Powder metallurgy friction materials
Powder metallurgy friction materials are a high-tech material developed in recent years. It consists of various metal powders, such as copper powder and aluminum powder, processed by compression molding, sintering and other processes into a friction material. It has the advantages of high elasticity, good heat dissipation, low friction coefficient, strong wear resistance and other characteristics, and has become a new generation of materials popular in the world.
In powder metallurgy friction materials, metal powders are usually mixed with organic binders, lubricants and other organic matter, then compacted and sintered in a certain pressure, temperature, time and other conditions, and then the friction material is formed. According to the shape, it is usually divided into three basic types: plate, ring, and bar. Due to the high elasticity of the sintered material, it is mainly used as cushioning components (such as cushion, spring, lock and stop washer, etc.), sealing components (such as O-ring, gasket and wear ring, etc.), motor parts, pump parts and automobile parts. And it has a wide range of applications.
Powder metallurgy friction materials have better wear resistance and heat dissipation than traditional friction materials, and can effectively reduce the coefficient of friction between two planes. For example, CuMn and copper-aluminum graphite composite materials, which are made of copper powder, aluminum powder and graphite composite powder, have an extremely low coefficient of friction after sintering and can reduce the contact friction between two planes to only 0.002. The use of such materials can reduce the heat and wear of the sliding parts, and its high precision parts are widely used in precise mechanisms, such as servo motors, speed reducers and automotive engines.
Not only that, powder metallurgy friction materials can also improve the performance of the friction surface, reduce the vibration of the machine components, and reduce the amount of lubricating oil consumption. Different friction materials are used in different functional components of automobiles, pumps, motorcycles and other machinery to ensure that the components are friction and wear resistant, low coefficient of friction, strong heat dissipation and long life.
At present, powder metallurgy friction materials have been widely used in various industries, such as aerospace, defense industry, automobile manufacturing, electrical engineering, instrumentation, robots and so on. With the continuous development of industry and technology, powder metallurgy friction materials will become the main development direction of friction materials, and its application range will be further expanded, ushering in a wider application field.
