Small cracks in car paint:
The paint surface is severely tarnished, and many small cracks appear on the topcoat layer, similar to the shape of the cracks in the soil in a dried-up pond, and the cracks often take on a triangular, star-shaped or irregular radial shape. Cracking generally occurs in the topcoat layer, and sometimes penetrates deep into the inner coat.
(1) Cause:
①The paint layer is too thick. An excessively thick topcoat will amplify the normal stress and cause cracking, and a thinner coating should be sprayed multiple times. Moreover, sufficient drying time should be allowed between the spraying operations of each topcoat, and it is not allowed to dry with a spray gun.
②The wrong additive was used. The regulations on the paint label should be carefully read and strictly followed, as various additives that are not specific to the topcoat layer will damage the final paint layer and make the paint surface more prone to cracking.
(2) Correction method:
Use grinding and polishing to remove, if not, thoroughly smooth the cracked part. In severe cases, the paint layer should be removed until the metal layer is exposed and re-sprayed.
