What is the purpose of graphite bushing?
First of all, graphite bushing is a tubular component made of high-purity graphite material, which has many unique physical properties and has become an important component in high-temperature, corrosive and precision industrial scenes.
In high-temperature environment applications (such as metallurgy/ceramics industry and single crystal silicon manufacturing), graphite bushing can withstand high temperatures of more than 3000℃ and has a low thermal expansion coefficient. It is often used as a conveying pipeline for molten metal and glass, or a protective sleeve for heating elements in high-temperature furnaces; it can also be used as a container for molten silicon materials in CZ single crystal furnaces.
In some highly corrosive scenes, such as chemical equipment and electrochemical fields, graphite bushings are often used as anti-corrosion linings for reactors and heat exchangers due to their excellent acid and alkali corrosion resistance, and as pipelines for conveying corrosive media; they can also be used as conductive corrosion electrode sleeves for electrolysis and electroplating tanks.
In the field of semiconductor and vacuum technology, such as semiconductor manufacturing and vacuum sintering furnaces. Graphite bushings are used as wafer carriers in diffusion furnaces and CVD equipment, which are resistant to high temperatures and avoid pollution; they can also be used as heating element support structures to ensure vacuum sealing at high temperatures.
In addition, graphite bushings can also be used in some scenarios that require rapid heat transfer, such as the temperature equalization component of lithium battery sintering furnaces.
