Has the problem of Changan cars rusting solved?

Generally speaking, the rust of the car body is mainly due to the fact that the basic material of most parts of the automobile is steel, which is prone to oxidation reaction when in contact with the water vapor of the external natural environment, which causes rust.

Although there is no such thing as 100% rust protection for automobiles, the rust prevention period has been greatly increased under modern automotive technology. An industry insider said: "Generally, vehicles will not rust within five years, and will not rust for ten years, but there are still certain differences in each brand, which is related to body materials, paint, sealing, process control, etc."

If the surface of the body is rusted, it will affect the appearance of the vehicle, but if the chassis, engine, brake pads and other important components are rusted, it will affect the safety of the vehicle and have major traffic safety hazards. According to some data, if a vehicle is rusted for 1%, its strength will decrease by 5% or 10%.

As early as 2013, CCTV had the first issue of the quality and safety of car rust. In order to meet the design requirements of "no functional rust in the whole life cycle of the body", it is more necessary for automobile manufacturers to strengthen quality control and quality inspection, and improve the requirements for brand system capabilities. Compared with displaying the most advanced processing equipment and the best sales data, it is a long-term plan for the development of the enterprise to solve the product problems for consumers and lay a good quality foundation.

Rust often occurs on the exterior of the body, mainly due to the direct contact of the sheet metal with the outside world after rubbing. In addition to the common reasons, collisions, scratches, and long-term parking rust, there is also a situation that when driving, the small stones caused by the tires of the front car bounce off the point collision, which will cause the paint surface to peel off one by one, resulting in small rust spots. This rust is often overlooked, and it is necessary to regularly inspect the body, engine cover and surroundings of the car, and deal with it as soon as it is found.

Pay attention to daily maintenance.

In addition, places where the body is prone to water accumulation, such as the inner and outer edges of the wheel arc, the bottom of the door and the trunk, and the corners, are prone to rust over time. 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.

Therefore, keeping the doors and body drain holes clear is an important task that cannot be ignored in daily maintenance. The keyholes and glass strips around the doors and the moving parts of the wiper racks are also prone to rust, so be sure to pay attention to them at all times. 1. If the rust is not very serious, you can use very fine water sandpaper dipped in water to gently grind off the rust spots, wipe them completely, and apply a layer of primer to ensure that the rust will not expand or aggravate.

2. You can also buy a touch-up paint pen in advance, and after the primer is dry, then smooth it with water sandpaper, and then use the touch-up paint pen for coloring. Remember, the primer has the effect of preventing rust and increasing the adhesion of the topcoat, don't be lazy and apply it directly with a touch-up pen. Small bruises or inconspicuous areas can be modified in this way.

Whether it is material or structure, the second generation of ego is better than the first generation, the amount of galvanized steel plate used, is not an order of magnitude, the problem of water accumulation in local places has been solved, so the rust problem has been solved.

It shows that Chang'an and domestic car steel materials are too poor, and the control of raw materials is too bottom, such as the use of stainless steel as a chassis, such as the Japanese car for ten or eight years, bright as new, improve the quality of the beer to get the material, otherwise it is commercial treachery, bullying, seduction and other obscene culture!

My car was also rusty and the doors were rusty.

One. Be wary of small scars. In addition to common collisions and scratches, the tires bounce up small stones on the paint surface when driving, which will also make the paint surface peel off small spots, which will produce small rust spots after a long time.

Therefore, it is necessary to regularly inspect the car body, engine compartment cover and the surrounding area of the body, and once found, it is necessary to go to a professional beauty shop in time to deal with it.

Two. Check the humidity of places prone to water accumulation. While the vehicle is driving, it is inevitable to encounter rain and snow or pass by muddy and waterlogged roads, and some voids such as the bottom of the body and the floor of the car are prone to accumulate sludge.

Therefore, the inner and outer edges of the wheels, the bottom corners of the doors and trunks, the keyholes of the doors and the movable parts of the wiper rack should be checked frequently, and at the same time ensure the smooth drainage holes of the doors and body parts, and check the humidity of the covering in the car, such as carpets, to prevent rust of the floor parts.

Three. The soft lacquer surface is used as a sealing glaze. Some vehicles with soft paint may cause fine coercion marks when wind and sand particles hit the body during high-speed driving.

