Product Overview
High-quality EDM (Electrical Discharge Machining) graphite blocks and rods are the preferred electrode material for mold making and precision EDM applications. With excellent machinability, high material removal rate, and fine surface finish capabilities, EDM graphite electrodes outperform copper electrodes in many mold and die making applications.
Key Features
- Excellent machinability - easy to mill and engrave complex shapes
- High material removal rate in EDM operations
- Low electrode wear for precision finishing
- Available in various grain sizes for different EDM finishes
- Lightweight compared to copper electrodes
- No deformation or bending during machining
- Wide range of block sizes and thicknesses
Technical Specifications
| Parameter | Unit | Standard Grade | Fine Grain Grade | Ultra-Fine Grade |
|---|---|---|---|---|
| Grain Size | μm | 10 - 15 | 5 - 10 | <5 |
| Bulk Density | g/cm³ | 1.75 | 1.80 | 1.85 |
| Shore Hardness | - | 60 | 65 | 75 |
| Flexural Strength | MPa | 35 | 45 | 55 |
| Electrical Resistivity | μΩ·m | 12 | 10 | 8 |
| Max Size | mm | 400x600 | 400x600 | 300x400 |
Applications
- Plastic injection mold making
- Die casting mold and die making
- Precision EDM sinking and machining
- Stamping and forming die manufacturing
- Automotive mold and tooling production
- Medical device mold manufacturing
- Jewelry and fine detail EDM work
Why Choose Jincheng EDM Graphite?
We supply EDM graphite blocks, rods, and custom-machined electrodes for mold shops and EDM service providers. Our EDM graphite is available in multiple grain sizes to match your finishing requirements, from roughing operations to mirror-finish EDM work. We offer standard block sizes as well as precision-cut blanks ready for your electrode machining.
FAQ
Q: What grain size EDM graphite should I choose?
A: Coarse grain graphite (10-15μm) is best for roughing with high material removal rates. Fine grain (5-10μm) provides a good balance for general mold work. Ultra-fine grain (<5μm) is required for mirror finish and fine detail applications. Our technical team can help you select the optimal grade.
Q: How does EDM graphite compare to copper electrodes?
A: Graphite electrodes machine 3-5 times faster than copper, weigh 1/5 as much, and have significantly lower electrode wear during finishing. Graphite is the industry standard for large and complex mold electrodes, while copper is still preferred for very small and fine detail work.
Q: Can you machine finished EDM electrodes to my drawings?
A: Yes, we offer full EDM electrode machining services. Send us your electrode drawings or 3D models, and we will produce finished, ready-to-use electrodes from the optimal graphite grade. This saves your shop time and ensures consistent electrode quality.
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