Can graphite products be calcined in air for a long time?
Because graphite has many excellent properties, it has been widely used in metallurgy, mechanical, electrical, chemical, textile, national defense and other industrial sectors. Refractory material. The graphite product keeps the original chemical properties of flake graphite and has a strong self lubrication performance. The characteristics of graphite powder is of high strength, corrosion resistance and acid resistance of the high temperature of 3000 DEG C and resistance to low temperature of -204 DEG C, and its compressive strength is greater than 800kg/Cm2, and the antioxidant, at 450 degrees Celsius in the air was 1%, rebound rate of 15-50% (density 1.1-1.5). Therefore, graphite products have been widely used in metallurgy, chemical, petrochemical, high energy physics, aerospace, electronics and so on.
Graphite products are characterized by high thermal conductivity, and stable performance at high temperatures, in the use of the process, even if the temperature is very high, still able to maintain good performance. Graphite crucible thermal expansion coefficient is very small, in the cold, hot situation is still very little impact on the performance of the crucibleGraphite crucible is superior in smelting, alloy, tool steel, non-ferrous metals and other alloy smelting has good advantages, so it is widely used in metallurgy, casting, machinery, chemical and other industrial sectors. The application of the graphite crucible has a good effect both technically and economically.
Tolerable。One of the main uses of graphite is to produce refractories, including refractory bricks, crucibles, continuous casting powders, mold cores, molds, detergents and high temperature resistant materials. In recent years, two important changes in the refractory industry is MgO-C brick is widely used in steelmaking furnace lining, and the application of aluminum carbon brick in continuous casting process. The graphite refractories and steelmaking refractories are closely linked, the world steel industry about consumption.
