What Is Zinc Phosphate Coating?
Zinc phosphate coating is a type of anti-corrosion treatment that forms a protective layer of zinc phosphate on metal surfaces.
This process is commonly used for treating iron and steel surfaces, where it creates a zinc phosphate coating layer with a fine crystalline structure. This layer not only protects the metal substrate from corrosion but also serves as an effective primer for painting, enhancing the adhesion and longevity of the paint.
The process of applying zinc phosphate coating includes cleaning the metal surface to remove grease and rust, immersing it in a phosphate bath to form the zinc phosphate layer, followed by rinsing and drying. This treatment is widely used across various industrial sectors, including in the manufacturing of automotive parts and building hardware. It is particularly valued as a pre-painting treatment, contributing significantly to both the durability and aesthetic improvement of metal products.