which generates an oxide film on the surface of galvanized steel, which can effectively isolate the contact between galvanized steel and corrosive media, thereby preventing corrosion.
II. Passivation method for galvanized steel sheet
There are many ways to passivate for galvanized steelsheets, among which chemical passivation is the most common. Chemical passivation is that galvanized steel is immersed in a specific solution to form an oxide film on its surface. Commonly used solutions are chromate solution, nitrate solution and the like. In addition, electrochemical passivation can also be used, that is, by applying a certain current, the surface of the galvanized steel plate to form an oxide film.
III. Advantages of passivation for galvanized steelsheet
Passivation for galvanized steel sheet has many advantages, such as improving corrosion resistance, prolonging service life and reducing maintenance cost. In addition, passivation for galvanized steel can also improve the adhesion of the coating and make the coating more stable.
IV. Precautions for passivation for galvanized steel plate
Galvanized steel passivation needs to pay attention to some matters, such as choosing the right solution and treatment time, avoiding harmful substances and wastewater pollution during the treatment process. At the same time, we must also pay attention to the safety protection of the operator to avoid being harmed by harmful substances.
In summary, passivation for galvanized steel sheet is a very important surface treatment technology, which can improve the corrosion resistance of galvanized steel sheet and prolong its service life. In order to obtain better results, it is necessary to choose the appropriate treatment method and pay attention to the precautions during operation.
