1. High temperature resistance: Graphite rod is one of […]
1. High temperature resistance: Graphite rod is one of the currently known high temperature resistant materials. Its melting point is 3850 ℃ ± 50 ℃, and its boiling point is as high as 4250 ℃. In the ultra-high temperature arc of 7000 ℃, the loss of graphite is small, only 0.8% of the total weight in 10 seconds, therefore, the high temperature resistance of graphite is very outstanding.
2. Thermal shock resistance: Graphite has good thermal shock resistance. When the temperature changes suddenly, due to the small thermal expansion coefficient, no cracks will occur.
3. Thermal and electrical conductivity: Graphite has good thermal and electrical conductivity. Compared with ordinary materials, thermal and electrical conductivity is very high, four times higher than stainless steel, two times higher than carbon steel, and 100 times higher than metal aluminum. Times.
4. Lubricant: The lubrication performance of graphite is similar to that of MoS2, and the friction coefficient is less than 0.1. Its lubricating properties vary with the size of the graphite sheet. The larger the sheet, the smaller the coefficient, and the better the lubricating performance.
5. Chemical stability: Graphite has good chemical stability at room temperature, resistance to acid, alkali and organic solvents. Graphite rods are 2-280mm in diameter and 302000mm in length, and are mainly used in metallurgy, chemical industry, electrical industry and machinery industry.