What is the reason for the fast wear of brake pads, and what causes the fast wear of brake pads?

1. The material and structure of inferior brake discs are easy to cause early wear of brake pads. 2. Due to the long-term use of the brake caliper of the braking system, the brake does not return, which makes the long-term drag and wear of the disc and disc cause abnormal and serious wear. 3. The materials used in the brake pads do not meet the requirements and the design density of the friction layer of the brake pads is unreasonable (too small), which is also one of the reasons for the serious wear of the brake pads.

In the braking system of automobiles, brake pads are very key components, and the quality of braking effect is reflected through brake pads. Generally, the moving plug of the hydraulic transmission in the brake caliper is used to push the brake pad and the brake disc to contact and rub, so as to achieve the effect of deceleration and braking. Braking is a process that converts mechanical energy into thermal energy.

If the temperature characteristics of the friction material are not good enough, when we brake frequently, the temperature of the brake will rise sharply, which will change the friction coefficient of the brake pads, and the wear will be accelerated and aggravated.

The design area of the brake pad is small, and it is used in long-term speeding, frequent braking, overload work and long-term high temperature, which is also the main reason for the serious wear of the brake pad.

Photo by Brother Choosing a Car) @2019

You can check this first, if it needs to be replaced, there is no way, because the brake material is different, and the speed of wear is also different.

Normally, the brake pads of both front and rear wheels of a car should wear out at the same rate. But the front wheels of most cars wear out faster than the rear wheels, and the front and rear brake pads are replaced about twice before they are replaced, which is caused by the center of gravity shifting forward when braking. When checking brake pad wear, it is sometimes found that one side is worn to the limit and the other side is thick.

What's going on? Most of the reason is caused by poor return of the brake driven cylinder. When not braking, the gap between the brake pads and the brake disc is small, and they are close together, so the response is fast when braking.

When braking, the piston of the brake driven cylinder moves outward, exerts force on the brake pads, and the two brake pads clamp the brake disc, and the brake disc and the brake disc rub against each other to generate braking force. When the brake is released, due to the lack of braking force, the piston of the brake driven cylinder moves backwards, and the brake pads quickly return to their initial state. However, if the piston on one side of the brake driven cylinder fails to return, even if the brake is released, the piston still does not return or returns slowly, and the brake pads will wear out additionally, and the brake pads on this side will wear out faster.

I've come across a couple of cars with driven cylinder pistons stuck and one wheel always tapping on the brakes lightly. In addition to piston jamming, poor lubrication of the driven cylinder guide pins can also lead to poor oil return.

Moving from the pump to the left and right requires a chute. The slide is the guide pin, which moves on the guide pin. If the rubber sleeve of the guide pin breaks, a large amount of dust and dirt will enter, and the frictional resistance will increase greatly.

Or the guide pin is bent due to improper operation of replacing the brake pads. In both cases, the speed of movement of the auxiliary cylinder will be hindered and the brake pads will wear out quickly. These are the two most common reasons.

The speed difference here is a very different situation, for example, one side is worn out, and the other side is half or a third. If the difference is not normal, the degree of wear of the brake pads on both sides of all cars will not be exactly the same, but there will be differences.

Because the brake pads are subjected to different forces when braking in different road conditions, such as braking when turning, the center of gravity of the car will be offset to a certain side, and the braking force of the two wheels will be different, so the wear of the brake pads cannot be exactly the same, but it is roughly the same. Can you feel the bad correction of the brake driven cylinder when driving? When braking, you can feel that the brake will run away, because the difference between the left and right braking forces will be relatively large.

If you are completely stuck in the braking state, you can feel it when you start to accelerate, and you will feel that the car is very heavy, like pulling the handbrake. Some people will hear a squeaky rubbing sound, and the hub on this side will be very hot. In short, the car will obviously feel abnormal when driving, so it is necessary to check it in time.

It is still very dangerous to run off the brakes, and the driver cannot control the direction at all, especially when the speed is fast.

It is likely that it is due to frequent braking and more frequent use, so the speed of wear and tear is also very fast.

It may be because the brakes are pressed too hard, so we should pay attention to early braking in daily life, do not brake urgently, and protect the brake pads in daily life, and do a good job in the maintenance and repair of the brake pads.

