Sheet metal painting is a kind of automobile repair technology, which is to repair the deformed part of automobile metal shell. For example, if the car body shell is knocked out of a pit, it can be restored to its original state by sheet metal, and then the deformed car metal surface can be restored to the same brightness as other intact places by spraying special paint.

After the automobile body is corrected by sheet metal, there are still some defects that can't be made up by sheet metal work. Even if new parts are replaced, there will be imperfections. In order to be more perfect and accurate, we must use sculpture skills to make up for the defects. After the car is damaged due to deformation and other reasons, its flatness, wheel angle and lines need to be scraped and polished.

Workflow of sheet metal repair and painting

1. Determine the scheme. Before painting the car body, it is necessary to determine the maintenance scheme according to the damage degree of the vehicle, and different solutions will be adopted according to different degrees.

2, sheet metal shaping, cutting, grinding, stretching, sealing and deoxidizing the deformed parts to keep the hardness of metal materials as much as possible.

3. Scraping and shaping. After the sheet metal is corrected, the waist line of the car body is shaped and its flatness is adjusted by scraping and shaping the car body.

4. Spray painting, the process of spray painting is complicated, and it has to go through many processes, such as first primer spraying, intermediate primer spraying, paint mixing, topcoat spraying and paint drying, which must be carried out in a dust-free environment.

5, paint surface treatment, there are small flaws on the surface of the car body, use very fine beauty sandpaper, or polish with a polishing machine to restore the luster of the car body.