What are the advantages of high-purity graphite products

High-purity graphite is specially processed graphite, which has the characteristics of corrosion resistance, good thermal conductivity, and low permeability. Several advantages of high-purity graphite products:
1. High temperature resistance: The melting point of graphite is 3850±50°C and the boiling point is 4250°C. Even if burned by ultra-high temperature arc, the weight loss is very small, and the thermal expansion coefficient is also very small. The strength of graphite increases with the increase of temperature. At 2000°C, the strength of graphite doubles. The temperature of the chemical reaction that ignites the exothermic flux during the exothermic welding construction is very high, so the material used in the exothermic welding mold needs to be resistant to high temperatures.
2. Electrical conductivity and thermal conductivity: The electrical conductivity of high-purity graphite is one hundred times higher than that of general non-metallic minerals. The thermal conductivity exceeds that of metal materials such as steel, iron, and lead. Thermal conductivity decreases with increasing temperature, even at extremely high temperatures, graphite becomes an insulator. Graphite can conduct electricity because each carbon atom in graphite only forms 3 covalent bonds with other carbon atoms, and each carbon atom still retains 1 free electron to transfer charge. In the exothermic welding construction, it is often necessary to weld a lot of points, and the amount of construction is not small. The thermal conductivity of graphite can meet this point. It can withstand high temperatures and can quickly cool down.
3. Lubricity: The lubricating performance of high-purity graphite graphite depends on the size of the graphite flakes. The larger the flakes, the smaller the friction coefficient and the better the lubricating performance.
4. Chemical stability: Graphite has good chemical stability at room temperature, and is resistant to acids, alkalis and organic solvents.
5. Plasticity: High-purity graphite has good toughness and can be rolled into very thin flakes. Exothermic welding sometimes requires exothermic welding molds of various joint forms. The plasticity of high-purity graphite can be manufactured into exothermic welding molds of different models, specifications, and connection forms.
6. Thermal shock resistance: High-purity graphite can withstand drastic changes in temperature without being damaged when used at room temperature. When the temperature changes suddenly, the volume of graphite will not change much and no cracks will occur.