Why car chassis is prone to rust

As a device composed of many precision parts, the car needs to rely on good drainage facilities to ensure the sealing of the interior of the cabin and avoid water leakage on rainy days. Why is it that some cars are fine for more than ten years, and some cars are only a few years old, and the chassis of the body is rusty? I believe that many friends have not figured out the reason.

In fact, this is mainly caused by the blockage of the drainage hole, resulting in poor drainage, and in severe cases, it can also lead to damage to the vehicle's machinery and circuitry. Therefore, as the temperature gradually rises, the rainy weather will also "follow", please check the drain of your car in time, the drainage holes are generally distributed in the following places, sunroof, engine compartment, under the door panel, under the trunk spare tire, fuel tank cap, which is the easiest place to block in the sunroof and engine compartment, because these two places are most likely to be ignored.

There is also a drainage hole under the fuel tank cover plate under the fuel tank cover, because the sealing of the fuel tank is not as tight as imagined, and in the process of inserting the oil gun and pulling out the oil gun, it is inevitable that there will be oil spilled to the outside, so it can also become an "oil drain hole". In addition, the drainage holes here prevent water accumulation and prevent the fuel tank cap from opening due to freezing in winter.

Under-door drain holesDoor drain holes are located at the bottom of the door and are usually covered by the door seal, so they can be found by touching the hand while not visible to the eye. When rainwater enters the inside of the door through the gap in the window, it will flow out of the door drain hole. However, if debris such as business cards and leaves fall into the cracks of the windows, the drain holes may be blocked, and too much water will accumulate and damage the window lift motor.

The trunk drain hole is located under the spare tire storage area of the car, due to the low position, it is easy to seep into the interior of the car during the car wading, and most manufacturers will block it with soft plastic, and then poke it open when the water is released.

If the sunroof drainage hole is not used to opening the sunroof for a long time, the drainage hole is not likely to be blocked, but there is one place that needs to be paid attention to is due to water seepage in the rubber gap, which causes the interior panel to be damp.

The location of the engine drain hole is the junction between the lower edge of the windshield and the rear of the engine compartment, which is easily covered by a large amount of leaves or sludge, and it is relatively easy to find, so it is good to clean it in time. In short, in fact, it is not difficult to maintain the drainage holes, as long as we usually clean the debris and dust when we usually wash the car. Remember not to wash the car directly with water at the drain hole, and try to put it in a cool place to prevent the aging of rubber parts in direct sunlight and the gap from becoming larger.

Most of the drains are not exposed much, and are even concentrated in the front and rear bumpers. If it is blocked in the middle of the pipe, go directly to the 4S shop or auto repair shop, after all, it is still a technical job to disassemble the A-pillar trim and lap the drain pipe, and it is more difficult to operate it yourself.

The chassis is most susceptible to rust when exposed to air, or sticky to water and sediment. Automobile chassis is often exposed to the air is quite prone to redox reaction, if there is no contact with the air, the chassis of the car will not necessarily rust, some car owners in order to protect the chassis of the car, the chassis armor is installed on the chassis of the car, the chassis armor is a kind of protection device, the key is to protect the chassis of the car from damage. Additional Information:

1. When the car is driven during the trip, driving in the road condition is quite poor, it is inevitable that a part of the sediment will be attached to the car site, and the sediment will accumulate on the chassis of the car little by little, and through contact with the metal chassis, it will slowly corrode the chassis of the car, and eventually affect the rust of the chassis. 2. In order to prevent this situation from happening, it is necessary to install chassis armor, but the requirements for armor treatment are too high, and improper treatment will be ***, so it is necessary to choose a professional repair shop to operate as much as possible. The general chassis of a car is protected by a coating, but in many cases there may be some wear and tear.

This is unavoidable. Any car metal that is exposed to air can oxidize, rust, and rust. Now you can buy anti-rust fluid in ordinary car maintenance places, and after washing the car, the correct use of different types of metal protective fluid will prevent the oxidation and rust of the metal to a large extent.

The reason why the automobile chassis is easy to corrode is because the automobile chassis is relatively similar to the tires, so it is easy to be polluted by sewage or air on the road surface during the process of driving, so the situation of rust occurs.

