To understand what graphite products include and what graphite products have, we must first understand some characteristics of graphite, so that we can know what industry and environment graphite is suitable for from its physical and chemical characteristics. Graphite has high temperature resistance: the melting point of graphite is 3850 ± 50 ℃, and the boiling point is 4250 ℃; conductivity and thermal conductivity: the conductivity of graphite is 100 times higher than that of general non-metallic minerals. Its thermal conductivity exceeds that of metal materials such as steel, iron and lead. lubricity; Chemical stability.
According to the graphite characteristics listed above, graphite products and products are applicable to the following industries.
Graphite products I. as refractory materials
One of the main uses of graphite is to produce refractory materials, including refractory bricks, orange juice, continuous casting powder, casting core, casting detergent and high temperature resistant materials. Taoqiao.com
(L) magnesia carbon brick and magnesia carbon refractory. Content from:
(2) aluminum carbon brick aluminum carbon refractory material is mainly used for continuous casting, protective cover of flat steel billet self-aligning pipeline, underwater nozzle and oil well blasting barrel.
(3) crucibles and related products: shaped and fire-resistant crucibles and related products made of graphite, such as crucibles, curved bottles, plugs and nozzles.
Graphite products II. Conductive materials
Graphite is widely used in the electrical industry as electrode, brush, carbon rod, carbon tube, positive electrode of mercury rectifier, graphite gasket, telephone parts, coating of TV picture tube, etc.
Graphite products III. wear resistant and lubricating materials
Graphite is often used as lubricant in machinery industry. Many equipment conveying corrosive media widely use graphite materials to make piston rings, sealing rings and bearings. They do not need to add lubricating oil during operation. Graphite emulsion is also a good lubricant for many metal processing (wire drawing and pipe drawing).
Graphite products IV. as corrosion-resistant materials
Graphite has good chemical stability. Specially processed graphite is widely used for making heat exchangers, reaction tanks, condensers, combustion towers, absorption towers, coolers, heaters, filters, pumps and other equipment due to its corrosion resistance, good thermal conductivity and low permeability.
Graphite products v. for casting, foundry, die casting and high-temperature metallurgical materials
Due to the small expansion coefficient of graphite, it can withstand the change of rapid cooling and heating. In the production of cemented carbide and other powder metallurgy processes, graphite materials are usually used to make dies and boats for sintering. Crystal growth of monocrystalline silicon, regional refining vessels, supports, fixtures, induction heaters, etc. In addition, graphite can also be used as graphite insulation board and base for vacuum smelting, as well as tubes, rods, plates, grids and other components of high-temperature resistance furnaces.
Graphite products VI. as anti scaling and anti rust materials
Graphite can prevent boiler scaling. Tests by relevant units show that adding a certain amount of graphite powder to water (about 49-59 per ton of water) can prevent boiler surface scaling. In addition, graphite can be coated on metal chimneys, roofs, bridges and pipes to prevent corrosion and rust.
