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FHL-VACTM Free Radiating Cylindrical Insulation Segment With Heating System
FHL-VACTM Free Radiating Cylindrical Insulation
Segments are another special type of panels where heating element is hung at
the surface of insulating module which radiate thermal energy into the
required chamber, meanwhile ceramic panel resist energy loss to atmosphere.
We manufacture the following product in various size and grade to meet our
customer needs.
Custom Built Board Dimensions:
• Thickness: 90, 100, 125mm
• From ID: 150mm up to Customer Requirement
• We work for your exacting requirements
Type of Heater Used:
• FHL - Single Core ROB Heaters
• FHL - Multicore ROB Heaters
• FHL - SOB Heaters
Application:
• Pit Furnace
• Bell Furnace
• Split Furnace
Technical Data of FHL-VAC ™ Vacuum Formed Ceramic Fiber Modules & Panels
| Parameter | FHL-M 1150 | FHL-Z 1325 | FHL- HT 1550 |
|---|---|---|---|
| Classification Temp (°C) | 1260 | 1425 | 1650 |
| Max. Continuous Working Temp. (°C) | 1150 | 1325 | 1550 |
| Density Range (Kg/m3) | 200-240 | 200-240 | 200-240 |
| Linear Shrinkage (%) (24 Hour Continuous Working Temp.) | 1< | 1< | 1< |
Thermal Conductivity (W/mK)
| Parameter | FHL-M 1150 | FHL-Z 1325 | FHL- HT 1550 |
|---|---|---|---|
| At 200°C | 0.065 | 0.065 | 0.065 |
| At 600°C | 0.13 | 0.13 | 0.14 |
| At 1000°C | 0.27 | 0.28 | 0.24 |
| At 1200°C | 0.40 | 0.38 | 0.33 |
| At 1300°C | 0.48 | 0.47 | 0.39 |
| At 1400°C | - | 0.53 | 0.45 |
| At 1500°C | - | - | 0.51 |
| At 1600°C | - | - | - |
Chemical Composition (%)
| Parameter | FHL-M 1150 | FHL-Z 1325 | FHL- HT 1550 |
|---|---|---|---|
| Al2O3 | 47 | 37.5 | 66 |
| SiO2 | 53 | 49.5 | 33 |
| Zr | - | 13 | - |
Technical Data Sheet of FHL-Heating Alloys
| Fe-Cr-Al Heating Element Alloy 1 Alloy 2 |
Ni-Cr 80 Heating Element | ||
|---|---|---|---|
| Standard Chemical Composition (%) | Al 6.0 | Al 6.0 | Cr 19-21 |
| Cr 23 | Cr 23 | Fe < 1 | |
| Fe 71 | Fe 70 | Ni 77 or more | |
| Other Elements in Small Quantity | |||
| Max. Duty Temp. of Heating Element (°C) | 1400 | 1420 | 1100 |
| Electric Resistivity (Ω mm2 m-1) | 1.45 ± 5% | 1.45 ± 5% | 1.08 ± 5% |
| Expansion from Thermal Factor | 15.1 x 10-6 | 14.8 x 10-6 | 17.6 x 10-6 |
| Hardness Hv Melting Point (°C) |
200-240 1500 |
200-240 1500 |
200-190 1500 |
| Electric Resistance Temp. Coefficient | 33 x 10-6 | 15 x 10-6 | 58 x 10-6 |
| Increase from Oxidation 1200°C (mg/cm2h) | 0.05 | 0.05 | 0.25 or less |
| Tensile Strength MPa (Kgf/mm2) |
650-900 (65-90) |
650-900 (65-90) |
700-900 (70-90) |
| Specific Gravity Elongation (%) |
7.1 15-25 |
7.1 15-25 |
8.4 20 or more |