Graphite can be used to produce refractory materials, conductive materials, wear-resistant materials, lubricants, high-temperature sealing materials, corrosion-resistant materials, heat insulation materials, adsorption materials, friction materials and radiation protection materials, etc. These materials are widely used in metallurgy, petrochemical industry , Machinery industry, electronics industry, nuclear industry and national defense.
In the iron and steel industry, graphite refractories are used for refractory linings of arc blast furnaces and oxygen converters, ladle refractory linings, etc.; graphite refractories are mainly monolithic casting materials, magnesia carbon bricks and aluminum graphite refractories. Graphite is also used as a film-forming material for powder metallurgy and metal casting. Graphite powder is added to molten steel to increase the carbon content of steel, so that high-carbon steel has many excellent properties.
In the electrical industry, it is used to manufacture electrodes, brushes, carbon rods, carbon tubes, mercury positive current devices, graphite washers, telephone parts, and coatings for television picture tubes.
Wear-resistant lubricating material
Graphite is often used as a lubricant in the machinery industry. Lubricating oil often cannot be used under high-speed, high-temperature, and high-pressure conditions, while graphite wear-resistant materials can work at high sliding speeds at a temperature of -200 to 2000°C without lubricating oil. Many equipment that transport corrosive media widely use graphite materials to make piston cups, seals and bearings. They do not need to add lubricating oil when they are running. Graphite emulsion is also a good lubricant for many metal processing (wire drawing, pipe drawing).