1, Graphite Material can be used as refractories: graphite and its products with high temperature, high strength properties, in the metallurgical industry is mainly used to manufacture graphite crucible, commonly used in steel for steel ingot protection agent, metallurgical furnace lining The
2. Graphite Material can be used as conductive materials: used in the electrical industry for the manufacture of electrodes, brushes, carbon rods, carbon tubes, mercury positive flow of the positive, graphite gaskets, telephone parts, TV picture tube coating.
3. Graphite Material can be used as wear-resistant lubricants: graphite in the machinery industry often as a lubricant. Lubricants are often not in high-speed, high temperature, high pressure conditions, and graphite wear-resistant materials can be 200 ~ 2000 ℃ temperature at a high sliding speed, no oil work. Many of the equipment for the transport of corrosive media, widely used Graphite Material made of piston cups, seals and bearings, they do not need to add lubricating oil. Graphite milk is also a good lubricant for many metalworking (wire drawing, tube).
4. Graphite material can be made of corrosion-resistant materials: graphite has good chemical stability, after special processing of graphite, with corrosion resistance, good thermal conductivity, low permeability characteristics, a large number of used for the production of heat exchangers, Condensers, combustion towers, absorbers, coolers, heaters, filters, pump equipment. Widely used in petrochemical, hydrometallurgical, acid and alkali production, synthetic fiber, paper and other industrial sectors, can save a lot of metal materials.
The variety of impermeable graphite due to different resin contained, corrosion resistance is also different. Such as phenolic resin impregnator acid, but not alkali; furfuryl alcohol resin impregnated both acid and alkali. Different types of heat resistance are also different: carbon and graphite in a reducing atmosphere can withstand 2000 ~ 3000 ℃, respectively, in the oxidation atmosphere at 350 ℃ and 400 ℃ began oxidation; impermeable graphite varieties with the immersion agent, the general By the phenolic or furfuryl alcohol impregnated heat resistance below 180 ℃.
5. Graphite Material can be used for casting, sanding, stamping and high temperature metallurgical materials: graphite thermal expansion coefficient is small, and the ability to quench the rapid changes in the glass can be used as a mold, the use of graphite after the black metal to obtain the size of the castings, Smooth processing rate, without processing or processing can be used, thus saving a lot of metal. Production of cemented carbide and other powder metallurgy process, usually made of Graphite Material and stamping die with the porcelain boat. Monocrystalline silicon crystal growth crucible, regional refining containers, bracket fixtures, induction heaters are made of high purity graphite processing. In addition, graphite can also be used for vacuum smelting graphite insulation board and base, high temperature resistance furnace tube, rod, plate, grid and other components.
6, Graphite Material can be used for atomic energy industry and defense industry materials: graphite has a good neutron modifier for atomic reactors, uranium-graphite reactor is a more application of an atomic reactor. As the power of the atomic energy reactor in the slowdown material should have a high melting point, stable, corrosion-resistant properties, graphite can meet the above requirements. As the atomic reactor with high purity graphite requirements, impurity content should not exceed dozens of PPM. Especially in which the boron content should be less than 0.5PPM. In the defense industry, graphite is also used to make solid fuel rocket nozzles, missiles nose cone, parts of space equipment, insulation materials and anti-ray materials.