Due to the requirements of special production technology, in fact, these conditions have exceeded the range of oil and grease lubrication. Some key equipment of industrial and mining enterprises are operating under extremely harsh conditions. So far, most domestic enterprises still use traditional oil and grease lubrication, due to heavy equipment, high ambient temperature, large dust or acid corrosive gases such as CO, SO2, etc. The lubrication of equipment has brought many problems and serious friction and wear. Self-lubricating bearings are liable to cause bite marks or bites on bearings and other friction pairs, leading to serious wear and damage of parts, often leading to equipment failure.
In order to produce self-lubricating bearings for continuous operation, in addition to installing a number of equipment in the original design, automobile manufacturing, cement production, petrochemical and other enterprises have proposed to provide special lubricating materials under complex working conditions. Therefore, it is necessary to install a large number of maintenance personnel for the study of mosaic self-lubricating composites. Serious restrictions on productivity growth and consumption of spare parts and energy have become an important obstacle to the development of production. Self-lubricating bearings highlight their own characteristics in the process of material formulation and preparation. Material properties have reached the international advanced level, which can solve the lubrication problems under special conditions for enterprises and bring obvious economic and social benefits.
However, for many reasons, Chinese enterprises have not passed. Composite materials used in inlaid self-lubricating bearings are a new type of compressive solid lubricating material. Self-lubricating bearings include metal-based materials and solid lubricating paste embedded in holes or grooves of bottom materials. In the process of friction, the metal matrix bears most of the load.
After friction, the solid lubricant in the hole or groove will transfer or reverse to the friction surface, and a solid transfer film with good lubrication, firm bonding and uniform coverage will be formed on the friction surface, which greatly reduces friction and wear. With the development of friction, the embedded solid lubricant is continuously supplied to the friction surface to ensure long-term good lubrication of friction pairs.