What are the basic properties of friction plates?

Friction material is a component material applied in power machinery and relies on friction to perform braking and transmission functions. It mainly includes brake linings (brake pads) and clutch faces (clutch pads). Brake pads are used for braking, and clutch pads are used for transmission.

Generally, the basic requirements for brake pads mainly include wear resistance, high friction coefficient and excellent thermal insulation performance. According to the asbestos-free organic brake material, it is mainly developed as a substitute crystal for asbestos, and is used for brake drums or brake shoes. Any mechanical device and a variety of vehicles in motion must have brakes or transmissions.

Friction materials are a key component in such brakes or transmissions. Its primary function is to absorb or transmit power through friction. For example, the clutch pads transmit power, and the brake pads absorb kinetic energy.

They enable machinery and equipment to work safely and reliably with all kinds of motor vehicles. Therefore, friction material is a widely used and critical material.

Friction material is a kind of polymer ternary composite material, which is a physical and chemical complex. It is a product made of three categories of polymer binders (resin and rubber), reinforcing fibers and friction performance modifiers and other compounding agents, through a series of production and processing. Friction materials are characterized by good friction coefficient and wear resistance, as well as certain heat resistance and mechanical strength, which can meet the performance requirements of vehicle or machinery transmission and braking.

They are widely used in automobiles, trains, aircraft, oil drilling rigs and other types of construction machinery and equipment. Civilian products such as bicycles and washing machines are indispensable materials for power transmission or braking and deceleration.

Friction plates have 3 basic requirements in terms of performance:

1 Appropriate coefficient of friction: The coefficient of friction is the basic parameter of the friction material, which determines the basic braking torque of the brake pad. The national standard strictly requires manufacturers to indicate the coefficient of friction on the packaging.

The coefficient of friction must be appropriate, too high can cause wheel locking, loss of direction and burnout during braking, and too low a braking distance is too long.

2 Reliable safety: Brake pads produce instantaneous high temperatures when braking, especially at high speeds or when braking in an emergency. At high temperatures, the coefficient of friction of the friction plate decreases, which is called thermal decay. The level of thermal decay determines the safety of high temperature conditions and emergency braking.

3. Satisfactory comfort: Comfort is the direct embodiment of friction performance, including braking feeling, noise, dust, smoke, odor, etc. With the increase of private cars and the improvement of people's living standards, comfort has increasingly become an important indicator of friction plates under the basic premise of meeting safety.

Friction materials are broadly divided into the following categories:

1. The main formula of this kind of friction material friction plate is rubber, cork and fiber, which does not contain asbestos, which can play a good friction coefficient, and can meet the basic requirements of wear resistance, no noise and environmental protection, and is a commonly used material in motorcycle clutches.

2. Paper-based friction materials: This kind of friction material friction plate is mainly made of imported carbon fiber, aramid and imported resin, which can be used for racing cars and large-displacement motorcycles, especially its friction coefficient is very stable, the high-temperature friction coefficient decay is very small, ablation resistance, and good thermal recovery performance (after the high-temperature clutch slips, the friction coefficient quickly returns to its original state after the clutch is cooled).

3. Resin-based friction materials: This kind of friction material friction plate is mainly made of reinforcing fiber, friction powder and resin, which has the characteristics of high hardness, wear resistance, high temperature resistance of 350 degrees, etc., and is mainly used in various mechanical clutches and motor reducers, and its performance is comparable to that imported from Taiwan.

4. Carbon fiber friction material: This kind of friction material friction plate is mainly made of carbon fiber, imported rubber and imported cork as the main raw materials, processed by high-quality technology, with high temperature resistance of 350 degrees, wear resistance of 25,000 kilometers, no noise, no slip and ablation resistance, etc., is a fine friction material.

5. Semi-metallic friction materials: This kind of friction material friction plate is mainly made of rubber, friction powder, fiber and metal fiber, the product has the characteristics of wear resistance, super hardness, high friction coefficient, etc., and is the best partner used in mechanical clutch and motor brake system.

Friction plates refer to components composed of chips and friction linings or friction material layers, which are widely used in the fields of mechanical engineering, mechanical parts and clutches.

The commonly used friction surface materials include powder metallurgy materials, asbestos-based materials and paper-based materials. Powder metallurgy materials: the allowable temperature, pressure, friction coefficient and life of the surface are high at high temperature.

