What do you think about the pros and cons of brake disc punching and marking, knowledgeable friends?

Perforated discs are actually aimed at brake pads used in the early days.

Development, to this day, is actually no longer necessary after the change of brake pad material, but why perforated discs are still popular, even in high-end cars, is just because it looks cool. If you use it yourself and like to drive fast or off the track, it is recommended that you do not use perforated brake discs.

The advantages of the perforated disc disappear, and some disadvantages must be considered:

First of all, the disc surface is perforated, and the overall strength of the brake disc is reduced.

Second, because of the punching, the friction area decreases, and the friction force.

Loss. Thirdly, after punching, the heat conduction on the surface of the plate.

The area has also been reduced accordingly, which is offset by the effect that some people think can be cooled by vents.

Fourth, after a period of time, fine cracks form around the ventilation holes, which is the effect of stress, and some perforated discs produce deformation and jitter, and stress is one of the main reasons. These holes in the disc surface actually become stress points, and uneven heat flow can make the brake disc suffer a severe test. For example, the car is very fast, when turning, you have to step on the brakes, accelerate in a straight line, quickly recover to high speed, and then step on the brakes in the situation, then the brakes have experienced a great temperature change in this process, and the temperature near the vent is much lower than that of other positions, and the different temperatures on a brake disc will greatly reduce the braking effect, resulting in a friction coefficient.

Instability. In some cases where the material of the disc is not good enough and the driving is more intense, the brake disc will be deformed or even broken under pressure.

Original source of Daoda Xunxing.

At first glance, it is on paper, nonsense, I have used more than ten years to mark and punch the plate, and it is produced in Yantai, a low-end product, and there has never been any hole cracks.

Is your car made of brake discs? The next day it rusted, even if it rained on the brake discs.

If it is an ordinary cast iron brake disc, the marking and punching are good, this kind of lap disc is used in high-performance luxury cars, and the perforated brake disc is used in the general mid-to-high-end sports car.

Holes are drilled to dissipate heat and improve the resistance of brakes to thermal degradation. The purpose of scribing is to quickly drain the powder worn by the brake pads and increase the braking force, both of which are intended to improve the performance of the brakes.

Punching and marking discs are used on high-end sports cars in order to dissipate the heat that is understood when the piece is rubbing, and the punching and marking are good, and they are not used for drag racing, and the private car disc can meet the requirements of the owner.

The brake disc is better perforated:

1. For mass production manufacturers, it is too much to shout that the cost of punching and marking is too high. That's why production cars rarely have punches or scribing reels;

2. Increase the braking strength, yes. That's the fundamental. When braking, a stress will be generated to improve the braking effect (Pascal's law) The stress of the perforated disc is greater than that of the scribing, so the braking effect is much higher than the scribing;

3. Brake dust, brake dust is the main culprit affecting braking performance. The punching and marking disc can throw brake dust off the disc through its own holes and lines. Guaranteed maximum braking;

4. Weight, reduce weight. Punching is more noticeable.

1. Theoretically speaking: the maximum wear limit of the brake disc is 2 mm, and the new brake disc must be replaced after the limit is used. However, in actual use, most car owners do not strictly implement this standard.

The frequency of replacement should also be measured according to your own driving habits, and the general measurement criteria are as follows;

2. Look at the frequency of replacement 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, indicating that the brake is used a lot, so it is necessary to check the brake disc regularly;

3. According to the wear and tear of the front height: 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, because this kind of wear and tear will directly affect safe driving.

The brake disc is perforated and marked for the following purposes:

1. The brake disc is divided into a single-layer non-perforated disc, a single-layer perforated disc, a double-layer hollow perforated disc, and a single-layer non-perforated disc, which is generally widely used, and most cars are like this;

2. The advantages are low cost, small wear of brake friction block and good rigidity. The disadvantage is that the heat dissipation is not good, and the single layer is porous, which is generally used for motorcycles and some cars. The advantage is that the heat dissipation is better than that of the non-perforated disc, but the friction block is more worn, and there are too many holes, and the rigidity will reduce dust and return to the air;

3. Double-layer hollow holes are generally used in models that require large strength and long-term braking, such as sports cars and high-speed trucks. The advantage is that the heat dissipation is very good, because there are channels in the double-layer disc, which can use centrifugal force to suction air to help heat dissipation, and the stiffness is also very good;

4. The lack of bending point is that the cost is high, and the wear of the friction block is also relatively large. The main function of the hole is to dissipate heat, while the main role of the groove is to strengthen the braking effect.