Bearing material without smooth bearing (2)

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Bearing material without smooth bearing (2)

Source: China Bearing Network Time: 2013-01-18

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2. Carbon Graphite Information Graphite is a type of non-metal material composed of carbon. It is one of the three isomers of carbon; it is a hexagonal system; each layer is composed of a hexagonal ring; the layers are parallel to the layer; Ordered stacked crystal structure.
Graphite is divided into natural graphite and artificial graphite according to the origin. Artificial graphite is formed by carbonaceous data processed by high temperature graphitization above 2500 °C.
Carbon graphite generally has good electrical conductivity, heat resistance, wear resistance, self-smoothness, high temperature stability, strong chemical resistance, high thermal conductivity than polymer, small linear expansion coefficient, and chrome plating under atmospheric and room temperature conditions. The collision factor and wear rate of the surface are very low. However, the smoothness is lost when the humidity is very low. The wear-resistant coating can improve the wear resistance of carbon graphite.
Graphite can be used not only as a solid smoothing agent; it can participate in the guessing of resin, metal, ceramics, etc.; adding the friction reducing property of these materials; it can also be directly used as a conflicting auxiliary data; such as making paper, wood processing, textile, food, etc. Bearings in the place; high temperature sliding bearings; seals; piston rings; scrapers, etc.
The “class” of carbon graphite materials for mechanical engineering is represented by M; there are four series: carbon graphite data, electrochemical graphite data, resin carbon composite materials and metal graphite materials.
3. Ceramic material ceramics are inorganic non-metallic natural minerals or artificial compounds; they are destroyed, formed and sintered at high temperature; non-metallic materials composed of many inorganic non-metallic small crystals and glass phases. Inorganic non-metallic natural mineral deposits; For example, clay, feldspar, quartz, etc. are made of traditional ceramics. The artificial ceramics are made of special materials. The ceramics used in mechanical engineering are usually alumina, magnesia, zirconia, lead oxide, 2. Special ceramics made of titanium oxide, silicon carbide, boron carbide, silicon nitride, boron nitride and other artificial compounds.
The function of ceramics is largely determined by their microstructure; including grain size and dispersion; composition and content of the glass phase; properties, content and dispersion of impurities. The microstructure is composed of materials, composition and fabrication process. The resolution of ceramics is characterized by high hardness and compressive strength, high temperature resistance, wear resistance, oxidation resistance, corrosion resistance, brittleness, impact resistance and no ductility.
Ceramic is a relatively new bearing material without smooth bearing; especially SiC and Si3N4; their strength, heat resistance and corrosion resistance are very good; conflicting function is also very good.
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