Graphite Rotor for Molten Aluminum Degassing
Product Overview
Jincheng graphite rotors are high-performance graphite components used in molten aluminum degassing and purification systems. These rotors inject and distribute inert gas (argon or nitrogen) into molten aluminum, effectively removing hydrogen and dissolved impurities to improve casting quality.
Our degassing rotors are manufactured from high-purity, fine-grain graphite with excellent corrosion resistance to molten aluminum and long service life. Various standard rotor designs are available, and custom shaft lengths and impeller geometries can be produced to match specific degassing equipment.
Key Features
- High purity graphite resists corrosion from molten aluminum and alloys
- Excellent mechanical strength at high temperatures for reliable rotation
- Precision machined impellers for optimal gas distribution and mixing
- Low gas bubble size for efficient hydrogen removal efficiency
- Long service life compared to ceramic and steel alternatives
- Available in various sizes to fit different degassing machines
- Custom shaft lengths for different furnace depths
- Consistent quality with batch-to-batch uniformity
Technical Specifications
| Parameter | Value |
|---|---|
| Material | Fine grain high purity graphite |
| Density | 1.75 - 1.85 g/cm3 |
| Shore Hardness | 65 - 75 HS |
| Flexural Strength | 40 - 55 MPa |
| Electrical Resistivity | 10 - 14 uOhm*m |
| Working Temperature | 700°C - 800°C (molten aluminum) |
| Shaft Diameter | 30 - 80 mm |
| Rotor Diameter | 100 - 250 mm |
| Shaft Length | Up to 2000 mm |
| Rotation Speed | 200 - 600 RPM |
Applications
- Aluminum casting foundries for degassing and hydrogen removal
- Aluminum die casting for improving casting quality and reducing porosity
- Aluminum alloy production for removing dissolved gases and inclusions
- Secondary aluminum recycling for purifying recycled aluminum melts
- Continuous casting for aluminum sheet, foil, and extrusion billets
- Automotive aluminum parts for high-strength and defect-free castings
Why Choose Jincheng Degassing Rotors?
- Specialized graphite grade optimized for molten aluminum contact
- Precision machined impellers for maximum degassing efficiency
- Longer service life compared to standard graphite rotors
- Various standard sizes compatible with major degassing machine brands
- Custom designs available for specific furnace and process requirements
- Competitive pricing as a direct manufacturer
- Fast delivery - common sizes in stock for quick shipment
- Technical support for rotor selection and process optimization
Frequently Asked Questions
Q1: What is the typical service life of a graphite degassing rotor?
A: Under normal operating conditions at 700-750°C, graphite rotors typically last 4-8 weeks of continuous use, depending on alloy type, rotation speed, and gas flow rate.
Q2: Can you make rotors for specific degassing machine brands?
A: Yes, we manufacture rotors compatible with most major degassing machine brands including Mainz, Pyrotek, and others. Please provide your machine model or existing rotor dimensions.
Q3: What is the difference between single-impeller and double-impeller rotors?
A: Double-impeller rotors provide better gas distribution and mixing for larger furnaces and higher throughput. Single-impeller rotors are suitable for smaller furnaces and batch processing.
Q4: How should rotors be installed and preheated?
A: Rotors should be preheated gradually above the molten metal surface before immersion to prevent thermal shock and extend service life. Proper alignment and regular inspection are also important.
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