What advantages does graphite material have over copper mold electrodes

What advantages does graphite material have over copper mold electrodes?

1. Choose graphite as an electrode material More than 90% of the electrode materials in Europe are graphite. Copper, which was once the dominant electrode material, has almost lost its advantages compared to graphite electrodes.

2. Reasons for using graphite as an electrode:

1. Faster processing speed: Under normal circumstances, the mechanical processing speed of graphite can be 2 to 5 times faster than that of copper; and the discharge processing speed is 2 to 3 times faster than that of copper;

2. The material is less likely to deform: It has obvious advantages in the processing of thin rib electrodes; the softening point of copper is around 1000 degrees, and it is easy to deform due to heat; the sublimation temperature of graphite is 3650 degrees; the thermal expansion coefficient is only 1/30 of that of copper.

3. Lighter weight: The density of graphite is only 1/5 of that of copper. When large electrodes are subjected to discharge processing, it can effectively reduce the burden of machine tools (EDM); it is more suitable for application on large molds.

4. Discharge consumption is smaller; since spark oil also contains C atoms, during discharge machining, the high temperature causes the C atoms in the spark oil to be decomposed, and then forms a protective film on the surface of the graphite electrode, compensating for the loss of the graphite electrode.

3. Supply and packaging:

Graphite electrode products can be processed according to drawings based on special customer needs, and the packaging is wooden box filling packaging and carton filling packaging (select according to the size of the graphite electrode, large graphite electrodes are packed in wooden boxes, and small graphite electrodes are packed in cartons.)