For glass tempering furnaces, inconsistent temperature distribution isn’t just an engineering challenge—it’s a $2M/year liability. Stress spots, energy waste, and production delays plague traditional insulation. With solutions that focus on energy efficiency in glass tempering, every micron of glass demands precision heating, and compromise isn’t an option.
Enter Hengrui Ceramic Fiber Roller Insulation Bricks: engineered to eliminate thermal gradients, slash energy costs, and deliver flawless tempered glass—batch after batch.
Precision Engineering for Extreme Environments
Glass tempering furnaces operate at a brutal 650-800°C 9, where conventional insulation crumbles, warps, or contaminates glass surfaces. Ceramic fiber roller bricks solve this with:
Zero contamination: High-purity alumina-silicate composition (Al₂O₃ >46%) prevents fiber shedding, critical for optical-grade glass surfaces .
Why Global Manufacturers Choose Hengrui’s Roller Bricks
✅ Eliminate Stress Spots & Breakage
Temperature fluctuations >±5°C cause uneven quenching—the root of stress marks and fractures. Hengrui’s bricks maintain horizontal temperature uniformity ±3°C across rollers by offering innovations in energy-efficient glass tempering:
- Blocking cold air intrusion at seals
- Absorbing roller expansion shocks
- Reflecting radiant heat via smooth, sintered surfaces 79
*Result: Fracture rates drop from 1.8% to 0.2%—saving €2M/year in rework* 9.
✅ Slash Energy Costs by 28%
Traditional insulation leaks heat through joints and low-density zones. Hengrui’s interlocking bricks:
- Reduce furnace skin temperature from 180°C→65°C
- Cut natural gas/electricity use by 15-28%
- Achieve 30-minute ramp-up to 650°C (vs. 60+ minutes) 19, further enhancing energy efficiency in glass tempering process
✅ Install & Forget Maintenance
- Precision dimensions (e.g., 300x300x250mm) enable seamless retrofitting
- No curing/drying—operational immediately after installation
- Withstands 1000+ thermal cycles without cracking—2-4x industry average 610
🌡️ Technical Superiority: By the Numbers
| Parameter | Hengrui Roller Bricks | Traditional Insulation |
|---|---|---|
| Thermal Conductivity | 0.08 W/m·K (400°C) | 0.15-0.21 W/m·K |
| Density | 280-350 kg/m³ | 180-220 kg/m³ |
| Max Operating Temp | 1430°C | 1100°C |
| Linear Shrinkage | ≤1% (1350°C/24h) | ≤-3% (1100°C/24h) |
| Lifespan | 5-7 years | 2-3 years |
*Data validated in Jujing SJQL-1700 furnaces 19*
🏭 Real-World Applications: Where Roller Bricks Dominate
- Roller Seals & End Caps: Prevents heat leakage at roller entry/exit points (critical in continuous furnaces) 7, essential for energy-efficient glass tempering.
- Thermal Breaks Between Zones: Custom-cut bricks isolate heating/cooling sections, eliminating cross-zone temp interference 79.
- Quench Chamber Shields: Withstands high-velocity air blasts during rapid cooling 9.
♻️ The Sustainability Dividend
For a mid-size tempering line processing 50 tons/month:
- Energy saved: 1.2 million kWh/year through intelligent glass tempering practices
- CO₂ reduction: 720 tons/year
- ROI: 8-12 months via lower gas/electric bills 19