In this case, the body can be sealed glazed or coated, and the chassis can be armored or sealed for the bottom of the vehicle to protect the chassis from acid rain and corrosion, so that the original protective layer is not easy to dry out and fall off, and it can also prevent the impact of small stones on the chassis during driving.

Four. It's best not to cover the car jacket. If the vehicle is parked outdoors in windy and rainy weather, the inner layer of the car coat will repeatedly whip the car paint, especially if the wind and sand blow into the car coat, it will draw countless small scratches on the car body, and the paint will be black for a long time.

In addition, do not use a duster or rag to clean the sand particles on the car body directly after the wind and sand, but should rinse with clean water.

Five. The touch-up pen can be used to deal with coercion. If the rust is not very serious, you can use very fine water sandpaper dipped in water to gently grind away the rust spots, but do not grind in no direction, and polish in a straight line in the same direction.

Wait until it is completely wiped off and apply a layer of primer. If it is a new scratch, wipe it off and apply the primer directly. If the vehicle is equipped with a small can of original paint, you can wait for the primer to dry and then smooth it with sandpaper, and apply the original paint to the primer.

If there is no original paint, you can use a touch-up pen to color.

Six. Applying toothpaste can temporarily prevent rust. If you notice a new small scar, gently rub the toothpaste in a circle and apply it to the scratch.

Apply it again after rain or car wash. This generally reduces scratch marks and simply acts as an insulating barrier to prevent rust, with white paint being the most noticeable.

Not yet, I had to drive the car for half a year, and two days ago I added wipers and found that the side of the engine was already rusty. I don't know when it rusts.

I mentioned the Changan CS35 at the end of 2014, and today I found that the bottom of the door in the cab has been rusted through, and a rust bag has been bulging out, and I don't know what to do!

Returning to the question of rust, why is there already an answer? In fact, the main thing is talking about the Beijing factory, and it seems that Chen Zhen and his entourage went to the Beijing Chang'an factory for a comprehensive and detailed factory tour, so as to see the various manufacturing processes and equipment status of the entire Chang'an factory. Since the CS75 is produced in this factory, the answer to the problem of rust is actually hidden in the article introduced by these factories.

First of all, the CS75 body door panels are all self-made in the factory, there is no outsourcing, I thought there was outsourcing, naïve. In terms of the layout of Chang'an's Beijing factory, the stamping, welding and spraying factories are close to each other, and the layout is reasonable.

Then, the stamping process has a simple degreasing cleaning, and only the coordinate sampling workshop has temperature and humidity control in the entire workshop, which has been said to be very detailed. This is not a problem, because I think the main problems should be in the paint shop, and the previous process (which will prove me wrong later). **As you can see above, the painting workshop has pre-treatment of painting, washing, and phosphating electrophoresis.

Paint of four layers, regardless of the color, there is a surface varnish. Among them, the main electrophoretic primer plays an anti-embroidery role. Then, and more importantly (and most importantly), the paint shop clean area!

Think of the heavy smog in Beijing... Hey, there's a challenge. Particles attached to the body of the car are one of the triggers for the occurrence of rust spots.

Then on the most suspicious process I have seen, that is, phosphating and impregnation degreasing, electrophoresis primer and other processes, Chang'an has installed four doors and the trunk lid front engine cover and then carried out these processes, and even the subsequent painting process, but also the whole body is equipped with four doors, two covers sprayed together, the result is sprayed, and it also needs to be manually supplemented. In the follow-up, these doors will be dismantled again, but netizens reported that the rusty side will move. We can know from this matter why the color difference door appears, then the follow-up installation of parts painted separately, such as fuel tank caps, reflectors, may have the wrong color, and Changan knows that there is this risk, a place where the door spraying can prevent the color difference between the door and the body, in addition to simplifying the process and reducing costs.

After I look at the latter one should be the main factor. Well for rust.

Rust is electrophoresis not done! In order to save costs.

It's like this after a long time. The quality of domestic cars is a little worse.

In fact, car rust generally occurs has nothing to do with the brand, the car shell is mostly metal, the metal in the painting process is slightly poorly covered and will rust when it encounters water vapor, any brand car as long as the paint coverage is not complete, there will be rust, so the car rust is related to the manufacturing process, and the brand is not directly related.

The reason for easy rust is the problem of the production process, such as the anti-rust treatment process of the body steel plate and the sealing process of the body. In the past few years, some cars were rusty kings, and now the quality of domestic cars is okay.

