The single-hole ceramic beam is a high-performance ceramic structural component specifically designed for high-temperature industrial kilns, chemical processing equipment, and packing support systems. Manufactured primarily from alumina (Al₂O₃) or silicon carbide (SiC), its unique single-hole structure optimizes gas flow while maintaining exceptional mechanical strength and corrosion resistance, making it ideal for extreme high-temperature, high-pressure, and corrosive environments.
Applications
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Industrial Kilns: Load-bearing supports for tunnel kilns and roller hearth kilns (withstands up to 1600°C)
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Chemical Processing: Packing support structures for sulfuric acid towers and absorption towers (acid-resistant)
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Semiconductor Manufacturing: Load-bearing components for high-temperature heat treatment equipment
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Environmental Engineering: Wear-resistant support components for desulfurization and dust removal systems
Advantages
✅ High-Temperature Resistance (Alumina: 1600°C, SiC: 1800°C)
✅ Exceptional Mechanical Strength (Flexural strength ≥250MPa, SiC version superior)
✅ Chemical Corrosion Resistance (Resists acids, alkalis, and oxidizing media)
✅ Lightweight Design (Density 2.3-3.2g/cm³, reduces kiln load)
✅ Extended Service Life (5-10 times more durable than metal beams)
Technical Specifications
| Parameter | Alumina Type | Silicon Carbide Type |
| Material | Al₂O₃ (≥75%) | SiC (Reaction-Bonded) |
| Max Temp | 1600°C | 1800°C |
| Flex Strength | ≥120MPa | ≥250MPa |
| Density | 2.8-3.2g/cm³ | 3.02-3.2g/cm³ |
| CTE | 7-8×10⁻⁶/°C | 4.5×10⁻⁶/°C |
| Open Area | 55%-60% | 50%-58% |
Manufacturing Process
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Material Preparation: High-purity alumina/SiC powder + sintering aids
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Forming: Uniaxial/isostatic pressing for single-hole structure
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Sintering: High-temperature densification (Al₂O₃:1600°C/SiC:2000°C)
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Machining: CNC precision grinding (±0.5mm tolerance)
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QC Inspection: Ultrasonic testing + mechanical strength verification
Installation & Usage
⚠️ Installation: Use elastic gaskets to accommodate thermal expansion
⚠️ Heating Rate: ≤5°C/min to prevent thermal shock cracking
⚠️ Load Limit: Never exceed design capacity (SiC type ≤280MPa)
⚠️ Maintenance: Regularly remove surface carbon deposits/scale
After-Sales Service
FAQ
Q: Benefits of single-hole design?
A: Optimizes gas distribution, reduces pressure drop, and improves heat transfer efficiency.
Q: Suitable for reducing atmospheres?
A: SiC version compatible; alumina type requires protective coating.
Q: Minimum bending radius?
A: Typically ≥1/100 of span length (e.g., 20mm for 2m beam).
