Graphite columns are commonly used in guide sleeves, guide columns, self-lubricating bearings, and wear-resistant plates. The combination of domestically produced graphite columns and self-produced wear-resistant plate technology has made outstanding contributions to the development of China's automotive industry, greatly improving the production efficiency of automobiles and reducing their costs.
The thermal conductivity and electrical conductivity of high-purity graphite columns are quite high, with a conductivity four times higher than stainless steel, two times higher than carbon steel, and 100 times higher than ordinary non-metallic materials. Its thermal conductivity not only exceeds that of metal materials such as steel, iron, and lead, but also decreases with increasing temperature, which is different from general metal materials. At extremely high temperatures, graphite even tends to be adiabatic. Therefore, the thermal insulation performance of graphite is very reliable under ultra-high temperature conditions.
Granular high-purity graphite columns have good lubricity and plasticity, and the friction coefficient of graphite is less than 0.1, which can be developed into breathable and transparent thin sheets. High strength graphite has a high hardness and is difficult to machine with diamond tools.
The graphite column mainly comes from the chips generated by graphite electrode processing and the waste generated by graphitization process, so there are some waste graphite blocks. Graphite chips have the characteristics of conductivity, thermal conductivity, high temperature resistance, low ash content, high carbon content, and good chemical stability. They are widely used as carbon additives in steelmaking furnaces, reducing agents in chemical industries, and an important raw material for producing carbon blocks for aluminum.
