The most comprehensive technical interpretation of brake pads
The brake pad refers to the friction material fixed on the brake drum or brake disc that rotates with the wheel. The friction lining and the friction pad in it are subjected to external pressure to generate friction so as to achieve the purpose of vehicle deceleration. The friction block is the friction material that is pushed and squeezed on the brake disc by the clamping piston. Due to friction, the friction block will gradually wear out. Generally speaking, the lower the cost of the brake pad, the faster the wear. The friction block is divided into two parts: the friction material and the bottom plate. The friction material part can still be used after wear and tear. After the friction material is used up, the bottom plate will directly contact the brake disc, which will eventually lose the braking effect and damage the brake disc. Brake disc repairs are very expensive.
In general, the basic requirements for brake pads mainly include wear resistance, large friction coefficient, and excellent heat insulation performance. According to different braking methods, brake pads can be divided into:
There are two types of drum brake pads and disc brake pads. According to different materials, brake pads can generally be divided into three types: asbestos type, semi-metal type, and NAO type (ie non-asbestos organic type) brake pads. With the rapid development of modern technology, like other components of the braking system, the brake pads themselves have been constantly developing and changing in recent years. In the traditional manufacturing process, the friction material used on the brake pad is a mixture of various binders or additives, and fibers are added to it to improve its strength and play a reinforcing role. Brake pad manufacturers are often tight-lipped about the announcement of the materials used, especially the new formula. Of course, some ingredients such as: mica, silica, rubber chips, etc. are public. The final braking effect, wear resistance, temperature resistance and other properties of the brake pad will depend on the relative proportions of different components. The following is a brief talk about the brake pads of several different materials. Asbestos-type brake pads Asbestos has been used as a reinforcement material for brake pads from the very beginning. Due to the high strength and high temperature resistance of asbestos fibers, it can meet the requirements of brake pads, clutch discs and liners. This fiber has a strong tensile capacity, which can even match high-grade steel, and can withstand high temperatures of 316°C. What's more, asbestos is relatively cheap, and it is extracted from the ore of amphibole, which has been found in large quantities in many countries. In the proportion of asbestos-type brake pads, asbestos accounts for 40-60%, but people now find that most asbestos is potentially harmful. Asbestos has been confirmed by the medical profession as a carcinogen. Its needle-like fibers can easily enter the lungs and Staying, causing stimulation, can eventually lead to the occurrence of lung cancer, but the incubation period of this disease can be as long as 15-30 years, so people often do not realize the harm caused by asbestos. As long as the asbestos fiber is fixed by the friction material itself, it will not cause harm to the health of the staff. However, when the asbestos fiber is discharged along with brake friction to form brake dust, it may become a series of health-related sources.
The brake pad refers to the friction material fixed on the brake drum or brake disc that rotates with the wheel. The friction lining and the friction pad in it are subjected to external pressure to generate friction so as to achieve the purpose of vehicle deceleration. The friction block is the friction material that is pushed and squeezed on the brake disc by the clamping piston. Due to friction, the friction block will gradually wear out. Generally speaking, the lower the cost of the brake pad, the faster the wear. The friction block is divided into two parts: the friction material and the bottom plate. The friction material part can still be used after wear and tear. After the friction material is used up, the bottom plate will directly contact the brake disc, which will eventually lose the braking effect and damage the brake disc. Brake disc repairs are very expensive.
In general, the basic requirements for brake pads mainly include wear resistance, large friction coefficient, and excellent heat insulation performance. According to different braking methods, brake pads can be divided into:
There are two types of drum brake pads and disc brake pads. According to different materials, brake pads can generally be divided into three types: asbestos type, semi-metal type, and NAO type (ie non-asbestos organic type) brake pads. With the rapid development of modern technology, like other components of the braking system, the brake pads themselves have been constantly developing and changing in recent years. In the traditional manufacturing process, the friction material used on the brake pad is a mixture of various binders or additives, and fibers are added to it to improve its strength and play a reinforcing role. Brake pad manufacturers are often tight-lipped about the announcement of the materials used, especially the new formula. Of course, some ingredients such as: mica, silica, rubber chips, etc. are public. The final braking effect, wear resistance, temperature resistance and other properties of the brake pad will depend on the relative proportions of different components. The following is a brief talk about the brake pads of several different materials. Asbestos-type brake pads Asbestos has been used as a reinforcement material for brake pads from the very beginning. Due to the high strength and high temperature resistance of asbestos fibers, it can meet the requirements of brake pads, clutch discs and liners. This fiber has a strong tensile capacity, which can even match high-grade steel, and can withstand high temperatures of 316°C. What's more, asbestos is relatively cheap, and it is extracted from the ore of amphibole, which has been found in large quantities in many countries. In the proportion of asbestos-type brake pads, asbestos accounts for 40-60%, but people now find that most asbestos is potentially harmful. Asbestos has been confirmed by the medical profession as a carcinogen. Its needle-like fibers can easily enter the lungs and Staying, causing stimulation, can eventually lead to the occurrence of lung cancer, but the incubation period of this disease can be as long as 15-30 years, so people often do not realize the harm caused by asbestos. As long as the asbestos fiber is fixed by the friction material itself, it will not cause harm to the health of the staff. However, when the asbestos fiber is discharged along with brake friction to form brake dust, it may become a series of health-related sources.
