Refractory Supported
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Refractory Supported
Heater Type AX-200
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GENERAL INFORMATION These rugged heaters feature self-supporting construction and are precision fabricated for long heater life. The metallic heating element is carefully prepared prior to being cast into the refractory to ensure uniform heat over the complete surface of the unit. The base refractory has outstanding abrasion resistance and is ideal for applications where the heating element might be subject to mechanical damage or being splashed with molten metals. The high thermal mass of the heater minimizes fast thermal changes as can be experienced with low density fiber insulated heaters. They are immune from damage from electrical shorting due to contact with materials being heated. AX-200 precision fabricated high temperature heaters will produce uniform, reliable heat to 1100ºC (2012ºF). They are 100% organic free and will not smoke or outgas when heated. |
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CHARACTERISTICS & PROPERTIES |
| Heating Element Type | Fe-Cr-Al Alloy |
| Refractory Support | |
| Density, (nominal) g/cc (pcf) |
1.92 (120) |
| Nominal Composition, wt.% | |
| Al2O3 | 47 |
| SiO2 | 40 |
| CaO | 8.5 |
| TiO2 + other | <4.5 |
| Maximum Use Temp.*, °C (°F) | 1300 (2400) |
| Porosity, % fired | 2 |
| Crushing Strength, MPa(psi) at 816°C (1500°F) | 27.6 (4000) |
| Thermal Conductivity, W/m°K (BTU/hr ft² °F/in) | |
| 538°C (1000°F) | 0.86 (6.0) |
| 1100°C (2012°F) | 0.90 (6.3) |
| Modulus of Rupture, MPa(psi) @ 816°C (1500°F) | 4.1 (600) |
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SUGGESTED
APPLICATIONS
Heating source in furnaces and
industrial process equipment operating to 1100ºC (2012ºF). High temperature hot plate
heating element. Molten metal splash resistant
heating source for launders, troughs and distribution boxes. |
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AVAILABILITY ZIRCAR AX-200 Refractory
supported heating elements are produced on a custom basis. Typically they
are manufactured to customer specification, but ZIRCAR can design and
construct units to satisfy a range of heating needs.
Custom heaters, shapes and
preparations are available on request. Please contact us with your
special requirements. We are pleased to contact
you if you would like more information or want to discuss custom
product availability and pricing. To Order Custom heaters: specify
quantity and description (by supplying drawings, sketches, written
descriptions or material specifications). |
Copyright © 2001 ZIRCAR Ceramics, Inc.
ZIRCAR Refractory Supported Heater Type AX-200 consists of high temperature,
helically-wound, iron-chrome-aluminum metallic alloy resistance heating
elements fully embedded in a strong, highly stable, high
temperature refractory body. They are available in watt densities up to 4000
w/ft² for use to 1100ºC (2012ºF).
