The future trend of the development of bearing materials

Domestic in composite materials research has made great progress, carry out the replace metal as friction pair with non-metal material, to some extent, overcome the key technology based on the new project of the industrialization of the composite material, the ships, and other important equipment of vibration, noise, safety and reliable technologies such as important progress has been made on the application of new materials tends to bring across the bearing performance. High speed, overload, high reliability and high accuracy of the requirements for materials, such as the mechanical properties, resistance to 暦, consistency of material and heat treatment performance were put forward very high requirements. In water lubrication shaft bearing material research, according to the village of materials can be divided into the metal, iron pear wood, fabric bakelite, bonding layer board, plastic, ceramic, rubber to metal and rubber, etc. Researchers at home and abroad in recent years in terms of water lubricated bearing material modification to do a lot of research work, also made relevant progress. Water lubricated plastic or rubber bearing has been widely used in ship industry, water or aqueous liquid water embellish smooth ceramic bearing, static pressure and guide bearing lubrication also gradually began to application. Domestic nuclear main pump bearing materials mainly use leach resin carbon graphite, shielding pump manufacturers abroad tend to use silicon carbide, Harbin institute of large motor for the silicide graphite bearing wear test, but the current domestic silicide graphite manufacturing process is not yet mature, compared with the imported silicide graphite material, the silicified graphite material physical and mechanical properties vary widely, and the product quality is not stable, have not yet applied to the main pump electric machine for aerostatic bearing, brass, copper and nickel alloy has passed and several stages such as graphite alloy foil bearing materials mainly used lubricating good beryllium copper, in order to be able to adapt to the start-stop repeatedly, even in cases of surface coating. Material all chain overall level is relatively backward in China, a big gap in terms of material standards and quality control. Material field in our country from based research to laboratory scale research, small gap with the developed countries. But for gas bearing, whether graphite alloy or box used beryllium copper, in materials, production in our country, especially the chain development, including the scale manufacturing than in terms of technology, the advanced numerical control machine tool technology to ensure that the high-end bearing the required precision machining, and domestic bearings is relatively backward. Taking measurement, imitation line for a long time, machining technology. China's high-end, high precision, high technical content of mechanical processing equipment is less, the rough type, low technical content still accounts for most of the mechanical processing equipment, you can see many famous enterprises abroad most of the production and processing machinery and equipment for production. China machinery processing equipment compared with the developed countries still have certain gap, body now the assembly process technology, production, and quality concept. It is also restricted the development of China's high-end bearing technology bottleneck in high/low temperature, strong radiation, high load and other special circumstances, a variety of new bearing lubrication material has been widely used, 4) Lubricating material and lubricant way research at the same time, the development of environmentally friendly lubricating medium and additive also caused wide attention. With water as a lubricant medium of water lubricated bearing in vessels, nuclear power and other fields. In terms of water lubricated bearing basic theory research, due to the monopoly of the market, and the military industry confidentiality requirements, the western developed countries, such as the United States, Japan, Britain, Germany and other high performance of real water lubricated bearing and system research results, the design theory, material formula, etc