Telephone:13969763348
Telephone:13969763348
Ultra-high-power graphite electrode is a kind of graphite product, mainly made of petroleum coke and needle coke as raw materials, coal tar pitch as a binder, and made by calcining, batching, kneading, pressing, roasting, graphitization, and machining. A conductor that releases electric energy in the form of an electric arc to heat and melt the charge in an electric arc furnace. In order to help everyone further understand the ultra-high power graphite electrode, the properties of graphite will be explained.
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.
2. Electrical and thermal conductivity. The conductivity of 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 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.
3. Lubricity. The lubricating performance of 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 acid, alkali and organic solvent corrosion.
5. Plasticity. Graphite has good toughness and can be rolled into very thin flakes.
6. Thermal shock resistance. 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.
The above is an introduction to the properties of graphite. I hope this information can provide you with some help. Of course, as a graphite electrode manufacturer, our company mainly produces and sells various graphite electrodes, and can recommend and provide different types of graphite electrodes according to the needs of users. In addition, our company can also introduce graphite electrodes to you in detail and provide more relevant information by summarizing the understanding of graphite electrodes over the years.