What Caused the Domestic Car Paint to Have Pinholes?
Source：本站 Release time：2019-02-12 13:54:56 Click volume：
After spraying the paint from the
Auto Paints Supplier, if it is too dry, there will be various pinholes. If it is serious, it will even sag, and the depth can be the bottom. What is the reason for this?
(1) When the car paint from the
Auto Paints Manufacturer is painted, the paint film is sprayed too thick, generally three times, but if you spray it four or five times, there is a high possibility of pinholes, because the paint film is dry, solvent and air. From the bottom to the surface of the paint film, the time is too long. When they reach the surface of the paint film, the surface is already dry, so it can only be broken. At this time, the pores can't be recovered, so they stay. One small hole.
(2) There are small holes when polishing the primer. This is because when the ash is scraped, air is contained in the putty. After the primer is applied, the holes are exposed and the holes are formed.
(3) If the dissolving power of the diluent is too strong, that is, using a diluent that is too fast to dry, it is easy to break through the paint film to form small pinholes, and different types of diluents are used depending on the ambient temperature. For example, in the summer, using a quick-drying thinner, the paint film is particularly prone to problems.
(4) After the paint film is sprayed, the temperature can't rise too fast, because the surface of the paint film rises too fast, which causes the surface to dry. The thinner and air inside the paint film break through the surface of the paint film to form pinholes.
(5) It should be uniform, not too close because it is too wet, because the air will be put into the paint film together, excessive air and thinner will lead to pinholes.
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