As a conductive material: used in the electrical industry to manufacture electrodes, brushes, carbon rods, carbon tubes, positive electrodes for mercury rectifiers, graphite gaskets, telephone parts, coatings for television tubes, etc.
As a wear-resistant lubricating material: Graphite is often used as a lubricant in the mechanical industry. Lubricating oil cannot be used under high speed, high temperature, and high pressure conditions, while graphite wear-resistant materials can operate without lubricating oil at high sliding speeds at temperatures of (1) 200-2000 ℃.
Many configurations that transport corrosive media generally accept graphite materials to make piston cups, sealing rings, and bearings, which do not require lubricating oil during operation. Graphite emulsion is also a good lubricant for many metal processing (wire drawing, tube drawing).
Graphite rods have good chemical stability. Specially processed graphite has the characteristics of corrosion resistance, good thermal conductivity, and low infiltration and leakage rate. It is widely used in the production of heat exchangers, such as sound tanks, condensers, combustion towers, absorption towers, coolers, heaters, filters, and pump configurations. Widely used in industrial sectors such as kerosene chemical industry, hydrometallurgy, acid-base production, synthetic fiber, papermaking, etc., it can save a large amount of metal materials.
Used for casting, sand turning, die pressing, and high-temperature metallurgical materials: Due to the small coefficient of thermal expansion of graphite and its ability to withstand sudden changes in cooling and heating, it can be used as a mold for glassware. After using graphite, black metal can be used to obtain castings with precise dimensions, smooth appearance, and high yield. It can be used without processing or slight processing, thus saving a large amount of metal.
Powder metallurgy processes such as producing hard alloys typically use graphite materials to make ceramic boats for pressing and sintering. The crystal growth crucible for monocrystalline silicon, regional refining containers, support fixtures, and felt heaters are all processed from high-purity graphite. Other graphite can also be used as graphite insulation plates and bases for vacuum smelting, high-temperature resistance furnace tubes, rods, plates, grids, and other components.