What is a consumer galvanized coil product? The back panel of the indoor unit of the air conditioner, the back panel of the cabinet unit, internal parts, the outer shell and the interior of the outdoor unit are all made of galvanized sheet. On average, an air conditioner consumes 22 kg of galvanized coil. In addition, each washing machine consumes 8 kg of galvanized steel roll and each refrigerator consumes 3 kg of galvanized steel sheets coil.
The galvanizing solution is composed of an aqueous solution containing a metal to be plated, a conductive salt, a buffer, a pH adjuster, and an additive. The unevenness of the surface of the steel sheet caused by zinc flowers is still clearly visible after painting, which affects the surface quality of the product. And the addition of lead and antimony in the zinc solution makes the lead content in the zinc layer high, which is not conducive to environmental protection.
According to the higher requirements of the home appliance and automotive industries, corresponding requirements have been put forward on the surface quality and environmental protection of galvanized coil products. The hot-dip galvanized coil has a thick galvanized layer, which has the advantages of uniform coating, strong adhesion, and long service life. Electrogalvanized is low cost, the surface is not very smooth, and its corrosion resistance is much worse than that of hot-dip galvanized pipe.
After knowing the relevant factors that affect its life, we will know how to properly maintain the color coated sheet. Color coated steel sheet is a kind of coated products. It is made by coating a metal substrate with one or more layers of organic coating on the surface of the metal substrate after passing through the color coating unit and curing it by baking.
