1.Steel coil brief introduction
Color steel coil is a kind of composite material, also called color coated steel sheet. It is a product made by continuously applying chemically transfer coating such as surface degreasing and phosphatizing on the production line and coating it with organic coating.
Color steel coil is a kind of composite material, which has both steel plate and organic material. Both the mechanical strength and ease of molding of the steel plate, but also a good organic decorative materials, corrosion resistance.
The coating types of colored steel coils can be divided into: polyester (PE), silicon modified polyester (SMP), polyvinylidene fluoride (PVDF), high weathering polyester (HDP), clinker sol.
Color steel materials are divided into five categories: packaging, home appliances, building materials, optical materials and decorative materials. Among them, the best and finest craftsmanship for color steel materials for home appliances are the most demanding.
4.Product development trend:
1.The use of high-quality substrates, the surface of the substrate, shape and dimensional accuracy requirements are increasing, outdoor use such as small zinc flat hot galvanized steel coil, non-zinc flower flat galvanized steel coil timely The rise of zinc alloy hot-rolled coil; indoor use such as electro-galvanized steel coil, film cold-rolled sheet and aluminum coil.
2.Improve the pretreatment process and pretreatment fluid, the number of equipment is small, the cost is low to become the mainstream process, and the stability, corrosion resistance, and environmental performance of the pretreatment fluid are continuously improved.
3.Pay attention to the development of new coatings, improve the general polyester, polyvinylidene fluoride (PVDF) and plastisol to obtain super color reproducibility, UV resistance, anti-sulfur dioxide, improve corrosion resistance; develop resistance to pollution, absorption Hot and other functional coatings.
4.The unit equipment is more complete. Such as the use of new welding machine, a new roller coating machine, improve the curing oven, equipped with advanced automated instruments.
5.Because the cost of cold embossing is lower than that of hot embossing, and it has the characteristics of beauty, three-dimensionality, and high strength, cold embossing production technology has become a development trend.