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Pingdingshan Wanhui Graphite Co., Ltd.
Pingdingshan Wanhui Graphite Co., Ltd.

Characteristics of High Purity Graphite

Introduction to high purity graphite

High purity graphite refers to graphite with a carbon content greater than 99.99%. It is widely used in the metallurgical industry as advanced refractory materials and coatings, military industry as stabilizers for pyrotechnic materials, light industry as pencil cores, electrical industry as carbon brushes, battery industry as electrodes, and fertilizer industry as catalysts. It is also used for processing and manufacturing electric heating elements, structural casting molds, crucibles and boats for smelting high purity metals, heaters for single crystal furnaces, graphite for electrical discharge machining, sintered molds, anodes for electron tubes, metal plating, graphite crucibles for semiconductor technology, anodes for electron tubes, gates and other applications. The high purity graphite block refers to block-like high purity graphite. There are two forms of high purity graphite: powder and block. The powder form is called high purity graphite block, and the block form is called high purity graphite powder.

What are the characteristics of high purity graphite?

The performance of high purity graphite is quite outstanding, such as high temperature resistance, corrosion resistance and other characteristics, making it widely used in metallurgy, chemical industry, electrical discharge machining, semiconductor, electronics and other industries. Very few materials can match the high temperature resistance of high purity graphite. The melting point of graphite is 3850 degrees, and the boiling point is 4200 degrees, making it very resistant to high temperatures. Another characteristic is corrosion resistance. high purity graphite is exceptionally resistant to acid and alkali corrosion, so it is widely used in the chemical industry, with many graphite chemical equipment, such as graphite heat exchangers, graphite condensers, graphite cooling towers, and so on. It can be said that high purity graphite has made an indelible contribution to the development of the chemical industry.

High purity graphite has many other good characteristics, such as a small coefficient of thermal expansion. In other words, at high temperatures, its volume changes very little, which makes it suitable for precision mechanical parts. Why is that? Because precision mechanical parts have extremely demanding requirements on materials: regardless of whether it is at high temperatures or in extremely cold conditions, your volume cannot change. This is exactly the strong point of high purity graphite. In addition, graphite also has self-lubricating properties. Do you remember when the zipper on your clothes didn't work, how did you fix it? Just apply some graphite from a pencil to lubricate it, and it will work much better. That's graphite. Therefore, the self-lubricating property of high purity graphite also has a wide range of applications. For example, it can be made into self-lubricating bearings, which do not need oil lubrication, reducing oil pollution and making it more convenient for precise use.