Material classification and performance description of automobile brake pads
Automobile brake pads are an important part of automobiles. According to material classification, they can be divided into the following categories: semi-metal formula, less metal formula, ceramic formula, carbon-titanium ceramic fiber composite formula, and high-carbon formula.
1. Semi-metal brake pads, basically all the brake pads of the car series have this formula when they leave the factory. Of course, this type of brake pad is also the cheapest picture. The friction coefficient of this type of brake pad is low, and the general friction coefficient is 0.38. Short, and some manufacturers make this kind of brake pads with a high friction coefficient, of course, this is also a disadvantage and prone to noise. Generally, the use of such brake pads on Japanese cars is prone to noise. Of course, this is also inseparable from the brake disc.
2. Less metal brake pads. The price of this kind of brake pad is slightly higher than that of semi-metal. Of course, the performance will be higher. This kind of formula brake pad belongs to the mid-range, but it is not recognized in the eyes of consumers. In fact, this kind of brake pad is cost-effective. It is still very high. Of course, it is difficult for consumers to distinguish the difference between this kind of brake pads and semi-metal brake pads, so it is difficult to choose, which is why consumers do not approve (this formula is suitable for any car series)
3. Ceramic brake pads: There are many ceramic brake pads on the market now, and of course there are imitations. The ceramic brake pads made by different manufacturers are different, and their performance is similar (with photos) Of course, the raw materials of ceramic brake pads are indispensable. Ceramic fiber, this ceramic non-fired ceramic, different manufacturers of ceramic brake pads use different raw materials, which also leads to the price difference of the ceramic brake pad itself (the price of ceramic fiber varies from 20,000 to 90,000) Of course, the difference is indistinguishable in the eyes of consumers, and even manufacturers can't tell the difference between good and bad fibers. Only after using it will they know that the quality is better than bad. Real ceramic brake pads also contain aramid fibers, which are far superior to the above formula brake pads in terms of service life and brake pad performance. Of course the price is more expensive!
4. Carbon titanium ceramic fiber is a kind of friction material made of carbon fiber as reinforcement. Carbon fiber has the characteristics of high modulus, good thermal conductivity, and heat resistance. In the carbon fiber friction material component, in addition to carbon fiber, graphite and carbon compounds are also used. The organic binder in the component is also carbonized, so the carbon fiber friction material is also called carbon-carbon friction material or carbon-titanium friction material.
5. High carbon carbon fiber Carbon fiber friction material is the best performance among various types of friction materials. Carbon fiber friction pads have high absorption power per unit area and light specific gravity, and are especially suitable for the production of aircraft brake pads. They are also used in the brake pads of some high-end sports car-level racing cars abroad.
