Process flow of automobile paint
The standard process of automobile paint includes inspecting the line, flat (ARC) surface, gap, grinding and modifying the beveled edge of sheet metal repair parts, dedusting, cleaning, sticking, painting the primer, filling the atomic ash, polishing the atomic ash, ultra-young atomic ash, thoroughly polishing the old paint to be sprayed with intermediate paint on the body with P280 sandpaper, cleaning the dust and stains on the body with pressure gun and desilication cleaner, and sticking Masking paper, spraying intermediate paint, polishing intermediate paint, inspection: check the polishing effect, and perform the following steps: Micro filling, removing the dust and stains on the body, sticking and protecting the body, blowing out the dust spots on the body, removing the stains on the body, blowing out the dust on the body gap, sticking out the dust on the body, spraying plain paint on the top coat, spraying primer, varnish, drying, waxing and polishing.
Process flow of automobile paint
1. Check the flatness of sheet metal repair
First of all, check whether the part to be painted is flat, wipe the part without sheet metal, and check whether there is depression.
2. The part to be supplemented by grinding
The edge of the sheet metal shall be treated with a grinder, the feather edge around the sheet metal shall be grinded with sandpaper, and the old paint surface shall be grinded with sandpaper to expand the scope of soil filling.
3. Cleaning and oiling
After grinding, clean the grinding position and painting position.
4. Intermediate coating
Try to control the primer to be applied in a small range, and pay attention to the edge position to be gradual, not step like.
5. Grinding and intermediate coating
After the primer is dried and solidified, polish the primer with sandpaper and prepare for soil filling.
6. Soil filling
The automobile surface with low concave shall be filled with atomic ash and polished dry.
Select different grinding methods according to different surface shapes, and then smoothly transfer the edge of atomic ash and the old paint of the original car to the assembly line requirements of the original car.
8. Spraying primer or scraping and filling eye ash
Spray primer or scrape and fill the hole ash at the filling place and level some holes and damaged parts of the atomic ash.
9. Primer grinding
Polish the primer or eye putty. After leveling, use sandpaper to expand the grinding range and enhance the adhesion of the new paint surface on the old paint film. After polishing, the preparation before painting can be started.
10. Water blowing shelter
For all edge joints within the scope to be painted, use compressed air to dry the water in the edge joint, and cover the parts not to be painted.
Process requirements for automobile paint
Before our country each automobile maintenance unit to the body surface paint repair coating mostly uses the single vehicle manual work. In order to ensure the quality of the paint on the body surface, the paint room equipment is generally used. Paint spraying and baking room is produced by many manufacturers, which can be divided into three types: large, medium and small. Large size can be applied to group bus, medium size can be applied to coach, small size can be applied to car. When there is no small equipment, large and medium size can also be used instead. There are two heating modes of paint spraying and baking room: electric heating mode and diesel heating mode. Generally, electric heating mode is more convenient, and the price is higher To increase capacity. Some of the diesel heating methods are imported combustion engines, which have high thermal efficiency and should be used safely. No matter which type, it is necessary to preheat the paint room before use. If several vehicles can be operated continuously, the cost can be saved.
The paint spraying and baking room has requirements for air purification rate, so air filter materials should be used, and high-efficiency non-woven filter cloth should be generally selected. If it is used for a long time and the pollution is serious, it should be replaced with new ones.
There are also requirements for lighting and baking equipment in the room of paint spraying and baking room. It is required that the light is bright and soft, the service life is long, the body surface can be seen clearly, the paint quality can be ensured, the baking equipment temperature is constant and the baking is even. In paint spraying and baking room, the electric control system is mostly used for program control, so that the painting and baking process can be controlled, and the equipment can be used conveniently and stably Only when it is reliable, can the paint repair and coating of automobile achieve satisfactory effect.