Graphite wafer is made of high purity graphite. We can customize the size according to the customer's demand.
Graphite is widely used in industry, such as high temperature Products for smelting, lubricant for mechanical industry, electrode and pencil lead; high grade refractory and coating for metallurgical industry, pyrotechnic material stabilizer for military industry, pencil lead for light industry, carbon brush for electrical industry, electrode for battery industry, catalyst for chemical fertilizer industry, etc. After deep processing, flake graphite can produce graphite emulsion, graphite sealing materials and composites, graphite products, graphite anti-wear additives and other high-tech products, becoming an important non-metallic mineral raw materials in various industrial sectors.
High purity graphite has the advantages of low resistance coefficient, high temperature resistance, corrosion resistance, oxidation resistance, good thermal shock resistance, electrical conductivity, small thermal expansion coefficient, self lubrication, easy precision machining and so on.
High temperature resistant: the melting point of graphite is 3850 ± 50 ℃, and the boiling point is 4250 ℃. Even if the graphite is burned by ultra-high temperature arc, the weight loss is very small, and the coefficient of thermal expansion is also very small. The strength of graphite increases with the increase of temperature. At 2000 ℃, the strength of graphite is doubled.
Conductivity and thermal conductivity: the conductivity of graphite is 100 times higher than that of ordinary non-metallic minerals. The thermal conductivity exceeds that of steel, iron, lead and other metal materials. The thermal conductivity decreases with the increase of temperature. Even at very high temperature, graphite becomes an insulator. Graphite can conduct electricity because each carbon atom in graphite only forms three covalent bonds with other carbon atoms, and each carbon atom still retains one free electron to transfer charge.
Lubricity: the lubricity of graphite depends on the size of graphite scale. The larger the scale is, the smaller the friction coefficient is, and the better the lubricity is.
Chemical stability: graphite has good chemical stability at room temperature, and can resist acid, alkali and organic solvent corrosion.
Plasticity: graphite has good toughness and can be rolled into thin sheets.
Thermal shock resistance: when graphite is used at room temperature, it can withstand the drastic change of temperature without damage. When the temperature changes suddenly, the volume of graphite changes little and there will be no cracks.