Graphite Electrode for Spark Plasma Sintering
Product Overview
Jincheng SPS graphite electrodes are high-performance graphite components specifically designed for Spark Plasma Sintering (SPS) and Field Assisted Sintering Technology (FAST). These electrodes provide precise pressure transmission and efficient pulse current delivery for rapid densification of advanced materials.
Our SPS tooling set includes upper and lower electrodes, dies, and core rods, all manufactured from high-purity fine-grain graphite with excellent electrical and thermal conductivity. Custom sizes are available to match various SPS machine models and sample dimensions.
Key Features
- High purity fine grain graphite for excellent electrical conductivity
- High mechanical strength at elevated temperatures for pressure transmission
- Uniform density ensures consistent electrical and thermal performance
- Precision machined with tight tolerances for perfect die fit
- Excellent thermal shock resistance withstands rapid heating rates
- Available in various grades for different SPS applications and budgets
- Complete tooling sets including electrodes, dies, and core rods
- Custom sizes to fit various SPS machine chambers
Technical Specifications
| Parameter | Value |
|---|---|
| Material | Fine grain high purity graphite |
| Grain Size | 5 - 15 microns |
| Density | 1.75 - 1.88 g/cm3 |
| Shore Hardness | 60 - 75 HS |
| Flexural Strength | 40 - 60 MPa |
| Electrical Resistivity | 8 - 12 uOhm*m |
| Thermal Conductivity | 120 - 150 W/(m*K) |
| Max Temperature | 2200°C (typical SPS range) |
| Electrode Diameter | 20 - 100 mm |
| Electrode Length | 50 - 200 mm |
Applications
- Spark Plasma Sintering (SPS) for advanced ceramic materials
- Field Assisted Sintering Technology (FAST) research and production
- Powder metallurgy for rapid densification of metals and alloys
- Functional materials research for thermoelectrics, superconductors, and composites
- Diamond and cBN tool manufacturing for high-pressure high-temperature processes
- University and national labs for materials science research
Why Choose Jincheng SPS Tooling?
- Specialized graphite grades optimized for SPS and FAST applications
- Precision manufacturing with tight dimensional tolerances
- Complete tooling sets - electrodes, dies, and core rods all available
- Compatible with major SPS machines including Dr. Sinter, FCT, and others
- Custom sizes available for unique sample geometries and research needs
- Cost-effective alternative to imported SPS tooling
- Fast delivery - standard sizes in stock, custom within 1-2 weeks
- Global shipping to universities, research institutes, and material companies
Frequently Asked Questions
Q1: What graphite grade is recommended for SPS applications?
A: Fine-grain isostatic graphite with density 1.80-1.85 g/cm3 is typically recommended for SPS. We can recommend the optimal grade based on your temperature, pressure, and material requirements.
Q2: How long do SPS graphite electrodes last?
A: Electrode life depends on temperature, pressure, and atmosphere. Typical SPS electrodes last 50-200 cycles before needing replacement. Proper alignment and uniform pressure distribution extend tooling life.
Q3: Can you manufacture custom die cavities?
A: Yes, we can machine custom die cavities for special sample shapes including rectangular, square, and non-standard geometries. Please provide your sample dimensions and requirements.
Q4: Do you provide tooling for specific SPS machine models?
A: Yes, we manufacture tooling compatible with most major SPS machine brands. Please specify your machine model when ordering, or provide dimensions of your existing tooling.
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