Over time, the development of different materials for intensive processes such as use in a blast furnace or an electrical arc furnace, or use in other industries, has allowed for better quality and reliability of these materials.
This is certainly the case for graphite rods, which can be provided in a variety of diameters to be used in many applications. To understand the different types of graphite and the benefits of this material for specific applications, it is helpful to take a look at the basics.
Graphite Types
Today it is possible to choose natural or synthetic graphite. Natural graphite is mined around the world with the largest producers being China, Canada, Brazil, Mexico and in the Ukraine. It is a crystalline form of carbon and is considered a semi-metal in the natural form. This natural graphite issued for refractory material as well as in batteries, lubricants and other items such as brake linings.
The second type of graphite and the one most commonly found in graphite rods is synthetic graphite. This is made through exposing amorphous carbon to high temperatures and several processes. The ingredients used can include coal, petroleum or other types of materials.
The Advantages
The use of synthetic graphite rods offers several benefits. These include factors such as:
Very high melting points determined by the specific formulation of the rod
Good thermal conductivity
High strength at high temperatures that results in better life cycles and less risk of component failure
Good thermal shock resistance
Excellent ability to act as an electrical conductor
Low rates of thermal expansion
High levels of chemical resistance.
While synthetic graphite is a multi-step process, the results are a superior product that is uniquely able to work effectively in some of the most extreme operating conditions in any industrial application.
