product description

Graphite blocks for EDM are often used as core tool electrodes, which are specifically reflected in the following points:
1. Discharge removal of materials: Graphite blocks can generate high temperatures through pulse discharge, directly vaporize the workpiece surface, and achieve precision machining, which is especially suitable for high-hardness metals.
2. High machining efficiency: Graphite blocks are resistant to high temperatures and have fast thermal conductivity, allowing high-current high-speed machining, which is more than 30% higher than copper electrodes and is suitable for rough machining.
3. Low electrode loss: The thermal expansion coefficient of graphite blocks is only 1/4 of that of copper, and it has strong high-temperature stability. The loss rate can be controlled below 1% during complex shape machining, extending the electrode life.
4. Easy machining: Graphite blocks have low density and moderate hardness. The CNC machining speed is 3-5 times faster than copper, and can quickly make thin-walled, sharp-angled and other precision structures.
5. Cost advantage: Compared with copper electrodes, graphite blocks have lower material costs and can be reused through splicing technology to reduce the manufacturing cost of complex molds.

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