Common quality problems of color steel plates
Color steel plates may have a variety of quality problems during production and use, which not only affect their appearance, but also their performance and service life. The following are some common quality problems of color steel plates and their causes: Coating problems 1. Coating (1) Uneven coating problem. During production, the coating thickness on the surface of the color steel plate will be inconsistent, and some areas will be too thick or too thin. This is usually caused by a malfunction of the coating equipment, improper control of the paint flow, or unstable movement speed of the spray gun. (2) Poor coating adhesion problem. The coating is easy to peel off and peel, and the bonding with the substrate is not strong enough. The root cause is that the surface pretreatment of the substrate is not thorough, there are oil stains or impurities, or the coating formula design is unreasonable. (3) Missing coating is also common in production. Local areas on the surface of the color s...