Alumina Ceramic Roller
High purity Alumina Rollers fulfill different requirements for thermal shock resistance, chemical corrosion resistance, melt and slag corrosion resistance, mechanical stability and gas permeability.
Honsin Ceramic Roll® Series-Alumina Ceramic Roller solution is used as the refractory & support & transport material installed into the roller kiln / automotive furnace for high temperature heating processing A broad range of sizes and shapes are available.
Technical properties
| Item | Unit | HS75 | HS80 | HS85 | HS95 |
| AL2O3 Content | % | ≥75 | ≥80 | ≥85 | ≥95 |
| Max. Service Temperature | ℃ | 1280 | 1350 | 1450 | 1800 |
| Bulk density | g/cm3 | 2.6 | 2.8 | 3.4 | 3.7 |
| Apparent porosity | % | ≤20 | ≤15 | ≤12 | ≤8 |
| Rate of Water Absorption | % | ≤9 | ≤8.5 | ≤7.5 | ≤4 |
| Bending Strength | MPa | 60 (20℃) 45 (1200℃) | 70 (20℃) 51 (1200℃) | 80 (20℃) 58 (1200℃) | 100 (20℃) 85 (1200℃) |
| Coefficient of thermal expansion (20℃ to 1000℃) | K-1 ×10-6 | 6 | 6 | 6 | 8 |
| Thermal Shock Resistance (1350℃ to 20℃) | / | Excellent | Excellent | Excellent | Excellent |
| roundness | mm | ≤ 0.2 | ≤ 0.2 | ≤ 0.2 | ≤ 0.2 |