Disadvantages: biting the bottomcause①The bottom layer does not match the surface layer.② Apply the lower layer paint before the bottom layer is dry.③The viscosity of the paint is too thick.④The primer layer is too thick.Solution①Pay attention to…

Disadvantages: sandpaper patterncause① The sandpaper used for grinding is coarser.②The coating is dry and not polished thoroughly.③The amount of curing agent added is not enough.④The manual grinding scar is too deep.⑤Excessive addition of thinner…

Disadvantages: sticking backcause① Insufficient curing dosage of cross-linked coating.②The surface of the coated object is contaminated.③There is too much slow-drying agent in the paint, and the solvent volatilization is not complete.④The paint vi…

Disadvantages: uneven glosscause①Improper operation and uneven overlap of spray guns.②The spray gun is blocked and the oil and gas are uneven.③The construction technology is not good, and the guns are unevenly moved.④The paint quality is not high.…

Disadvantages: crackingcause① Too much drier, the surface layer dries too fast.②The surface coating has poor weather resistance.③The primer layer is too thick, and the surface layer is applied before it is dry.④ The paint is not matched, and the h…

Disadvantages: shrinkagecause①The environment of the coating line is polluted.②There are water, oil, various acids, alkalis and other impurities on the surface of the coating.③The primer is too smooth.④The workpiece to be coated or the temperature…

Disadvantages: exposedcause①The paint is not evenly stirred and the paint is not stirred.②The coating viscosity is low and the coating is too thin.③ Missing coating occurred during operation.④ There are more resins in the paint, less pigment conte…

Disadvantages: paint offcause① The surface of the coated object is not clean and contains other harmful substances.②The putty or bottom seal is too thick and not thoroughly polished.③After sanding the lower layer, the interval between layers is too…

Disadvantages: discoloration and yellowingcause① Use paint that is easy to fade.② Discoloration after high temperature drying.③Excessive addition of curing agent.④The paint film will decompose when exposed to direct sunlight.⑤Light-colored painti…

Disadvantages: wrinklescause①The coating construction viscosity is too large, and the coating is too thick.②The spray gun has too much oil and the distance is too close.③The amount of curing agent added is too small.④The bottom surface has differe…

Disadvantages: blisteringcause① The paint itself is poor in water resistance.②The thinner is unreasonably selected and volatilizes too fast.③There is oil and water on the surface of the coated object.④ The ambient temperature is too high, the humi…

Disadvantages: grainingcause①The layering system is not good.② Irregular coating.③ There are granular items in the seasoning, so use it without filtering.④The thinner material is not matched.⑤The amount of curing agent added is too much or the mi…