Qingdao Highonour Chemical Tech Co.,Ltd.

Inappropriate drying methods lead to uneven drying surface. If the newly sprayed paint layer is dried or forcibly dried too fast, or the temperature of the paint workshop is too high, the surface coatings are dry and contracted, which will delay the drying speed of the inner coating. When the inner coating is dry, the surface coatings will shrink. Avoid spraying paint in the workshop or temperature changing in poor temperature.

1. There is no thorough cleaning at the bottom layer. For example, the oil or waxy substances on the bottom surface are not completely removed. Due to the effects of the mezzanine effect, the re -sprayed coatings cannot be attached.

2. The interval time of the second spray is too short, and it is not given a full drying time for the underlying coating, which causes the bottom paint or surface paint to soften the water erosion in the wet paint surface.

Amendment method: Followed areas with defective are smooth but cannot be worn, and paint is re -painted.

1. Improper use of spray guns. For example, if the pressure of the air is too low, or the spray gun is too close to the spray surface, or the speed of moving the spray gun is too slow, the possibility of flowing phenomenon will increase. The shape of the beam and the air pressure should be adjusted appropriately, so that the spray distance should be kept at 20-25cm, and the movement speed of the spray gun should be uniform. Grasp the amount of extreme spraying of streaming, and spray the painting film while observing the formation of the painting film.

2. The temperature of the spray workshop is too low, the spray paint layer is not easy to dry, or the paint layer that is sprayed at one time is too thick, resulting in the drying speed of the paint layer too slow

Amendment method:  When the flow phenomenon is slight, after the paint surface is dry, first polish the flawed areas with fine sand paper. When the flow phenomenon is serious, the painted area with defective paint is re -sprayed.

1. There is no thorough cleaning of the underlying surface before spraying, such as oil or waxy substances without thorough removal.

2. The defects of the previous paint layer were dry or the old paint layer was not removed.

Amendment method: If the mark is relatively obvious, the coating layer should be grinded and sprayed again.