What are the advantages of graphite electrode materials?

Graphite electrode is a kind of graphite conductive material that can be used at high temperature. It has two product specifications: artificial and natural. Artificial graphite electrode is a kind of artificial graphite product processed through multiple processes with asphalt coke and petroleum coke as aggregates and coal tar pitch as binder. It has achieved good results in practical application. The advantages of graphite electrode materials are as follows: 

1. No burrs:

Copper electrode needs to be deburred manually after processing, in contrast, graphite has no burr after processing, which not only save a lot of cost and manpower, but also easier to realize automatic production;

2. Easy to grind:

It is easier to polish by hand in operation, because the cutting resistance of graphite is only 1/5 of that of copper;

3. Fast speed:

Graphite discharge rate is 2 to 3 times that of copper, and the raw material is not easy to deform. The softening point of copper is about 1000 degrees, which is very easy to be deformed by heat. The sublimation temperature of graphite is about 3650 degrees. In contrast, the thermal expansion coefficient of graphite is only 1/30 of that of copper;

4. Low cost:

In recent years, copper prices are rising, and graphite prices are lower than that of copper in all aspects; The same volume of graphite product price is 30-60% lower than copper. Relatively speaking, graphite price is stable and the short-term price fluctuation is small.

5. Light weight:

The density of graphite is only 1/5 of copper, which can effectively reduce the burden of machine tools and is more suitable for the large molds application in large electrode discharge machining;

6. Low loss:

Because the spark oil contains C atoms, a protective film is formed on the surface of graphite electrode after high temperature to compensate for the loss of graphite electrode. For more information about the performance of graphite electrode materials, feel free to contact us.