How to tell if the car has hurt the car primer?

Car primer is applied directly on the surface treatment.

The first coat of paint on the surface of the parts themselves.

The primer should have good adhesion to the substrate, have good matching properties with the middle coat or topcoat above, and have good corrosion resistance, rust resistance, oil resistance, chemical resistance and water resistance.

We can judge whether the primer of the car is worn by the following methods:

1. Generally speaking, the primer and body will generally be injured in the direct scratching of the vehicle.

2. Usually in this case, the metal layer of the car body will be directly exposed to the air, coupled with the humid climate, it is easy to rust the car body.

3. How to judge whether you need to touch up the paint: If the car paint is only scratched on the outside, it generally does not need to be dealt with immediately, because there is a layer of primer protection on the outside of the car body, and such scratches are not easy to find and do not affect the appearance.

4. For many car owners who are "doting" on the car, if they find small scratches, they can't judge the depth.

5. Then you can touch it with your fingers, and generally you can't feel the scratches with obvious bumps and bumps, which means that the primer is not damaged, and you can leave it alone for the time being, or deal with it later.

6. Finally, if you can clearly feel that there is a "line" to the touch, such a scratch has already hurt the bottom paint and should be dealt with immediately.

The method of judging that the car has injured the primer is: 1. It can be observed with the naked eye, the color of the primer is opposite to the color of the car paint, and there will be obvious color difference when the car paint is scratched; 2. Scratch the fingernails and feel a slightly rough depression indicating that the lacquer is injured; 3. See if the scratches are rusty. The main function of the primer is to increase the finish of the surface of the car, so that the color coat can appear fuller and more fit after being sprayed.

The maintenance methods of automobile paint are: 1. Remove the dust on the car body in time to minimize the adsorption of dust by the static electricity of the car body; 2. Rinse the rain stains with clean water in time after the rain; 3. When wiping, wipe from top to bottom along the direction of the water flow.

If the car paint is only scratched on the outside, it generally does not need to be treated immediately, because there is a layer of primer on the outside of the car to protect, and such scratches are not easy to find and do not affect the appearance. For many car owners who "dote" on the car, if you find that a small scratch can not judge the depth, you can touch it with your fingers, and generally you can't feel the scratches with obvious bumps and bumps, which means that the primer is not hurt, and you can ignore it temporarily, or deal with it later, but if you can obviously feel that there is a "line" to the touch, such scratches have hurt the base paint, and you should deal with it immediately.

Seeing the primer, it is the so-called "open bottom", that is, the paint surface has been scratched, and the car body can be seen through the breach. If the broken parts are in the front and rear bumpers, fenders, because these places are generally black plastic parts, so the exposed color at this time is black, if the damage is in the door, hood, trunk cover, roof, sill these parts, because these parts are metal, so what you see is the silver gray of the metal, serious has scraped the metal surface to expose the metal luster.

One is the depth of the scratch, and the other is the color. Pay attention to distinguish whether something else is attached to the car. Scrape it with a fingernail, protruding, and if you can scrape it off, it will be a bake of other paint. There are grooves in the recess, and the color is different from the topcoat to expose the primer.

To judge whether the scratches of the car are damaged by the paint, you can judge it by a variety of methods, you can see whether the scratches are the color of the paint, and you can also observe whether the scratches will rust.

Generally, only in the case of a deep scratch, it is still easy to leak out of the primer, and there should be no **.

In this case, you let some old drivers who have been driving for a long time know about it.

How to tell if the car is scratched is scratched is very simple, touch the scratch with your fingers, if there is a clear concave and convex feeling, revealing white, gray and black, it is a wound to the paint.

1. At present, the color of automobile primer mainly has three colors: black, white and gray. The general use of gray primer on the car! The owner can check the scratch and be careful if one of the three colors of black, white and gray appears.

2. If it is not obvious, polishing and waxing can solve it. If the primer is exposed, it will definitely need to be touched, so it needs to be maintained immediately. Otherwise, it will rust, and the primer will generally appear, and the leakage key should be checked for damage, as long as the primer is not scraped off, it is simple to repair the paint surface.

3. The front car primer is the first coating directly applied to the surface of the parts after surface treatment, which is the beginning of the whole coating. The design requires that the primer and the substrate should have good adhesion, have good matching with the middle coat or topcoat above, and must also have good corrosion resistance, rust resistance, oil resistance, chemical resistance and water resistance.

1. The car is scratched, and it is judged whether it hurts the base paint

With the naked eye, usually white cars are black or gray primers, and dark cars are the opposite. If there is no way to distinguish it with the naked eye, then we can feel it with our hands, and if there is a clear "click" sensation on the nail cover through the scratch, it means that the scratch is deep, and the damage to the primer may be larger. If it's just a little rough on the fingers, it's not a big problem, just wax and polish.

2. The car is a small trick:

1) Any scratch may rust, and if the primer is damaged, then the possibility and speed of rust will be further increased. Here's a little trick, that is, applying toothpaste can temporarily prevent rust, remember that it is ordinary toothpaste, and gently rub the toothpaste in a circle and apply it to the scratches. Don't forget to apply it again after rain or car washing.

2) This can generally reduce scratch marks, and can also simply play an insulating role to prevent rust in the short term, especially for white paint, the effect is most obvious.