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Ten application areas of graphite materials

August 15, 2023

1Graphite materials can be used as refractory materials: graphite and its products have the properties of high temperature resistance and high strength. It is mainly used to make graphite crucible in the metallurgical industry. In steel making, graphite is commonly used as the protective agent of steel ingot and the lining of metallurgical furnace.

2.Graphite material can be used as conductive material: used in the electrical industry for the manufacture of electrode, brush, carbon rod, carbon tube, mercury positive electrode, graphite washer, telephone parts, TV picture tube coating

3.Graphite material can be used as wear-resistant lubrication material: graphite is often used as a lubricant in the machinery industry. Lubricating oil often can not be used in high speed, high temperature, high pressure conditions, and graphite wear-resistant materials can be in 200~2000 ℃ temperature at a very high sliding speed, without lubricating oil work. Many corrosive media conveying equipment, widely used graphite materials made of piston cups, seals and bearings, they do not need to add lubricating oil when running. Graphite milk is also a good lubricant for many metal processing (wire drawing, tube drawing).

4.Graphite materials can be graphite has good chemical stability. After special processing of graphite, with corrosion resistance, good thermal conductivity, low permeability, it is widely used in the production of heat exchanger, reaction tank, condenser, combustion tower, absorption tower, cooler, heater, filter, pump equipment. Widely used in petrochemical industry, hydrometallurgy, acid and alkali production, synthetic fiber, paper and other industrial sectors, can save a lot of metal materials

The variety of impervious graphite due to the different resin, corrosion resistance is also different. Such as phenolic resin impregnated acid resistant, but not alkali resistant; Furfuryl alcohol resin impregnators are resistant to both acid and alkali. The heat resistance of different varieties is also different: carbon and graphite can resist 2000~3000℃ in reducing atmosphere, and start oxidation at 350℃ and 400℃ respectively in oxidizing atmosphere; The impervious graphite variety varies with the impregnating agent, generally by phenolic or furfuryl alcohol impregnated with heat resistance below 180℃.

5.  Graphite material can be used for casting, sanding, pressing and high temperature metallurgical materials: because of the coefficient of thermal expansion of graphite is small, and the ability to change cold and hot, can be used as a glass mold, the use of graphite after black metal casting size is accurate, surface smooth yield is high, without processing or slightly processing can be used, thus saving a lot of metal. The production of hard alloy and other powder metallurgy process, usually made of graphite materials for pressing and sintering of porcelain boats. Monocrystalline silicon crystal growth crucible, zone refining vessel, bracket fixture, induction heater and so on are processed with high purity graphite. In addition, graphite can also be used for vacuum smelting graphite heat insulation plate and base, high temperature resistance furnace tube, rod, plate, grid and other components.

6Graphite materials can be used in the atomic energy industry and the defense industry: graphite has a good neutron reducer used in atomic reactors, uranium-graphite reactor is a more popular type of atomic reactor. As the decelerating material used for power nuclear reactor should have high melting point, stability, corrosion resistance, graphite can fully meet the above requirements. Graphite used as an atomic reactor requires high purity, with no more than a few dozen parts per million of impurities. In particular, boron content should be less than 0.5 PPM. In the defense industry, graphite is also used to make nozzles for solid fuel rockets, nose cones for missiles, parts for space navigation equipment, heat insulation and radiation protection materials.

7.Graphite materials can also prevent boiler scaling, the relevant unit test shows that adding a certain amount of graphite powder in water (about 4~5 grams per ton of water) can prevent scale on the boiler surface. In addition, graphite coated in metal chimney, roof, bridge, pipe can be anticorrosive rust.

8.Graphite material can be used as pencil lead, pigment, polishing agent. After special processing, graphite can be made into a variety of special materials used in related industrial sectors.

9.Graphite can be used as electrode and graphite has gradually replaced copper as the preferred material for EDM electrode.

10.Graphite looks very black, but it is the purest quality of the whole life in the world the excellent characteristics of graphite in and the great role of human balance, graphite is also known as "black gold" with graphite instead of metal used in eating utensils ink household supplies, graphite cookware, graphite tea set, graphite mattress graphite crafts.