Metal coil is a product combining metallurgy and chemical industry. Because of its changeable color, portability, easy processing, superior mechanical properties and good economic benefits in production and application, it is widely used in building materials, household appliances, transportation and metal furniture industries. Commonly used substrates include cold-rolled steel coils, galvanized steel coils, aluminum coil, etc., which are coated by high-speed roller shaft and quickly cured at high temperature to form films, thus achieving certain physical and mechanical properties. Similar to the pretreatment before coating, it is necessary to pretreat the metal coil to remove grease and other adhesions on the surface of the coil and form a stable conversion film on the clean metal surface to improve the corrosion resistance of the substrate and the bonding strength of the coating. The speed of metal tape in the production line is quite fast, and the pretreatment time is much shorter than that before general coating. Both oil removal and chemical pretreatment are required to be efficient. Wuyuan Technology's products and technologies can serve various fields of metal coil industry, such as color coated steel coil, galvanized steel coil, color coated aluminum coil, aluminum coil for food packaging, etc. Available products are degreasing agent, chromizing agent, passivating agent, chromium-free conversion agent, phosphorus-free and chromium-free silane treatment agent, etc.
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