Analyzing the significance of colored steel coils based on their use
Summary: It is well known that the characteristics of color coated steel plates cause oxide scales, rust layers, and other contam...
It is well known that the characteristics of color coated steel plates cause oxide scales, rust layers, and other contaminants to form on the surface of steel plates during use. In addition, it should be stored in a dry and ventilated indoor environment, avoiding outdoor storage and storage in places prone to condensation and large temperature changes.
The storage location of coating plates should be reasonably arranged to facilitate access and minimize unnecessary movement. Improving pre-treatment processes and fluids, with fewer equipment and low cost, has become a mainstream process, continuously improving the stability, corrosion resistance, and environmental performance of pre-treatment fluids. Coatings for steel coils are generally divided into two categories based on their use: for construction and household appliances. Architectural coatings are selected from epoxy resin, polyester resin, polyvinyl chloride plastic sol, silicon modified polyester, and polyvinylidene fluoride depending on the environment in which they are used. Selection of front coating performance and back coating performance. Usage, corrosiveness of the environment, service life, durability, processing method, and degree of deformation are important factors to consider when selecting materials.
In actual production, the mechanical properties of the substrate are often used to replace the mechanical properties of the coated plate, and the coating process may lead to changes in the mechanical properties of the substrate. From the perspective of the types of plates commonly used in China and the normal use environment, it is necessary to select steel plates with good fire resistance, such as rock wool steel plates, which are almost non combustible.
The plating layer is a pure zinc plating layer without lead and zinc flakes, and the alloying zinc plate is subject to leveling treatment. The surface can meet the quality requirements for the exterior and interior panels of automobiles. The scope of supply for Phase III hot galvanizing is: thickness (0.3-0.2), width (800-1830), length (plate 1000-6000, coil inner diameter 641), unit: mm. The zinc coating is passivated
It can reduce the formation of folding rust (white rust) under humid temperature storage and transportation conditions. However, the anti-corrosion performance of this chemical treatment is limited, and it hinders the adhesion of most coatings. This treatment is generally not used on zinc iron alloy coatings. In addition to finishing the surface, as a routine, the manufacturer conducts passivation treatment on other types of zinc coating.