Asbestos-based materials: molded with asbestos binders and fillers, consolidated on steel or iron bottom plates, and the allowable working temperature is low. Paper-based materials:

It is made by interweaving asbestos, plant fibers, or a mixture of the two, and bonding with resin, etc., after adding fillers. It is porosity and has good friction properties.

Automobile friction plates are mainly used to increase friction, such as friction plates in different parts of the specific role is similar. For example, the clutch friction plate is used to disconnect and transmit engine power, so whether the friction plate is intact is very important for the car.

Friction pads are a key component in automotive brakes and transmissions, so the materials used in them also have strict requirements. In the early stage of the development of friction plates, due to the fact that industrial technology was not as developed as it is today, common easy-to-process materials such as cotton, cotton and leather were used as the main body, but with the increasing update of science and technology, the friction plates gradually mainly used asbestos jujube materials.

Compared with cotton, leather and other materials, asbestos material has better heat resistance, and the effect on heat dissipation and softness is also considerable. Nowadays, because people realize that asbestos and other materials will have an adverse effect on human health due to the combustion of friction, most of the vehicles now use friction plates without asbestos friction materials, and most of the friction plates are made of semi-metal in cars and heavy vehicles, and machines such as machinery and aircraft in heavy industry are used in leakage fiber powder metallurgy friction materials, which have the advantage of long life, and the disadvantage is obviously high noise and high quality.

How do car friction plates burn out in general?

1. The high oil temperature of the transmission causes the clutch to slip. Clutch slippage will cause the clutch clearance to be too small, which will cause the friction of the friction plates to increase and cause scorching.

2. When the clutch is working by friction, the temperature of the local area of the friction plate is too high, resulting in the high temperature of the friction plate resulting in bending and deformation, so that it cannot be used normally.

3. The powder metallurgy friction material on the friction plate falls off due to the uneven fiber layer made at the beginning.

In addition to the above quality problems, most of the damage of friction plates is caused by improper use, so when maintaining good car driving habits.

Photo by Pacific Automobile Network Q&A).

Automotive friction plates are mainly used to increase friction. For example, the specific functions of friction plates in different parts are similar. For example, the clutch friction plate is used to disconnect and transmit engine power, so whether the friction plate is intact is very important to the car.

Friction pads are a key component of automotive brakes and transmissions, so the materials used in them also have strict requirements. In the early stage of development, due to the fact that industrial technology was not as developed as it is now, friction plates were mainly made of common and easy-to-process materials such as cotton, cotton, leather, etc. However, with the development of technology, friction plates are gradually made of asbestos.

Compared with materials such as cotton and leather, asbestos has better heat resistance and is effective in heat dissipation and softness. Nowadays, due to the awareness that materials such as asbestos can have adverse effects on human health due to frictional combustion, most vehicles now use friction plates that do not contain asbestos friction materials. Most of the friction plates on automobiles and heavy vehicles are made of semi-metallic materials, while heavy industrial machinery, aircraft and other machines use powder metallurgy friction materials, which have the advantages of long service life, but the disadvantages of high noise and high noise in Shidong are obvious.

How do car friction plates generally burn out?

1.The high oil temperature of the transmission causes the clutch to slip. Clutch slippage can cause the clutch clearance to be too small, which can lead to increased friction on the friction plates and cause combustion.

2.Because the local temperature of the friction plate is too high when the clutch is working, the friction plate is bent and deformed due to the high temperature, and cannot be used normally.

3.The powder metallurgy friction material on the friction plate is uneven due to the uneven shedding of the original fiber layer.

In addition to the above quality problems, most of the friction plates are damaged due to improper use, so when you maintain good driving habits.

Answer: According to the exclusive research and development of friction material formula, production management system, and unique processing technology to judge. The characteristics of the three-point friction plate are obtained:

1. Exclusive research and development of friction material formula.

High-quality friction plate manufacturers have their own friction material research institute, has been committed to the development and research of friction material formulas, has several sets of friction material formulas, according to the characteristics of customers and product requirements, targeted development, improve the high temperature resistance, friction coefficient and torque of friction plates.

2. Production management system.

Regardless of product grade, the products in the supporting market and the maintenance market implement a unified TS16949 quality management system, and the host market and the aftermarket implement a unified friction material formula to ensure that the quality of high-quality friction products is always unified and leading the industry.

3. Unique processing technology.

The high-quality friction plate is different from other different friction plate brands with many different processing technologies, and the product quality is strictly controlled to ensure that the high-quality friction products have a more stable friction coefficient under high temperature conditions.