HS code-focused compliance audits

List of the catalog of this article:

• 1,HS code-focused compliance audits How to distinguish whether the paint of a car is paint or baking paint!
• 2, Full strategy for paint layer maintenance in car beauty maintenance
• 3 , How to remove the paint on the surface of the car?
• 4, Car PaintSteps
• 5, car Quick repair of car paint
• 6, How to properly maintain the car paint

How to distinguish whether the paint of a car is paint or baking paint!

1. The main differences between the two are as follows: baking paint is much smoother than spray paint in terms of flatness. Because each side of the paint needs to be baked in a dust-free spray room during the baking process, it will not be contaminated by dust. Baking paint is easy to foam and feel granular due to air dust; the baking process is relatively complicated.

2. The difference between baking paint and spray paint is: different operation methods, different material selection, different construction skills, different safety and different cost.

3. Different processes. Baking paint is to apply primer three times and topcoat four times on the substrate. Each time the paint is painted, it is sent to the dust-free temperature baking room for baking. Spray paint is to grind the tweed on the substrate, and then spray paint on it and dry it naturally. Different paint films. The corners of the baked paint are smooth and the color is the same. It proves that the paint film is uniform and the color is full.

4. The paint film is different. Baking paint: smooth edges and the color is the same. It proves that the paint film is uniform and the color is full. Spray paint: the corners are rough, and the color is lighter than the door panel. It proves that the paint film is uneven and the color is not full.

5. Whether it is spray paint or baking paint, the primer of cars is an electrophoretic primer. Spray paint is topcoat paint. Baking paint is a surface paint spray powder, which is more weatherproof than spray paint, but the price will be more expensive.

6. The difference between baking paint and spray paint Process. Baking paint: apply primer three times and topcoat four times on the substrate. Each time you apply paint, it will be sent to the dust-free temperature baking room for baking. Spray paint: Grind the tweed on the substrate, and then spray paint on it and dry it naturally. Paint film. Method: Touch the four edges of the painted door panel with your hand to see if it is smooth.

Full strategy for the maintenance of the paint layer in the car beauty maintenance

1. Try to park the car in the garage, and do not be exposed to strong sunlight when parking to reduce rain. Don't park randomly when you go out for parking. If you get in the way, you will be attracted to draw paint.

2. However, because every paint surface maintenance needs to be polished, the paint surface maintenance should not be too frequent. The maintenance reference standard is that if it is found that water droplets can no longer roll smoothly on the clean paint surface, the car paint maintenance should be carried out. (1) Waxing Waxing is the most traditional automotive paint beauty and maintenance technology. Its products can be divided into solid wax, liquid wax and wax wax according to the condition.

3. Car paint is like human skin, and acid rain, oxides and ultraviolet rays will erode the "skin" of cars like bacteria and mites.Nowadays, although the importance of car paint care has been paid attention to, even repairmen may not be clear about the relevant knowledge.

4. Therefore, special attention should be paid to the maintenance of car paint in summer. In the daily use of the car, it is found that after the car is exposed to the sun, the surface paint of the car will age, fade, yellowing, etc. Therefore, under normal circumstances, the car paint will be maintained by going to the 4S store for maintenance, beautifying the car, etc.

5. After completely wiping, apply a layer of primer. If it is a new scratch, you can wipe it clean and apply primer directly. After that, if the vehicle is equipped with a small tank of original paint, you can wait for the primer to dry, then grind it with sandpaper and apply the original paint on top of the primer.

How to remove the paint on the surface of the car?

1. To remove the paint on the car, you need to prepare the following tools and materials: asphalt cleaner and towels. The specific removal steps are as follows: first, take out the asphalt cleaner for use. The asphalt cleaner is an organic solvent and can remove the paint on the car.

2. How to remove the paint spots on the surface of the car? The following is the specific method of removing the paint spots on the surface of the car: paint remover: spray the paint remover and leave it for five minutes, so that the paint remover fully reacts with the paint on the car, and wipe the paint spots on the car with a rag.

