What is the principle of metal-based inlaid solid sliding bearings

Update: 05-11-2021

Metal-based inlaid solid sliding bearing (JDB for short […]

Metal-based inlaid solid sliding bearing (JDB for short) is a novel lubricating bearing that combines the characteristics of metal bearing and sliding bearing. The metal matrix receives the load, and the uniquely formulated solid lubricating material plays the role of lubrication. It has the characteristics of high bearing capacity, charge resistance, high temperature resistance, and strong sliding strength. It is uniquely used in heavy load, low speed, reciprocating or swinging scenes that are difficult to lubricate and cause oil film. It is not afraid of water wash and other acid erosion and Scour. Wide users have widely reported that inlaid bearings not only save oil and energy, but also have a longer working life than ordinary sliding bearings. At present, the products have been commonly used in metallurgical continuous casting machines, rolling equipment, mining machinery, ships, steam turbines, water turbines, injection molding machines and equipment production lines.

It is necessary to strictly limit the increase in the production rate, and the spare parts and resources are greatly disbursed, which has become an important obstacle to the development and production of JDB steel-based inlaid bearings. Automobile manufacturing, cement manufacturing, petrochemical and other companies have all put forward requirements for providing special lubricating materials under complex working conditions. For this reason, the research on the inlaid sliding composite material has its own characteristics in the formulation of the material and the preparation process. The function of the material has reached the international advanced level, which has solved the lubrication problem under unique working conditions for the enterprise, and brought obvious Economic and social benefits. However, due to a variety of reasons, more companies in China have not yet selected it, and the above situation still exists.

Due to the unique manufacturing process requirements, some major equipments of industrial and mining enterprises operate under very despicable working conditions. Due to the heavy equipment, high ambient temperature, large dust or acid corrosive gases CO, SO2 in the air, etc., it brings many problems to the lubrication of the equipment, conflict and wear are important, stop JDB steel copper inlaid bearings. Follow the traditional oil and grease lubrication, but in fact, these industrial and mining conditions have surpassed the boundary of oil and grease lubrication. It is very easy to cause bite or seizure of bearings and other conflict pairs, causing wear and damage of important parts, usually Cause the equipment to stop operating. In order to make the JDB cast iron inlaid bearings continue to operate, in addition to the original design requiring the installation of multiple equipment for round-trip repairs, a large number of maintenance staff must be invested.

The main technical principle: the inlaid sliding composite material is a new type of anti-extreme pressure solid lubricating material, which is composed of a metal substrate and a solid lubricant paste embedded in the hole or groove of the substrate. The metal substrate bears most of the load during the conflict. After the conflict, the solid lubricant in the hole or groove is transferred or reversely transferred to the conflict surface, resulting in a solid transfer film with excellent lubrication, stable adhesion and even cover on the conflict surface, which greatly reduces conflict wear. As the conflict progresses, the embedded solid lubricant is continuously provided on the conflict surface, ensuring excellent lubrication of the conflict pair during long-term operation.