The second is the problem of the owner, the owner of the car for some of the car paint scratch is not repaired in time, or the splashed stone hit the car paint is not dealt with in time, sometimes the beginning is just a point of paint damage, but the owner let it go, after a long time, the water vapor will have two effects.

One is to react directly with the sheet metal to produce a rust point, and then if left unchecked, it will slowly rust through or expand. Another situation is that due to the damage of the paint surface, water vapor will enter the inside of the paint through the gaps, and the whole paint will burst over time. The rust situation is from the inside to the outside, and then the car paint bulges, so the rust caused by humans is not large.

Nothing is impossible, rust does not rust completely depends on the level of the car, most of the places that are easy to rust are still on the ground, spraying anti-rust paint unevenly, or because the installation is unreasonable or the design is unreasonable, causing the parts to wear out the paint, and then the water seeps in, and slowly the edges of it are rusted, although there are very few, but it is definitely not nothing, so you must look carefully when buying a car, if you have the conditions, please find a trench to see the chassis of the car. I don't know if you have seen the site of 75, the workmanship of the suspension and torsion beam is not fine, and some welds can even be described as rough, and the possibility of rust is not ruled out.

In fact, car rust generally occurs has nothing to do with the brand, the car shell is mostly metal, the metal in the painting process is slightly poorly covered and will rust when it encounters water vapor, any brand car as long as the paint coverage is not complete, there will be rust, so the car rust is related to the manufacturing process, and the brand is not directly related.

Hello. It's like this after a long time. The quality of domestic cars is a little worse. I hope my answer is helpful to you. Have a great day! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

There is no problem, even if it is a little rusty, it does not affect the quality and service life, [If there is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

After a long time, [if you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

In fact, car rust generally occurs has nothing to do with the brand, the car shell is mostly metal, the metal in the painting process is slightly poorly covered and will rust when it encounters water vapor, any brand car as long as the paint coverage is not complete, there will be rust, so the car rust is related to the manufacturing process, and the brand is not directly related.

There is no rust, Changan Automobile is a very good brand in domestic cars, and the sales volume is also good, you can go and see it yourself, there is no saying that Changan Automobile is rusty, and the CS75 I bought by myself has not said anything rusty after two years, or don't listen to others, it's better to understand it yourself.

Mine is Changan 75plus, just bought a few months and now I have found a lot of yellow rust spots in many places, I regret it! At that time, I also considered that the quality of domestic production should be much better, and I supported domestic production a lot, but I didn't expect it to be so outrageous!

Is it true that there is no comparison with joint venture cars as all riders say?

Hello, according to the situation you said, this should belong to individual cases, and this is not a quality problem.

It may be caused by the lack of anti-corrosion measures for spray paint treatment. In addition, daily driving should also try to avoid walking in low-lying puddles, so as to avoid water vapor entering the inside of the paint through the gaps, which will also cause the whole paint to crack and rust for a long time.

At present, high-quality automotive special steel plates are widely used in trucks, and their surfaces have tensile and anti-rust coatings. Even in areas with high salt and high temperatures, it is not easy to rust. Even if they do rust, it is only near the end of their life that some cars rust due to rain erosion at the wheel position or under the doors.

In fact, ordinary vehicles will inevitably encounter rain and snow. In this case, sludge can easily accumulate in some crevices such as the bottom of the body and the floor of the car, which will worsen the corrosive environment and aggravate the rust of the steel plate. Therefore, the car should be washed frequently, clean the dirt as much as possible, and then wipe the body clean.

In addition to the common collisions and scratches, the small stones that bounce up from the tires during driving hit the paint surface, which will also cause a lot of damage to the paint surface little by little, resulting in fine rust spots, especially the joints along the edge of the door sold, which are easy to be ignored by the middle accompaniment. It can be used as chassis armor, that is, a layer of elastic sealing material with a thickness of 2 4mm is sprayed on the underside of the chassis of the car, as if a thick layer of armor was pierced. Chassis armor can effectively protect the chassis from the impact of road sand and gravel and prevent slight friction at the bottom; Prevent acid, alkali and salt from corroding the chassis iron plate.

For rusty paint, you can also buy a set of fully equipped touch-up pens to repair it yourself, which can greatly reduce the occurrence of rust.

Millions of car purchase subsidies.