Knowledge points of automobile painting

First, the basic knowledge of automobile painting:

Composition of automobile paint:

1. paint film-forming substance (resin);

2. Paint pigments (including body pigments);

3. Automotive paint solvent;

4. Automotive paint additives;

Classification of automotive paints:

1. Ordinary paint;

2. Metallic paint;

3. Pearlescent paint.

Classification of automotive coatings:

1. Ordinary paint;

2. Transparent coating;

Second, under what circumstances must the car be painted?

1. When the paint surface is seriously aged and cannot be solved by polishing and reduction processes;

2. Due to the erosion of lens effect, the paint surface is seriously lost;

3. The oxide layer on the paint surface is thick and local corrosion occurs. When it is impossible to polish and repair;

4. When the deep scratches on the paint surface cannot be removed by polishing;

5. When part or most of the paint surface is damaged;

3. What are the common problems in the process of automobile painting?

1. Open pants

2. Thin paint

A damp place

4. Droplet-shaped spots

5. The paint is wrinkled

put off

7. Powder shedding

8. boring

9. Color difference

Four. Introduction of automobile original factory painting;

1. In the automobile factory, after the welding of the body or shell is completed, the next process is painting. The first coat of paint is primer. Immerse the exposed car shell in the paint tank, fully soak the primer, and then take it out to dry.

2. After that, the primed car shell will be sent to the dust-free workshop, and the top coat will be sprayed by electrostatic painting process.

3. The third working procedure is baking, in which the car body is dried in a paint spraying room with a temperature of about 200℃.