Therefore, the correct maintenance method of the car, it is best to learn more with professional technicians, so that it will be mastered better, and others must pay attention to polite language, the types of polite language and precautions are as follows.

Speak of his type. Today is a good day" is also a common question in daily life that can break the awkward situation. This is a good way to greet you when you meet for the first time.

Touching the scene is emotional.

A situational greeting is a temporary greeting based on a specific conversation scenario, such as what they have just done, what they are doing, and what they are going to do.

Compliment. The simplest is praise; As a member of society, we need affirmation and recognition from others, and we need sincerity and praise.

Climbing type. At the first meeting, the exchange of greetings and the recognition of a certain relationship, at first sight, immediately translates into an opportunity to make a connection and develop a friendship. In the process of communication, it is very important to be good at finding opportunities, digging out the common ground between both parties, and getting closer to each other emotionally.

Appreciative type. It is a sign of respect, admiration, warmth and politeness to the person meeting for the first time, and the use of greetings or polite words should be selected and adjusted according to the environment, conditions, object and feelings of both parties.

Precautions. 1.Be sincere and speak appropriately: Use polite language appropriately, naturally, and sincerely, to create a harmonious atmosphere for each other's conversations, and to avoid foul language and excessive praise.

2.Audience: Different people should use different greetings. Men and women are different in social situations, and their familiarity with each other is also different, and the tone, language, and topic of the greeting should also be different.

3.Occasion: Use different greetings in different places, and be more cautious in solemn occasions.

There are many reasons why a car chassis can rust.

The main causes of rust in the chassis of a car are as follows:

1. Application of automotive materials.

It is impossible to use good sheet metal materials due to the restriction of the car due to the brand positioning, which is the result of rusting is hardware, there is no doubt that the higher the car will generally use higher cost materials, such as hot-dip galvanized steel, all-aluminum materials, high-strength composite materials, automotive carbon fiber, etc., these automotive materials are naturally difficult to rust, who has ever seen the all-aluminum body, chassis will rust? At the same time, whether the automobile manufacturer cuts corners, will also make the performance of the automobile material larger, we know that the automotive steel plate can have many kinds of anti-rust treatment, such as galvanizing, chrome plating, etc., the automobile manufacturer saves these processes in order to save costs, which is why the exhaust pipe of some cars is rotten in a few years; In addition, there are some process gaps, such as the difference in coating process, welding process, etc., which will also make the degree of rust appear "congenital" difference.

2. Human factors.

This is mostly caused by the improper use or "laziness" of our car owners, such as the damage of the car paint is not repaired for a long time, resulting in the rust on the surface of the inner plate of the car paint exposed to the air; Driving often walks to waterlogged places, so that the chassis is in contact with water for a long time, resulting in chassis corrosion; If you don't wash your car for a long time, especially after rain, the rain will corrode the car body if you don't clean it; Always place your car in a humid place, such as the seaside, riverside, etc. The so-called "lazy" mainly refers to seldom taking care of the car and rarely maintaining the appearance of the car, such as car washing, waxing, etc.; The tail of the exhaust pipe often accumulates water and is not cleaned.

3. External factors. The external factors are mainly related to the use environment, and the environment in some places is poor, and there are more exposure to acid rain and corrosive dust; In some places, the weather is humid and rainy, resulting in serious corrosion of the chassis; In some places, the road conditions are poor, and the chassis is often knocked into the chassis or sand and gravel hits the chassis, causing surface damage and increasing the possibility of easy corrosion, such as the engine underguard, exhaust pipe, etc.

The chassis is most susceptible to rust when exposed to air, or when water and sediment sticks to it. Automobile chassis is often exposed to the air is quite prone to redox reaction, if there is no contact with the air, the chassis of the car will not necessarily rust, some car owners in order to protect the chassis of the car, the chassis armor is installed on the chassis of the car, the chassis armor is a kind of protection device, the key is to protect the chassis of the car from damage.

