How about the quality of color steel coil

Summary: Color steel coil is a composite material, also known as color coated steel plate, which is made of strip steel after con...
Color steel coil is a composite material, also known as color coated steel plate, which is made of strip steel after continuous chemical transfer treatment such as surface degreasing and phosphating on the production line, and then coated with organic paint and baked. Color steel coil is a composite material, which has both advantages of steel plate and organic material. It not only has the mechanical strength and easy forming properties of steel plates, but also has good decorative properties and corrosion resistance of organic materials. Next, Xiaoao will take you to understand the quality of color steel coils.

The color steel coil adopts cutting-edge composite technology to integrate the steel with the peritoneal membrane with bright and rich colors. Not only has the excellent quality of steel in terms of flexibility, plasticity, pressure resistance, wear resistance, heat dissipation and high temperature resistance, but also outstanding in terms of color, smoothness, and feel. It is worth mentioning that all the raw materials used in the production of color steel are non-polluting, pollution-free and environmentally friendly materials, and the production process is completely dust-free. Both production and later use have extremely high environmental protection characteristics. If the color steel coil has quality problems, we must maintain it in time. The following are some reasons for the quality problems of color steel coils.
1. Bump
Causes: 1. There is foreign matter mixed on the roller during painting. 2. The tie marks of the thin plate products when they are bundled. 3. It is subject to external impact when rewinding.
2. Edge bubbles
Cause: The raw material has burrs and a lot of paint, and there are gaps on both sides.
3. Pocky
Causes: 1. Other types of paints or paints from other companies are mixed into the paint. 2. It is caused by foreign matter in the paint. 3. Poor washing in the pretreatment process.
4. Poor bendability (T bend)
Causes: 1. The amount of pre-processing is too much. 2. The coating thickness is too thick. 3. Over-baking. 4. The manufacturer of the bottom coating is different from the manufacturer of the top coating, or the thinner is used improperly.
5. Poor hardness (pencil hardness)
Causes: 1. The furnace temperature is low and the coating is not fully cured. 2. Inappropriate heating conditions. 3. The coating thickness is thicker than specified.