Why the door paint is bulging is the water stored inside the door

Hello, your situation is due to the fact that the drain at the lower edge of the door is blocked or not very smooth, and the moisture that seeps in during rain or driving stays inside the door for a long time, and after a period of time, it will start to rust from the inside out, and this phenomenon of bulging paint appears. This requires the original paint to be removed. Repaint.

After a long time, it will rust through the door.

The paint surface is bulging, and that place needs to be re-polished and painted, so it is directly polished off to see if the iron sheet inside is rusty, followed by the putty surface is not handled well, such as oil stains, hand sweat will cause the paint to be sprayed and the combination is not good, and there is a temperature problem, the local temperature is too high, the paint surface will peel, such as some engine covers with a high temperature, that place will be packed.

Hope it helps.

It may be caused by rust of the iron sheet or oil and dust in the car paint, the paint molecules are not completely attached to the metal surface, and the air expansion between the paint and the metal is caused.

Hello, usually such a situation occurs, most of which are caused by the quality of the paint itself or the painting process.

In this case, the drain at the lower edge of the door is blocked or not very smooth, and the moisture that seeps in during rain or driving accumulates inside the door for a long time, and after a period of time, it will start to rust from the inside out, and this phenomenon of paint bulging appears. This requires the original paint to be removed. Repaint.

After a long time, it will rust through the door.

Probably not, the paint bulge is most likely to be when making paint, there is a problem with the putty. Shoveling the putty and redoing it will solve the problem.

Hello! No, it is because the paint surface is blistered due to the lack of primer when painting, and the surface of sheet metal repair is not smooth enough, and the putty of the paint is relatively thick, which will also lead to blistering or paint loss over time! Start anew, paint and spray the primer on!

This means that your car may have been in an accident or scratched and repainted. However, when making the paint, the bottom layer was not properly handled. There may be other substances, dampness, etc.

The paint bulges, there may be a quality problem with the paint, or it may be in the process of repairing the paint, the primer is sprayed before it dries, and there is moisture between the topcoat and the putty, and if it is evaporated by high temperature, air will appear, resulting in the paint bulging; In addition, it may also be caused by rust caused by moisture in the metal area under the paint. If the paint bulging is not dealt with in time, not to mention the impact on the appearance, the bulging area will slowly expand, and finally lead to the paint cracking and falling, which will damage the body, repair trouble, and expensive.

In addition, the car paint bulge should be removed from the bulge paint surface, do anti-rust treatment, then fill the putty, and then wait for the putty to dry thoroughly, then polish and flatten, and finally spray the car paint. If there is a bulge in the car paint, the quality of the car paint or the operation of the paint repair, you can make a claim, it is best to go to a regular professional repair shop or 4S shop for appraisal and find a professional to deal with it.

What are the reasons for the coating on the surface of the automobile paint: 1. Cause analysis: After the dissection and analysis of the blistering parts of the top paint, the blistering layer is all coated above the DAO.

Only the topcoat film blistered, and the middle coating did not find any blistering. The main reason is that the sealing ability of the primer is relatively poor, even if there is water vapor in the primer and primer film, it can volatilize through the micropores of the paint film. The paint film of the topcoat layer is relatively closed, especially after the complete reaction of the two-component paint, if the paint film contains water vapor, it cannot volatilize, and the topcoat film is locally stressed and produces bubbling phenomenon due to the action of weather temperature and bottom water vapor expansion.

2. The seasonality of rice grain lacquer bubbles is more obvious, and most of them occur.

In July and August, it is rainy and humid, and because the air contains a lot of moisture during this season, even in the paint booth, sometimes the humidity is greater than 70. When spraying paint, sometimes the surface of the coated object is ground by water, it is difficult to volatilize the water completely, if the paint is sprayed on the surface containing water, due to the relatively small amount of water vapor, it is distributed in a fog on the surface of the object. In the process of paint covering and film formation, water vapor can volatilize away with the volatilization of solvent, after drying, the paint film is closed to the water vapor, and the water vapor left under the paint film encounters climate change, and the water vapor at the lower part of the paint film expands, and the paint film will be jacked up, and the paint bubble is formed, which generally takes 3-5 days.

3. Summary: To sum up, the main reason for the occurrence of topcoat rice-grained paint bubbles is that the surface of the coated object contains water.

If the drain on the lower edge of the door is clogged or not smooth, moisture that seeps in during rain or driving will accumulate inside the door for a long time, and after a period of time, rust will start to grow from the inside out, and it will be difficult to deal with when you find it. There are several things that car owners can do to keep their car bodies free from rust, such as keeping the doors and drain holes open as usual. Once there are small scratches and rust marks, you should first use very fine water sandpaper dipped in water to gently grind off the rust spots, wipe them off completely, and apply a layer of primer to ensure that the rust will not expand or aggravate.

You can also buy a small touch-up pen at a car supply store, and when the primer is dry, smooth it with sandpaper and then use a touch-up pen to paint it. Small bruises or inconspicuous areas can be modified in this way. You can also try toothpaste, and if you find a small new scratch, you can apply a little bit of it.

Don't forget to repaint after rain or car washing, it can be a simple insulation, but this is only a way to cope, if you have time, it is still recommended to go to the repair shop as soon as possible to repaint.

Hello! This requires the original paint to be removed. Repaint. After a long time, it will rust through the door.

Hello, if the rust wears out, weld a piece of iron sheet and redo the paint.

It's okay, just go to the beauty shop and polish it,

It is because you did not deal with the paint base well last time, and it is possible that there are water droplets in the position before the putty is hit, or there are water droplets in the rust spots. You can't avoid it yourself. If you are spraying paint, you can find an experienced master to spray paint for you, and this will not happen.

This kind of words is because of the need to do not do a good job, go to the maintenance place for repainting, I hope you can be satisfied, I wish you a happy life [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

The paint is not sprayed well, and there are many things [There is a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

The sheet metal is not knocked well or the ash is not touched well [There is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello, hello, this is ash is not dry or the ash is not good [there is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

This is due to the last time when painting, the primer was not done, and the phenomenon of separation of paint and iron sheet was caused, in this case, you can only paint the bulging place from the new [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Red and gray scratch more [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

The chemistry is [There is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

1. It is very abnormal to have muddy water on the inside of the new door, and it is generally caused by driving through muddy water or being soaked in water.

Second, check whether there is muddy water on the inside of the four doors, if there is, it should be a soaking car.

Hello, it is not ruled out that there is a possibility of soaking in water, but the new cars are also transported by large trucks, so if it rains in the process, it is also possible to be contaminated with some sediment.

The muddy water in the new car may be caused by the test drive.

Your new car may have been driven by people or there is a problem on the transportation road, this car can be wanted, ask for a new car, otherwise you can complain.