How to apply automotive primer? What color is a car primer?

Dip coating, spraying, brushing, roller coating, electrophoretic coating, scraping coating, electrostatic coating, rubbing coating.

Painting methods generally include brush coating, compressed air spraying and airless high-pressure spraying. Brushing is easy to operate and adaptable, allowing the paint to penetrate into pores and crevices. However, it is inefficient, time-consuming and labor-intensive, has a poor appearance, and is not suitable for some fast-drying coatings.

Compressed air spraying efficiency is higher, the coating thickness is uniform, and the appearance is good, but the adhesion is not as good as brushing, the paint waste is large, and it is not suitable for some high-viscosity coatings. The airless high-pressure spraying efficiency is high, and the coatings of various viscosities can be adapted, especially when used for high-build coatings, the film formation is thicker at one spray. However, it is complicated to operate, suitable for large-area spraying, and difficult to use on small workpieces or surfaces with complex shapes. Hope.

Performance requirements for automotive primers.

Since the automobile coating belongs to both high-level protective coating and medium and high-level decorative coating, the primer selected on the automobile should have the following characteristics to meet the requirements:

The primer has good adhesion to the surface of the substrate that has been pre-treated, and the coating film formed after drying must have good mechanical strength.

The primer itself must be a corrosion-resistant chemical inhibitor, and the primer coating must have excellent corrosion, water and chemical resistance.

The primer has a good match with the intermediate coating or topcoat layer, and there can be no adverse reactions.

The primer should have good workability. The primer used for manufacturing and coating should be able to adapt to assembly line operations, and the primer used for repair coating should be able to adapt to manual repair operations.

Automotive primer application steps.

Masking method before priming:

The general operation method for masking is as follows:

1) Clean the workpiece and use degreaser if necessary.

A lack of cleanliness of the workpiece will not only affect the quality of the subsequent coating, but also affect the firmness of the adhesive tape.

2) Determine the scope and location of care.

The scope of protection can be determined according to the type and area of paint to be sprayed.

3) Take the appropriate length of tape and masking paper, and paste it.

Generally, when the tape is applied to the masking paper, only half the width can be pasted, and the other half is used to paste the parts.

4) Carry out care according to the care range and care part determined in step (2).

Make sure that the areas that need to be protected in the spray area are pasted and that the paint mist does not splash into the area around the spray area.

5) Degreasing the parts that need to be sprayed.

The surface of the workpiece may be contaminated again during the care process, so it should be cleaned and degreased again after the care is completed.

1. Generally, the black car is a white primer, and the white car is a black primer, you can read the manual. Regardless of the infested primer, as long as there are deep scratches, it is recommended to repair them.

2. Automobile primer is the first coating directly applied to the surface of the parts after surface treatment, which is the beginning of the whole coating.

3. The design requires that the primer and the substrate should have good adhesion, have good matching properties with the middle coat or topcoat above, and must also have good anti-corrosion, rust resistance, oil resistance, chemical resistance and water resistance.

4. In most cases, the damage is that the scratches on the paint surface can be seen very clearly or the traces left by the friction of objects on the paint surface. Of course, you must buy a touch-up pen that matches the color of the car paint, but you don't have to worry about buying the wrong color, you only need to know what color to add to the official name of the car paint, and then buy the corresponding color touch-up pen.

Precautions for car touch-ups.

1. Do not use water other than soft water for cleaning, including hot water, alkaline water and water with high hardness. Because these substances can damage the paint. Washing with hard water, after drying, will leave marks and films on the surface of the body.

2. Don't get off the car under the scorching sun, and remember not to wash the car as soon as the engine cools down, which will cause the engine to age prematurely.

3. Do not wash the body with high-pressure water. If the water pressure is too high, it will damage the paint surface of the body. If there is hard dust and sludge on the body, soak it with water first, and then rinse it with water. Apply a dispersed stream of water to spray.

4. Don't use detergents indiscriminately. When there may be very corrosive stains on the car body, such as asphalt, oil stains, bird and insect droppings, etc., these stains are difficult to clean, you have to use stain remover, but different stains use different stains.

When the primer is the basis of the entire coating, its main role is to provide corrosion protection and adhesion to the substrate for the entire layer coating. The coating quality of the primer is crucial to the corrosion protection and service life of the coating system. The following factors should be considered when choosing a primer.

Alkyd and epoxy coatings of equipolar genes are used as primers.

The anti-corrosion primer should have good shielding properties. For coating systems with high shielding requirements, coatings containing flake pigments should be selected when designing primers, because flake pigments can cut off the capillaries in the coating and prolong the passage path of corrosive media, thereby shielding the penetration of corrosive factors such as water, oxygen and ions. Such primers include epoxy paints containing mica iron oxide, glass flakes and flake aluminum powder.

The primer should contain more pigments and fillers to increase the surface roughness.

Increase interlayer adhesion with intermediate or top coats; At the same time, the shrinkage rate of the primer is reduced, and the volume shrinkage surface caused by solvent volatilization and resin cross-linking curing reaction is reduced, so that the adhesion of the coating film is reduced.

For special substrates such as aluminum and zinc, it is difficult for ordinary primers to adhere to their surfaces for a long time, so functional primers containing corrosion inhibitors, adhesion enhancers and special resins should be selected.