Due to the long-term exposure to a very harsh working environment, the automobile chassis is also the most harmed and eroded. Driving in rainy weather, the chassis is in direct contact with the rain; driving in snow; The chassis is in direct contact with the icy snow; The mountain roads were rugged, and the chassis had to endure the harsh environment such as gravel.

The road surface of the car is complex, and the ground is difficult to clean, if the anti-rust is not done in the new car or is not done, then it will definitely rust with the increase of time in the process of vehicle use, but there will generally be no problem in the normal service life.

This is relatively normal.

If you wade in water a lot, or if you have touched seawater, it is easy to rust. In addition, if the manufacturer does not do a solid job of painting or anti-corrosion of these parts, it is easy to rust.

Every car will have the problem of rust, usually less waterway and less contact with water, you can go to sandpaper and then spray paint.

To prevent rust on the chassis of the car, it is necessary to remove the oil sludge and sand bonded on the chassis, or use special sandpaper to polish off the original anti-rust layer, blow out the water in the gap with a water blow gun, and wipe the water dry with a towel.

When preparing to spray the anti-rust treatment layer, you must first cover the tires and exhaust pipes with masking paper (mostly newspapers) and tape, especially pay attention to the sensors and shock absorbers on the body to cover well, and spray the chassis anti-rust materials to the chassis in turn, spraying at least 3 layers, with a thickness of about 3 mm.

When applying care, it is important to maintain an even spray coating to create a uniform anti-rust coating that will last for a long time. After all the work is completed, it will be dried for 5-10 minutes to prevent rust from rust on the chassis.

When the chassis is prone to rust, the chassis is exposed to air bodies, or is stuck by water and sediment, and is most prone to rust. Car chassis are often exposed to air and are more likely to cause redox reactions. If it does not come into contact with an air body, the chassis of the car will not rust.

In order to protect the chassis of the car, some car owners have installed chassis armor on the bottom of the car. Chassis armor is a protective device. Car chassis are often exposed to air and are more susceptible to redox reactions.

If it does not come into contact with an air body, the chassis of the car will not rust. In order to protect the chassis of the car, some car owners have added chassis armor to the chassis of the car. Chassis armor is a type of protective device that is mainly used to protect the chassis of a car from damage.

In fact, although this behavior protects the chassis of the car, it may accelerate the rust of the chassis. Chassis armor can only prevent rust on the site if it is built on a very high level of cleanliness, that is, the surface of the chassis must be clean enough, otherwise the moisture hidden inside the chassis will accelerate the rate of rust. When the car is driving on a road with poor road conditions, it is inevitable that some sediment will adhere to the car site, and the sediment will accumulate on the chassis of the car little by little.

By coming into contact with the metal chassis, it will slowly corrode the chassis of the car, eventually causing the chassis to rust. To avoid this, it is necessary to install chassis armor, but the requirements for the handling of armor are too high, and there will be *** if it is not handled properly, so try to choose a professional repair shop to operate. Millions of car purchase subsidies.

Chassis are most susceptible to rust when exposed to air, or sticky to water and sediment.

Car chassis are often exposed to air and are very susceptible to redox reactions. If it is not in contact with air, the car chassis may not rust. Some car owners will install chassis armor on the chassis of their car in order to protect the chassis of their car.

Chassis armor is a safeguard device, and the key is to protect the chassis of the car from damage.

In my opinion, this behavior, while protecting the chassis of the car, may accelerate the rusting of the chassis. Chassis armor can only be built on the basis of a very high level of cleanliness, that is, the surface treatment of the chassis must be clean enough, otherwise the moisture hidden inside the chassis will speed up the rate of rust.

In the process of driving, when driving on a road with poor road conditions, it is inevitable that there will be some sediments attached to the site of the car, which will accumulate on the chassis of the car little by little, and slowly corrode the chassis of the car through contact with the metal chassis, and eventually affect the rust of the chassis.

To prevent this from happening, chassis armor was required. However, the armor handling requirements are too high, and improper handling will produce ***. Naturally, try to choose a professional repair shop to operate.

So, after reading Bian Xiao's introduction, do you have a deeper understanding of the problem that the chassis is easy to rust? I hope Bian Xiao's introduction today can help everyone. If you find it helpful, please recommend it to more people.