Product Overview
Graphite connecting rods are high-performance linkage components manufactured from high-purity or isostatic graphite, specifically engineered for high-temperature, vacuum, and corrosive environments. With exceptional thermal resistance, low thermal expansion, and chemical stability, they are widely used in semiconductor equipment, photovoltaic manufacturing, vacuum heat treatment, and chemical processing systems for precision connections and force transmission under extreme conditions.
Key Features
✅ Ultra-High Temperature Resistance
Sustained operation at 2200°C in inert atmospheres, with peak tolerance up to 3000°C
✅ High Strength & Lightweight
Compressive strength ≥60MPa with density of only 1.7-1.85g/cm³ - 60% lighter than metal alternatives
✅ Exceptional Thermal Stability
Thermal expansion coefficient ≤5×10⁻⁶/℃ ensures dimensional integrity at elevated temperatures
✅ Chemical Corrosion Resistance
Withstands acids, alkalis, molten salts, and organic solvents for harsh environment applications
✅ Self-Lubricating Property
Friction coefficient ≤0.15 minimizes wear in moving assemblies
Technical Specifications
|
Parameter |
Standard Type |
Enhanced Type |
Conductive Type |
|
Material |
Isostatic Graphite |
Carbon Fiber Reinforced Graphite |
High-Purity Graphite (≥99.99%) |
|
Max Operating Temp |
2200°C (Inert) |
2400°C (Inert) |
1800°C (Inert) |
|
Compressive Strength |
60MPa |
100MPa |
50MPa |
|
Resistivity |
12-15μΩ·m |
8-10μΩ·m |
5-7μΩ·m |
|
Surface Treatment |
Uncoated/SiC Coated |
Multi-Layer Coating |
Metallized Coating |
Typical Applications
Semiconductor Equipment
Hot zone linkage rods for crystal pullers, drive shafts in epitaxial systems
Photovoltaic Manufacturing
Lifting linkages for ingot casting furnaces, wafer transfer mechanisms
Vacuum Heat Treatment
Door linkage rods for sintering furnaces, electrode connectors in brazing systems
Chemical Processing
Current-carrying rods for electrolytic cells, agitator shafts in reaction vessels
Product Series
Standard Connecting Rods
Diameter: Φ5-Φ150mm, Length: ≤3000mm
Custom-Shaped Linkages
Machinable with threads, keyways, flanges, and other complex features
Function-Integrated Models
Smart rods with built-in thermocouples/cooling channels
Quality Control
✔ Material Inspection: Ash content ≤100ppm
✔ Precision Machining: Straightness ≤0.1mm/m, diameter tolerance ±0.05mm
✔ Performance Testing:
High-temperature creep test (<0.5% deformation at 2000°C/100h)
Dynamic fatigue test (10⁶ load cycles without cracking)
Customization Services
Dimensional Customization: Non-standard sizes/shapes
Surface Enhancement: Anti-oxidation coatings, metallization
Functional Integration: Embedded sensors, cooling channels, quick-release structures
Usage Guidelines
⚠ Installation: Use graphite-specific tools to prevent metal contact
⚠ Oxidative Environments: Mandatory protective coating with periodic inspections
⚠ Maintenance: Regular surface checks; prohibit metal brushes during cleaning
Selection Support: Provide operational parameters (temperature/load/motion type) for optimized solutions
(Complementary products: Graphite bearings, graphite guides, graphite seals)