Because it is heavily corrosive environment, so the inorganic zinc-rich primer in the construction must be painted normal, once the defects will be on the entire coating corrosion effect has a bad effect. Here we come to understand the cause of inorganic zinc-rich primer coating defects of the four reasons and solutions.
One reason: its own quality problems Inorganic zinc-rich primer is composed of a variety of raw materials, and its performance is determined by the different components to meet the complementary state, but vulnerable to storage environment, storage time Long, improper selection of raw materials, all kinds of external factors such as the impact of different defects.
Solution: So when you choose to buy regular manufacturers, pay attention to the shelf life of the product. Storage should be in strict accordance with the requirements of the paint storage, cool and so on.
Reason two: construction technology When the inorganic zinc-rich primer and substrate factors are reasonably controlled, the defects are mostly caused by the irrational design of the coating, that is, construction technology, painting construction methods, especially dry grinding Whether the process is reasonable, the parameters are correct and so on. Solution: substrate grinding to meet the inorganic zinc-rich primer construction requirements, surface treatment clean, can not have any oil, dust, to ensure that the bottom surface.
Third, the environmental factors Steel coating coating process requires a good construction environment, if the workshop lack of lighting, will affect the accuracy of the line of sight may be discolored, spray performance is uneven; if the spray drying site humidity can not get Effective control, coupled with inadequate ventilation in the workshop, or wind speed discomfort, resulting in solvent evaporation and solvent evaporation has occurred mist and then discharge difficulties.
Solution: the construction site should have sufficient light to maintain ventilation, while the construction period should pay attention to air temperature and humidity, to avoid outdoor wind and snow weather construction, air humidity below 80%, the temperature above 5 degrees Celsius.
In the four aspects: Painting technology factors Inorganic zinc-rich primer brushing and paint the construction technology is closely related to the coating process by technical staff design and management, otherwise it is difficult to protect the normal coating process to avoid defects.
Solution: find a technical level to ensure that the construction team, strict monitoring of construction workers in the construction process, to comply with the requirements of the construction of paint.