The refractory material , graphite and graphite products have the properties of high temperature resistance and high strength. They are mainly used to make graphite crucible in metallurgical industry. Commonly it’s used as a protective agent for steel ingot in steel making.
Graphite is often used as lubricant in mechanical industry. The lubricating oil often can not be used under the condition of high speed, high temperature and high pressure, but the graphite wear resistant material can be operated at a temperature of 200~2000 DEG C at a high sliding speed without lubricating oil. The piston cup, sealing ring and bearing which are made of graphite material are used in a lot of equipment conveying corrosive medium widely, they do not need to add lubricating oil. Graphite grease is the good lubricant in many metal processing.
The conductive material , graphite is used for manufacturing the electrode, carbon nanotubes, carbon brush, and the positive electrode of the mercury rectifier,graphite gasket, telephone parts, TV tube coating etc.in the electrical industry .
Graphite has good chemical stability, the graphite products after special processing with corrosion resistance, good thermal conductivity, low permeability, it is widely used in the manufacturing of the heat exchanger, the reaction tank, condenser, combustion tower, absorption tower, cooler, heater, filter and pump equipment in petrochemical industry, hydrometallurgy, acid and alkali production, synthetic fiber, paper and other industrial sectors, it can save a lot of metal materials.
Casting, molding and high-temperature metallurgical materials because the graphite thermal expansion coefficient is small, and the capability of cold and hot change, it can be used as a mold of the glass, the use of graphite after black metal castings get precise size, smooth surface, high rate of finished products, it can be used without processing or minor processing, thus saving a lot metal.
