Corrosion protection of steel storage tank containing phosphoric acidChimatech provides a technological instruction for execution of corrosion protection of steel storage tank containing phosphoric acid.
1. Preparation of the metal surface - cleaning of rust, scale and other impurities and degreasing with an organic solvent / extraction gasoline, acetone or other /
2. Application of zinc phosphate primer
Immediately after degreasing, the metal surface must be primed. Zinc phosphate primer is a two component product, the two components are mixed immediately prior to use. It is recommended to work in quantities of 2 to 5 kg, depending on the possibilities of use of the material for 45 minutes. The two components are mixed, stirred with a mechanical stirrer for at least 3 min. And is applied by brush, roller or mechanized. Operating time after mixing the components - 60 min.
3. Application of protective layers of vinyl ester enamel
After 24 to 48 hours should be applied vinylester enamel, which is also a 2K product. This material should be handled in small doses - a maximum of 2 kg. Weigh two kilograms of enamel and then add the recommended amount of the catalyst. Running time is 15 minutes. The material should be stored in a room temperature not exceeding 20 ° C.
The second coat can be applied 6 hours after applying the first layer.
After applying the last layer, the coating will harden completely for 48 hours.
It is recommended not to wet 72 hours after applying the last layer.