The anticorrosive materials used in anticorrosion construction of steel structures outside Guangzhou in winter should be strictly in accordance with the proportions of the paints and auxiliary products provided on the product specification, and should not be added or increased. Otherwise, paint defects such as biting or cracking will occur. When mixing the paint, stir it evenly, filter it for 15 minutes after defoaming and brush it again. Of course there are other things like:
1. Do not add driers and other chemical auxiliaries at will because of personal opinions, etc., otherwise it will cause cracks in the paint and other paint film defects.
2. When the outdoor steel structure project is used for anti-corrosion construction, the outdoor construction temperature shall not be less than 5 degrees Celsius, and the relative humidity shall not be greater than 85%.
3. It is forbidden for each layer to be dry and not properly polished, that is, it is easy to cause biting or falling off.
4, low winter temperatures, long dry paint surface, the film surface contact with the outside air is also a relatively long time, the air dust particles easily adhere to the paint film surface, the formation of particles (air drying is more obvious). Therefore, for better paint film effect, please pay attention to the cleanliness of the environment before painting.
5. It is forbidden to apply thick coating at one time, otherwise it will cause bite at the end, whitening, cracking, pinholes, bubbles, and other defects of the paint film.
6, adjust the paint after the placement time should not be too long, the longer the time, the more luster will drop.
7, the viscosity of the paint changes with the temperature changes, when the temperature is lower, the viscosity will increase a lot, this will lead to an increase in the amount of thinner, at this time the paint's luster, fullness will be reduced. During construction, the paint film should not be over-coated at one time. Therefore, it is necessary to reduce the spray thickness and increase the number of spray passes to create a gradually dry environment from the inside to the outside.
8. When the ambient temperature is lower than 0 °C, no brushing work is allowed on snow or thin ice on components.