It is very likely that the material of the brake pads is not good, and secondly, it is also possible that the brake pads are often braked hard when driving, so that the brake pads wear out too quickly, or it is also possible that the brake system has been used for a long time, resulting in the brake pads wearing out too quickly.

Hello, the material, and how often you apply the brakes.

Brake pads are consumables, which will gradually wear out in use, and must be replaced when worn to the limit position, otherwise the effect of braking will be reduced, and even cause safety accidents.

In general, the front brake shoes wear out relatively quickly, and the rear brake shoes are used for a relatively long time. In daily maintenance, it should be noted that under normal driving conditions, check the brake pads every 5000 kilometers, not only to check the remaining thickness, but also to check the state of shoe wear, whether the degree of wear on both sides is the same, whether the return position is free, etc., and the abnormal situation must be dealt with immediately, and the brakes must not wait for the friction material to be worn out before replacement.

Uneven wear inside and outside The microscopic angle is like this, the brake pad and the disc are grinded at the same time, and the brake pad material is softer than the disc. No matter how uneven, the brake pads will always fit snugly against the disc.

If you are an old plate and a new film, the plate should be "sharpened", and then it will be good to run in about 50km.

If it's just a theoretical unevenness, and now the brakes don't sound or shake, then it's not a problem.

Some vehicles have a brake pad alarm function, once the wear limit is reached, the instrument will alarm and prompt replacement.

In addition, some consumers like to replace brake pads at any repair shop. In fact, when replacing, the brake pads provided by the original spare parts should be replaced, so that the braking effect between the brake pads and the brake disc is the best and the wear is minimal. When replacing the brake shoes, the brake cylinder must be pushed back with a special tool.

It cannot be hard pressed back with other crowbars, which can easily cause the brake caliper guide screw to bend and make the brake pads stuck.

After replacing the brake pads, be sure to step on the brakes a few times to eliminate the gap between the shoe pads and the brake disc, resulting in the first foot not braking, which is prone to accidents. In addition, it takes 200 kilometers to achieve the best braking effect, and the brake pads that have just been replaced must be driven with caution. Brake pads are made up of two parts:

One layer is a metal base plate, and the other layer is a friction plate.

When braking, the friction pad is in contact with the brake disc to produce friction and play the role of brake.

Obviously, the friction plates will get thinner and thinner.

The friction pad part of a new brake pad is generally 10 mm, and when 5 mm remains, it's time to consider replacing the brake pad.

The remaining 2 mm is quite dangerous and the brake pads must be replaced immediately.

Some brake pads will hide a metal needle in the friction plate, and after the friction plate is lost to a certain extent, the metal needle will contact the brake disc, and there will be a sharp abnormal sound when braking, reminding you to replace the brake pad.

If the friction pad part is completely depleted, the metal base disc will be in direct contact with the brake disc, which will not only fail to brake, but will also wear out the brake disc.

At that time, it will have to be replaced along with the brake discs, which will cost thousands of dollars.

When the tires are removed, the brake pads can be clearly seen.

Hello about this problem, first of all, I want to say that according to the different braking conditions and the difference in the installation of the braking system, there may be a certain amount of difference in the thickness of the brake pads of the left and right tires after use, which is a normal situation, such as the force and speed of the four tires when the vehicle turns There are certain differences, the friction required for braking is naturally different, and the loss of the left and right brake pads in the past is naturally different for a long time.

Secondly, the brake system not only has brake pads, but also needs brake discs to assist in completing the brake work, if the brake pads are deformed and damaged, the brake pads will inevitably appear unevenly worn; In addition, if the material of the brake pad is different, the braking effect will naturally be different, so the brake pad and brake disc need to be inspected, and as long as there is an abnormality, it should be replaced in time.

In addition, the automobile suspension system and the chassis and tires are closely related, if the car itself suspension has a problem, the load-bearing of the tire will inevitably have problems, the uneven loss of brake pads will occur, similar to this failure and the left and right brake braking time is different, the left and right tire brake oil pipeline length gap is too large and ABS control strategy failure.

If we find that the left and right brake pads are worn unevenly, it is best to check the brake pads and brake discs that can be checked, and if there is a problem, it can be dealt with by repair or replacement; If the two brake pads of a single wheel have different losses, then it is necessary to ask a professional to check the brake cylinder of the braking system and the brake itself, which may be caused by rust or lack of grease caused by poor brake caliper return, which requires a more in-depth inspection.

