What is the color-coated steel plate made of?

Coated steel plate is a steel plate made by coating alloy, paint or plastic on the surface of low carbon steel plate. Color coated steel plate is one of them, also known as color coated steel plate and color steel plate. Its material is mainly galvanized steel plate or cold-rolled steel plate, and its surface is covered with various protective and decorative coatings. Color coated steel plates are widely used in building exterior wall panels, roof panels, corrugated plates and other fields, including coated steel plates, PVC steel plates, heat insulation coated steel plates, high durability coated steel plates and so on. Let's see what color coated steel plates are made of. 1. What is the material of color coated steel plate?

Coated steel plate refers to the product that tin, zinc, aluminum, chromium, lead-tin alloy, organic paint and plastic are coated on the surface of low-carbon steel plate with good deep drawing performance. Color coated steel plate is a kind of coated steel plate, which is a steel plate coated with color organic paint or film on the surface of galvanized steel plate, aluminized steel plate, tinned steel plate or cold rolled steel plate.

Color coated steel plate is based on galvanized steel plate or cold rolled steel plate, and is coated with various protective and decorative coatings after surface treatment. Commonly used coatings are divided into three categories: inorganic coatings, organic coatings and composite coatings. The structural layers of color-coated steel plate are cold-rolled plate, galvanized layer, chemical conversion layer, primer (primer) and topcoat (front and back paint) from inside to outside.

2. What kinds of color-coated steel plates are there?

Color coated steel plate is called color coated steel plate for short. This kind of board has novel surface color, strong adhesion, good corrosion resistance and decoration, and good processability, so it is widely used in building exterior wall panels, roof panels, corrugated boards, waterproof and airtight boards, corrosion-resistant equipment and components, furniture, automobile shells, flashing boards, etc. According to different structures, color-coated steel plates can be divided into the following types:

1, painted steel plate

The base material is galvanized steel plate, and both sides are coated to ensure its corrosion resistance. The first layer on the front is primer, usually epoxy primer, because it has strong adhesion to metal, and the back is also coated with epoxy resin or acrylic resin; The second layer (surface layer) used to be alkyd resin, usually polyester coating or acrylic resin coating.

2. PVC steel plate

The PVC layer is thermoplastic and the surface can be hot-worked. For example, embossing can enrich the surface texture. In addition, it is flexible, can be bent and other secondary processing, and its corrosion resistance is also very good. There are two types of PVC steel plates, one is produced by coating paste PVC, which is called coated PVC steel plate; The other is to paste the molded printed or embossed PVC film on the steel plate, which is called PVC steel plate with adhesive film.

3, heat insulation coated steel plate

Heat-insulating coated steel plate is made by sticking 15 ~ 17 mm thick polystyrene foam or rigid polyurethane foam on the back of color coated steel plate to improve the performance of coated steel plate, which is mainly used in special fields that need heat insulation and sound insulation.

4, high durability coated steel plate

The durability and corrosion resistance of color coated steel plate can be improved by using high durability coated steel plate on the surface coating of steel plate by using the good aging resistance of fluoroplastics and acrylic resin.