What you don't know about brake pads (Part 2)
5. The brake pads I bought for 70 yuan are also very effective, right? Good braking effect?
It is very simple to realize the braking ability of the brake pads. What it needs is to maintain the stability of the brakes under high temperature, emergency, high speed, and rain conditions. This is the most difficult thing. The original car requires more indicators such as comfort, noise, environmental protection, etc., which makes the brake pads even more difficult.
Therefore, your simple normal driving feels good, but it does not mean that its safety performance can reach the effect of the brake pads on your original car in various emergency situations. To be honest, the original car of your private car only needs to change a set of brake pads after 4 or 5 years of running. If it is only 70 yuan as you said, do you think this profit can support the brake pad factory? Of course not, what can't be done? you know.
Sixth, as long as there is no noise from the brake pads, wouldn’t it be enough to stop the car? Is it that mysterious?
Sixth, as long as there is no noise from the brake pads, wouldn’t it be enough to stop the car? Is it that mysterious?
As mentioned above, it is very simple to solve the noise alone. But the main function of brake pads is not noise, but safety. Now the market really pays too much attention to the noise and ignores the main function of the brake pads.
As for what everyone said, is it enough to stop the car? That's right, just stop the car, but you may not have thought that you can stop the car on flat roads, you can stop the car at normal speeds, but can you stop the car in emergency braking situations? Can you stop the car under the high temperature of continuous braking on the winding mountain road? Can you guarantee the braking distance at a speed of 100 kilometers per hour on a rainy day? What the original car brake pads must guarantee is the stability of the braking ability when we need safety most. At this point, I believe that many car owners who think that it is enough to brake the car have not thought about it.
7. Brake pads have a short service life
7. What is the short life of the brake pads? Why do inferior products have long braking distances in emergency braking situations?
Answer: Like all objects, the strength of the intermolecular links of its material tissue decreases at high temperatures. The principle of braking is to convert kinetic energy into heat energy in the form of friction to achieve braking (energy balance theory). Therefore, a large amount of heat generated by the friction between the brake pad and the disc will accumulate on the surface of the brake pad friction material. In order to maintain sufficient strength of the brake pads under such high temperature conditions, materials such as high-temperature resistant resin, high-purity graphite, and high-purity barium sulfate must be selected, and these materials are as if you only choose the same size from a car of carbon. Like coal, the cost will rise substantially.
As for inferior brake pads, they will not use such high-end materials, so they cannot guarantee the stability at high temperatures, and as the speed increases, the heat will be more, the temperature will be higher, and the link strength will be lower, thereby reducing brake pads. Dynamic performance, expressed as extended braking distance. Therefore, the brake pads that you think are acceptable when driving at a speed of 20-60 kilometers per hour in the city do not mean that you have the same stable braking distance performance at high speeds.
When the link strength of the molecular chain is reduced at high temperature, its wear is accelerated, which is why the service life of general brand brake pads is very short in mountainous areas or under frequent sudden braking.