3. It is recommended to start with a solvent with weaker solubility. First, ethanol, that is, alcohol. The car paint is baked paint, which is resistant to ethanol and has no pressure. And other parts of the car, such as window seals, door plastic, etc., can also withstand ethanol.

4. If the area of paint floating on the car is not obvious, it can be treated with a product that combines waxing and polishing. If the paint cannot be removed by polishing, it can be tentatively wiped with nitro thinner. The whole wiping process should be fast, because the nitro diluent is harmful to the paint.

5. Then, you can stop the operation until the flying paint is completely removed. Flying paint that has been completely dried. However, for completely dried flying paint, it is not as easy to handle as mentioned above. First, remove the sand and dirt from the surface of the car paint, and then sand off the flying paint with No. 2000 polishing sandpaper. Of course, when polishing, the force should be controlled as much as possible.

Steps for car painting

The basic steps of car painting are as follows: cleaning, identification, evaluation and shielding. After cleaning the whole car, identify the type of old coating, evaluate the degree of damage to the workpiece, and determine the maintenance process. Masking and deoiling Protect the area around the damaged part with masking paper, and de-oil the area that needs to be polished at the same time.

General process of automotive paint spraying: dust removal and cleaning: first blow out the dust spots on the car body with a pressure gun, remove the body stains with a silicon remover, blow out the dust from the gaps in the body with a pressure gun, and finally remove the fine dust on the car body with a sticky dust cloth.

Specific process: (1) Anti-rust and internal spraying of the car body: It will be completed by the sheet metal worker according to the condition of the car body. ( 2) Sanding and retouching bevelves: use P60~180# sandpaper to polish the car body that has been repaired by sheet metal and where atomic ash is needed.(3) Dust removal and cleaning: Use pressure guns and silicon remover cleaners to remove fine dust and stains on the car body.

Automotive paint quick repair

1. Spraying method: This is a more traditional way to repair paint scratches, which is simple to re-spray directly on the original paint surface. The biggest disadvantage of this scratch repair method is that it will cover the original paint. If the scratch area is large, the repair time will be long, and the repair effect may not be very good.

2. If it's just a small scratch and doesn't hurt the primer, just throw it and polish it. If the primer falls off, you can use a touch-up pen to make up for it. If it is very serious, it is recommended to go to the 4S store.

3. Due to the spraying method,It is necessary to have a certain degree of professionalism. It is difficult for ordinary people to have that level, so try to choose a professional car painting center to carry out. If the operation is improper, it is difficult to ensure that the scratches after spraying are consistent with other places. Repainting is not a trivial matter. You must go to a specialized repair shop or a specialized repair shop.

How to properly maintain the car paint

To put it simply, coating is to cover the car body with a layer of transparent "protective clothing", which can effectively protect against erosion such as ultraviolet rays and wind and sand, isolate the car paint from the air, and make it oxidized process. The degree becomes slower, which is much longer than the validity period of waxing and sealing glaze, so many people also choose coating in order to save worry.

Car paint maintenance knowledge How to maintain the paint layer PaintThe layer is different from metal. The hardness is very low and easy to be damaged. It can be cleaned with a soft cotton cloth or wool brush, so as not to damage the paint surface. After the collision of the car body, the steel plate of the body is wrinkled, and the paint layer is easy to be destroyed and exposed, which is easy to rust and must be repaired and painted immediately.

It is recommended to go to a professional car beauty shop to remove the oxide layer and iron powder before construction. Daily maintenance of car owners. We try to park indoors when parking, and don't often be exposed to the sun, wind and rain outdoors. If there is bird droppings, gum, etc. on the paint, dispose of it immediately. Do not dry it when wiping the car, and gently wipe the paint with a wet towel.

However, if the primer has been exposed or the scratches are obvious, it is better to find a professional car paint scratch repair expert to avoid the color difference after repainting.

For this kind of car, the body can be glazed, which can form a mesh-like solid protective film to improve the hardness of the paint, and the effect can be maintained for about a year. And coating can also achieve a similar effect.