For harsh corrosive environments, sacrificial anode zinc-rich primers rich in active metal powders such as zinc and aluminum are often used to strengthen the anti-corrosion function and prevent the further spread of corrosion after damage to the coating film due to external force.

A connecting primer to improve the adhesion effect should be added between the primer and the topcoat that are prone to poor adhesion to the stove, such as the epoxy primer and the antifouling paint of the ship, and an ethylene connecting paint is generally required; Zinc silicate inorganic zinc-rich paint is also sprayed with a very low viscosity spray primer before the next epoxy intermediate paint is applied to cover the porous structure of the surface of the primer.

For occasions with special requirements for the production process, a specially designed special primer should be selected. For example, the ship's pretreatment production line uses inorganic zinc phosphate workshop primer suitable for its rapid production, high-speed welding, short-term anti-corrosion and other requirements.

According to the parts used in the automobile primer on the car, the primer should have good adhesion to the substrate, have good matching properties with the middle coat or topcoat above, and must also have good anti-corrosion, rust resistance, oil resistance, chemical resistance and water resistance. Of course, the paint film formed by the automobile primer should also have qualified mechanical properties such as hardness, brilliance, flexibility and stone chip resistance.

Hello I am glad to answer for you, the general steps of automobile painting are as follows: 1. Clean the shell; 2. Phosphating treatment; 3. Electrophoresis primer (dip the light car shell into the paint tank for electrostatic positive and negative electrode coating, electromelt primer (180); 4. Coating sealing glue; 5. Send people to dust-free workshop to spray sand-free primer in the middle (165); 6. Spraying topcoat (135). The purpose of automobile coating is to make the car have excellent appearance and decoration of baggage and belt balance, color retention, corrosion resistance, and extend its service life, so it has distinctive characteristics

1) Automobile coating belongs to advanced protective coating, and the obtained coating must have excellent corrosion resistance, weather resistance, acid and alkali resistance, as well as erosion resistance to sundries, etc., and have a wide range of adaptability. (2) Automobile coating (mainly the coating of automobile body) is also a high-grade decorative coating, which must be carefully designed and equipped with a good coating environment and conditions in order to make the coating have good decoration. The decoration of the car mainly depends on the coating, which depends on the quality of the coating and directly affects the commodity value of the car.

3) Automobile coating is the most typical industrial coating, and reasonable and efficient pre-treatment methods, drying methods and process preparation must be selected. (4) Automobile coating is a multi-coat coating system, and the coating quality and process control of each single coating are particularly important.

Summary. Hello, I am your exclusive technician, attentive and attentive to solve the vehicle problems for your car, find solutions and methods for you.

There are three main coating methods for automobile paint.

1.Single-coat coating method means that the entire topcoat coating is a single-color pink automotive paint, and the single-coat coating method is generally used.

2.Double-coat coating method and base color paint layer, plus overlay varnish layer metal glitter automotive paint, are now double using double coating process coating method.

3.Three-coating process coating method and backing color layer plus base paint layer, plus light varnish layer, because the subjective color of the poor hiding power, so the general main light color system is the use of three-head layer process coating method, he is on the natural color paint to coat a candlelight base paint and then spray the cover varnish.

What are the three ways of automotive paint coating?

Hello, don't click to end, I'm textual to give you the full answer, 2-3 minutes.

Hello, I am your exclusive technician, attentive and attentive to solve the vehicle problems for your car, find solutions and methods for you The coating process of car paint is the most important three ways to 1Single coating coating method means that the entire topcoat coating is a single color of pink automotive paint, and the single coating method of burning layer is generally used2Double-coat coating method and base color paint layer, plus overlay varnish layer metal glitter automotive paint, are now double using double-coating silver virtual process coating method.

3.Three-coating process coating method and the bottom color layer plus the base paint layer, and then add the light varnish layer, because the subjective color of the hail tomato covering power is poor, so the general main light color system is the use of the three-head layer process coating method, he is on the natural color paint to coat a candlelight base paint and then spray the light varnish.

Generally, the black car is a white primer, and the white car is a black primer, you can read the manual. Regardless of the infested primer, as long as there are deep scratches, it is recommended to repair them. The scratches on the body have exposed the primer, and it is necessary to do partial touch-up treatment.

For this kind of scratch, we recommend that you go to a touch-up center that has a scratch quick repair business. They use a special repair paint, where to make up, to avoid the time-consuming and laborious spraying of large areas, the repair paint drying speed is fast, the color can be naturally connected with the original car paint, no color difference, no repair traces at all. Vehicles with shallow scratches can also be quickly treated with polishing.

Use a polishing wheel with a polishing enhancer to remove the oxide layer attached to the surface of the car, flatten the fine scratches, and at the same time the agent penetrates into the paint to reduce changes, not only the shallow scratches are removed, but the paint surface has also been renovated. Depending on the vehicle conditions, the process takes only 30 to 40 minutes.

There are several processes before making paint, scraping putty, spraying primer, you need to do it two or three times, and then spray paint, preferably varnish. I am a car repairer, and if there is a problem with the car, you can send me a private message.