1. The paint surface is oxidized. Under the ultraviolet radiation of the sun, the paint film of small concrete mixer will continuously evaporate oil into the air to protect itself, which will lead to excessive loss of paint oil for a long time. The brightness and depth of the paint surface are greatly reduced, which makes the paint surface turn white slowly, forms an oxide layer, shortens the service life of the car paint, and the phenomenon of blackening, whitening and tarnishing of the car paint can be observed by the naked eye. Serious oxidation can be treated by grinding and polishing.
2. Traffic film. Small concrete mixer produces strong static electricity layer due to friction during driving. Static electricity has strong adsorption capacity for dust, oil and chemical dust. After a long time, it will form a hard traffic film. This kind of "traffic film" is very easy to cause oxidation and corrosion on the paint surface. In this case, grinding and polishing can be used
3. Crack. If you don't take care of the paint surface at ordinary times, there may be a very slight crack in the metallic paint, which will continuously penetrate the car paint until it penetrates the whole paint layer. This phenomenon is called "cracking". Sometimes because of the quality problem of heavy painting, it will also produce cracks. If there is car wax in the crack, it will be found that the body has striated cracks. Regular waxing can gradually reduce cracking.
4. Discoloration. Fumes and pollutants in the atmosphere are the main causes of discoloration and fading of car paint. Discoloration is different from oxidation. When discoloration occurs, the paint will have uneven color difference. Moderate and mild discoloration can be treated by grinding and polishing. If it is serious, it must be repainted.
5. Erosion marks. The erosion mark is a surface erosion. Insects, bird droppings, tree sap, tar and asphalt may cause erosion marks. Slight erosion can be solved by grinding and polishing.
6. Water marks. Water marks are the marks left by the evaporation of water droplets, which are in a ring shape. Oxidation, commonly used detergent cleaning car easily stained with water marks. Slight water marks can be cured by waxing and polishing. In severe cases, grinding or painting is required.
7. Light scratches. Due to improper friction and daily care, the paint surface of small concrete mixer truck has slight scratch, but the primer is not exposed, which is obvious in the sun. It is usually removed by professional polishing method.
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