The brake pad is also called the brake skin.In the cars brake system, the brake pads are the most critical safety parts. The quality of all brake effects is a decisive role in the brake pads, so good brake pads are the protector of people and cars.How often does the brake pads change?How to change the brake pads?What material is good for brake pads?How to look at the degree of brake pads?Life is safe. Below is the intellectual encyclopedia of brake pads.
Profile of brake pads
The brake pads (English name: brakelining) is generally composed of steel plates, bonding thermal insulation layers and friction blocks. The steel plate should be painted to prevent rust.To ensure quality.Among them, the thermal insulation layer is composed of non -heat transfer materials, the purpose is to heat up.The friction block consists of friction materials and adhesives. It is squeezed on the brake disc or the brake drum during braking to produce friction during the brake, so as to achieve the purpose of the vehicle deceleration and brake.Due to friction, friction blocks will gradually be worn. Generally speaking, the lower the brake pads that cost, the faster the cost.After the friction materials are used, the brake pads should be replaced in time, otherwise the steel plate and the brake disc will be directly contacted, and the brake effect will eventually lose the brake effect and damage the brake disc.
Brake pads
The car brake pads are divided into the type:
-. brake pads for disc brakes
Second, the brake hoof for drum brakes
Third, for large trucks to make films
There are: semi -metal, less metal, asbestos, ceramics,
The brakes are equipped with a brake hoof, but most people are called brake pads to refer to brake pads and brake hoofs, so they use "disc brake pads" to specify the brake pads installed on the disc brake.Its not a brake disc.
Brake pad material
(1) asbestos
Asbestos is the earliest material used in clutch pads, because it has excellent heat resistance and friction performance, but because asbestos has carcinogenicity and hidden health hazards, the development of brake pad materials will no longer use asbestos.
(2) Non -metal materials
Generally refers to a composite material consisting of cellulose, sintering glass, and Fangcin polyurethane. For brake pad materials, non -metal does not have a good market. Although non -metal materials will not produce scratches on the rotor, they often produce a large amount of large amountsDust, life and strength need to be improved.
(3) Half metal material
It is composed of various sintering metals and synthetic materials. It has a long life when used as a band. Under high temperature conditions (> 200 ° C), it has excellent abrasion resistance and anti -fading ability is better than non -metal materials, butThe wear of rotor will be more serious, and the braking capacity of semi -metal materials is worse.
(4) All metal
The materials made of black metals and non -ferrous metals, inorganic and organic fibers, a large amount of carbon -containing and sulfide lubricants are mainly steel with steel, with high friction coefficients (0.38 ~ 0.50).The braking performance is superior.The life of all -metal shots is longer, but the wear of the rotor is also serious, and at the same time, it will produce great noise.
(5) Organic materials
Most of the organic lining now is to compose fiber or cellulose and other materials into organic resin, add various lubricants and modifiers to improve the performance of the composite organic material of the brake pads.(0.33 ~ 0.40), at a lower temperature (<200 ° C), it has excellent wear resistance.
(6) Aramit
The heat resistance of the aracelase is better than the thermal resistance in the organic lining mentioned above, and the nylon material obtained by short fiber sticking together is also very friction.Although the intensity of the aramid is very high, it is very sensitive to the environment, and a small amount of oil will reduce the life of the aramid band.
(7) sintering iron
Pour the powder -shaped metal material into the abrasive gear and melt at high temperature and high pressure.Many metals can be sintered as clutch lining, but iron is the most common.The biggest advantage of sintering iron plates is that it has both anti -slip ability and excellent friction coefficient, so as to make it a very ideal brake pad material, but the iron quality is heavier and the anti -abrasion performance is not good.
(8) Carbon material
Carbon material is a new type of material developed in recent years and is a technology for the latest development of clutch bands.The quality of the carbon jersey is light, high in strength, and excellent thermal resistance-can withstand high temperatures of 800 ~ 1000 ° C. By adding a friction improvement agent, the friction performance of carbon materials can be enhanced, so that it has good application prospects.

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