When you need to pay attention to the production of co […]
When you need to pay attention to the production of color coated steel coil, we can solve some defects well after knowing this knowledge. The bluntness eventually causes the color plate to be aged, and the defect of scratching the paint occurs during the pressing.
The primer and the passivation layer are not well bonded due to the problem of the coating resin raw material. Until both ends of the steel plate are fixed. A simple and effective method is to use a pair of jaw clamps to clamp the overlapped steel plates.
Dust will affect the surface quality of the finished color coated board, and in particular, it may cause defects in the quality of the painted paint. Sub-type color-coated boards should be placed on rubber mats, mats, brackets, etc., and the strap locks should be facing up, not directly on the ground or on the transport.
After removing the rust preventive oil, rust, dust, and the like adhering to the surface of the color coated plate, chemically coating the surface of the cleaned substrate to form a network chemical conversion film, thereby increasing the adhesion between the substrate and the coating.
Improves the corrosion resistance of the substrate and the durability of the coating. The product obtained by coating an organic coating on a hot-dip galvanized steel sheet is a hot-dip galvanized color-coated plate. Hot-dip aluminum-zinc steel sheets can also be used as color-coated substrates (55% AI-Zn and 5% AI-Zn).