Galvanized steel and cold-rolled steel require primer and topcoat:

Galvanized steel and cold-rolled steel require primer and topcoat:

Dalian metal surface treatment coil coating is a professional coating used to coat the surface of steel plates and aluminum plates, and to make pre coated coils. It is an essential industrial coating for social development. In order to adapt to the performance characteristics of the coil, the coating film usually has good flexibility and weather resistance. Roll color coating is composed of resin, crosslinking agent, pigment filler, auxiliary agent, and solvent, and is divided into three parts: primer, topcoat, and back coat.

Generally, aluminum only requires a single coating, while galvanized steel and cold-rolled steel require primer and topcoat. Primer, topcoat, and back coat are applied to different parts, and their performance requirements also vary. The performance requirements of the primer for color plates mainly include adhesion, corrosion resistance, processability, etc; The requirements for surface paint mainly include decorative, color retention, weather resistance, scratch resistance, corrosion resistance to various media, processability, etc;

Yellow and Orange: In yellow orange metal surface paint, the preparation of various monochrome and metallic colors is a complex issue, and various series of inorganic and organic pigments can be used. The important inorganic pigments are lead chromium pigments and universal and transparent iron oxide yellow. In light and intermediate yellow colors, the use of metal complex pigments is more meaningful, such as C I. Pigments Yellow 129, 17, and 153. Among all color tone densities, universal and transparent iron oxide yellow are used as matte agents.

These oxidized pigments are economical to use and have strong durability. Choose different levels of rust proof paint according to different external environments. If the water-based rust proof paint chosen cannot fully cope with the erosion of the external environment, the protective effect of the paint film will be greatly affected.

For example, if water-based alkyd anti rust paint is applied in a heavily anti-corrosion and anti rust environment, the effectiveness of the paint film will be difficult to achieve. During construction, water-based anti rust paint, like other anti rust paints, needs to first treat the surface of the metal substrate, such as oil stains, residues, rust, etc., all of which must be cleaned up, otherwise even the best anti rust paint applied will have no protective effect.