The color steel coil is a kind of composite material called color coated steel plate, which is made of organic coating on the production line after continuous surface degreasing and phosphating and other chemical coating treatment, and coated with organic coating. Color steel coil is a kind of composite material, which has both steel plate and organic material. The existing steel plate has mechanical strength and easy forming performance, and organic material has good decoration and corrosion resistance.
The coating types of color steel coilcan be divided into: polyester (PE), silicon modified polyester (SMP), polyvinylidene fluoride (PVDF), high weather resistant polyester (HDP), clinker sol.
Color steel materials are divided into five categories: packaging, household appliances, building materials, optical materials and decorative materials. Among them, home appliances color steel material technology is the best, the most sophisticated, the highest production requirements.
1. with high quality substrates, the requirements for the surface, shape and size accuracy of the substrate are all higher and higher, and the hot galvanized steel rolls, such as small zinc flattened hot-dip galvanized steel rolls and no zinc flattened hot-dip galvanized steel rolls in time, are used outdoors.
2. the improvement of pretreatment technology and pretreatment liquid, low number of equipment, low cost become the mainstream technology, and continuously improve the stability, corrosion resistance and environmental protection performance of the pretreatment liquid.
3. the development of the re coating, the improvement of the general polyester, polyvinylidene 4.(PVDF) and the plastic sol, the super color reproducibility, anti ultraviolet, sulfur dioxide and corrosion resistance, and the development of the functional coatings, such as pollution resistance and heat absorption.
5 the unit equipment is more perfect. Such as the use of new welding machine, new roller coating machine, improve curing oven, configure advanced automation instruments.
Fifthly, because the cold embossing cost is lower than the hot embossing, it has the characteristics of beautiful, three-dimensional and high strength, so that the cold embossing peanut production technology has become a development trend.
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