EDM Graphite Rod for Electrical Discharge Machining
Product Overview
Jincheng EDM graphite rods are high-performance graphite electrodes specifically designed for electrical discharge machining (EDM) applications. With fine grain structure and uniform material properties, these graphite rods provide excellent machining accuracy and efficient material removal for mold making and precision component manufacturing.
Our EDM graphite electrodes are available in various grades and sizes, from fine-grain high-precision electrodes for finish machining to coarse-grain electrodes for roughing operations. Custom diameters and lengths can be produced to meet specific EDM machine requirements.
Key Features
- Fine uniform grain structure for superior surface finish and machining accuracy
- Excellent material removal rate for efficient EDM performance
- Low electrode wear rate extends electrode life and reduces cost per part
- High machinability - easy to machine into complex shapes and geometries
- Lightweight compared to copper electrodes, easier to handle and set up
- No deburring required after EDM machining, reducing post-processing time
- Available in multiple grades for different finish and speed requirements
- Precision tolerances with diameter accuracy up to ±0.02mm
Technical Specifications
| Parameter | Value |
|---|---|
| Material Grade | Fine grain EDM graphite |
| Grain Size | 5 - 20 microns |
| Density | 1.75 - 1.88 g/cm3 |
| Shore Hardness | 60 - 75 HS |
| Flexural Strength | 40 - 60 MPa |
| Electrical Resistivity | 8 - 13 uOhm*m |
| Diameter Range | 3 - 100 mm |
| Length Range | 100 - 500 mm |
| Diameter Tolerance | ±0.02 - ±0.05 mm |
| Straightness | < 0.1 mm/100mm |
Applications
- Precision mold making for injection molds, die-casting molds, and forging dies
- EDM sinking for complex cavity and detail machining
- Automotive industry for mold and tooling manufacturing
- Aerospace components for precision engine and turbine parts
- Medical device manufacturing for surgical instruments and implants
- Electronic connector molds for high-precision plastic components
Why Choose Jincheng EDM Graphite Rods?
- Multiple EDM grades available - from roughing to ultra-fine finish grades
- Precision machining with tight diameter and straightness tolerances
- Consistent quality with batch-to-batch material property uniformity
- Competitive pricing compared to imported EDM graphite brands
- Custom sizes and shapes - we can produce electrodes to your drawings
- Technical support to help select the right grade for your application
- Fast delivery - standard diameters in stock for quick shipment
- Global supply serving EDM shops and mold makers worldwide
Frequently Asked Questions
Q1: What is the difference between fine grain and coarse grain EDM graphite?
A: Fine grain graphite (5-10 microns) provides better surface finish and accuracy for finish machining. Coarse grain graphite (20-30 microns) offers faster material removal and lower cost for roughing operations.
Q2: How does graphite compare to copper as an EDM electrode material?
A: Graphite is lighter, easier to machine, has faster material removal rate, and lower electrode wear compared to copper. It is especially preferred for large and complex molds.
Q3: What diameter and length options are available?
A: Standard diameters range from 3mm to 100mm, and standard lengths are 100mm, 200mm, 300mm, and 500mm. Custom sizes are available on request.
Q4: Do you offer pre-machined custom electrodes?
A: Yes, we can machine graphite electrodes to your exact drawings and specifications, ready for immediate use on your EDM machine.
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