2. Scraping ash has also become plastic, and there are still some defects that cannot be made up after body sheet metal correction. In order to be more exquisite, sculpture is needed to make up for the defects;
3. Painting in automotive sheet metal: Painting in automotive sheet metal is usually divided into three steps. The first step is the first primer treatment: filling the sand marks and micropores at the bottom of the workpiece to increase the adhesion of the lower coating, which also has the function of defect indication; Step 2, intermediate primer treatment: prepare a well-lubricated working surface for the top coat, complete the last procedure of all primer work, increase the adhesion of the participating layers and have a certain isolation effect to ensure the quality of the top coat; Step 3, topcoat: topcoat is divided into single-layer paint and multi-layer paint, which are color fixing layer and decorative maintenance layer respectively;
4. Paint surface treatment of sheet metal and spray painting: Paint surface treatment is the last process of topcoat, and defects of paint surface will be treated after paint surface is dried;
5. Stop grinding with fine wax (without silicon) to remove traces of coarse wax, then treat with repairing agent to achieve perfect luster, and then thoroughly clean the halo and scratches with mirror treatment agent to make the vehicle more rounded and shiny.