Zinc die castings are widely used, but due to the very […]
Zinc die castings are widely used, but due to the very active chemical properties of zinc materials, they need to be used for surface treatment. Baking paint and spray painting are commonly used surface treatment processes for zinc die castings. So what are the differences between them?
First, the difference in technology.
Baking paint: Apply three times of primer and four times of topcoat on the base material. Each time the paint is applied, it is sent to a dust-free temperature-controlled baking room for baking.
Spray paint: Grind the woolen cloth on the substrate, then spray paint on it, and let it dry naturally.
Second, the difference in process effect.
Paint: The surface is smooth and the color is the same. The colors are full.
Spray paint: the surface is rough and the color is not full.
Third, the difference in wear resistance.
Baking paint: strong abrasion resistance, the paint can not be rubbed off.
Paint spraying: weak abrasion resistance, cracks, severe peeling of paint film and white skin.
Fourth, the difference in scope of application.
Baking paint is divided into two categories: low-temperature baking paint and high-temperature baking paint. Low-temperature baking paint has few practical applications, and high-temperature baking paint is widely used. Spray paint is a kind of artificial paint, made of nitrocellulose, resin, pigment, solvent and so on. It is usually sprayed evenly on the surface of the object with a spray gun. It is resistant to water and oil, and dries quickly. It is used to paint cars, airplanes, wood, leather, etc. Therefore, the scope of application of the two should be different.
The common process of zinc die-casting is baking paint. After baking paint treatment, the appearance is beautiful, which effectively enhances the metal texture of the product.