It may have something to do with the difference in tire pressure and the different weights on both sides, I hope it will help you.

Whether it is a national standard, a provincial standard or an enterprise standard, the braking distance of a new car is the standard for judging the quality of the safety part. The problem is that the braking performance of new cars is generally good. But due to the rapid wear and tear of the brake friction material, the brakes are not as sensitive after being used for a while.

Why Does Friction Material Wear Out So Fast? This is determined by the two properties of the friction material, namely its own wear resistance and temperature characteristics. Braking is the process of converting mechanical energy into thermal energy.

If the temperature characteristics of the friction material are not good enough, when we brake frequently, the temperature of the brake will rise sharply, which will change the friction coefficient of the brake pads, accelerate and aggravate the wear. But most of the time, the brakes are almost worn out before we adjust. For example, the takeaway boy uses the vehicle brake function very frequently, and when he realizes that he needs to adjust it, the brake pads have worn out.

What is the fundamental way to solve the rapid wear of brake materials? In fact, it is very simple, it is to improve the level of braking. The brakes are made of materials with low wear characteristics and good temperature stability, such as the ceramic brakes used in all models of Luyuan, which shortens the braking distance by 30% and extends the service life by 5 times.

Brake pads are the braking components of the car, which can ensure the normal driving of the car and the driving safety of the owner. Usually, cars are mainly undergoing maintenance and more checks are done on the brake pads. If a problem is found, it can be dealt with in time to ensure the normal use of the brake pads.

Generally speaking, brake pads can be divided into disc brakes and drum brakes.

Drum brakes, the material used in brake pads, are low-cost and mostly used in large vehicles, while disc brakes are suitable for ordinary cars. The materials are divided into resin brake pads, powder metallurgy brake pads, carbon composite brake pads and ceramic brake pads. Very complex in the entire braking system.

A good braking system needs to provide sufficient stable braking power, as well as good hydraulic transmission and heat dissipation capacity. The brake caliper of the braking system is damaged for a long time, resulting in the brake not being able to return to its original position, causing the disc, disc or drum to drag and wear for a long time, causing severe wear. The materials used in the brake pads do not meet the requirements, and the density on the design friction layer is unreasonable, and it will be in a small situation, which is one of the reasons for the premature wear of the brake pads.

The design area of the brake surface of the original car is very small. If used in high temperatures and for long periods of overspeed, it is also the reason why brake pads wear out quickly. Therefore, car owners should pay attention to the maintenance of brake pads during driving.

It may be that your usual braking habits are not very good, and you often slam on the brakes, so the brake pads are particularly worn.

It is because of long-term speeding and high temperatures, so the brake pads wear out very quickly.

The frequency of use is related to the force of the brake pad, and the brake pad should also be maintained in time, and if it is worn out quickly, it should be replaced in time.

It may be that the thickness of the brake pad itself is not up to standard, and there is no good habit of stepping on the brakes during the driving process, resulting in rapid wear of the brake pads.

Pacific Automobile Network] Serious wear of brake discs will occur: 1. Weak brakes; 2. Brake shake and abnormal noise; 3. Damage to the brake disc, resulting in premature excessive wear of the brake disc; 4. Serious damage to the braking system. The brakes of the car are a very important part of the safety when driving.

The maximum wear limit of the brake disc is 2 mm, and the brake disc must be replaced with a new one after the limit has been used. However, in actual use, most car owners do not strictly implement this standard.

The frequency of replacement should also be measured according to the driving habits, and the general measurement standards are as follows: 1. Look at the replacement frequency of brake pads. If the frequency of replacement of the disc is very high, it is recommended to check the thickness of the brake disc more, after all, the cost of the disc is relatively fast, it means that the brake is used a lot, so it is necessary to check the brake disc regularly.

2. According to the wear and tear situation: because the brake disc is not only normal wear, but also because of the quality of the brake pad or brake disc and the wear caused by foreign bodies in the normal use process, if the brake disc is worn by foreign bodies in some deep grooves, or the disc surface is worn out of deviation (some places are thin, some places are thick), it is recommended to replace them, because this kind of wear and tear will directly affect safe driving after the deviation.