Comprehensive protection of the metal jet from oxidation
23.05.2017
Plates SHPGT-450
SHPGT-450 plates are made of refractory fiber of mullite-siliceous composition, which is produced by melting aluminum and silicon oxides in an electric furnace with subsequent fiber formation by blowing.
To give the material strength, a clay binder is added to the fibers, the products are made by vacuum pressing, then fired.
SHPGT-450 slabs are a strong, easy-to-process structural insulating material that finds universal use in furnace construction. Plates are cut with a hacksaw, cut out the necessary shapes, glued with inorganic adhesives or fixed with metal fasteners.
When heated, possible linear and volume shrinkage are minimal.
Properties
- high heat resistance
- low density
- low thermal conductivity
- low heat capacity
- high chemical resistance
- structural strength
- small material shrinkage
- good workability
- good electrical insulating properties
- the material belongs to the non-combustible class
SHPGT-450 plates are chemically resistant to acids and alkalis. When used at high temperatures, the action of concentrated alkalis, hydrofluoric and phosphoric acids should be prevented.
Slabs are more resistant to temperature effects in oxidizing and neutral environments.
In a reducing environment, thermal insulation properties decrease.
Application
- insulation of the working space of thermal furnaces
- insulation of electric furnaces
- thermal insulation layers of thermal equipment
- insulating layers of air heaters
- insulation of gas ducts, pipes
- insulation of boilers, waste boilers
- construction of buildings, structures, boiler houses
- transport engineering, shipbuilding
- household appliances, heaters, gas heaters
- insulation of boilers, doors, dampers
Advantages
- thermal shock resistance
- stability at gas flow speeds up to 40 m/s
- reducing fuel consumption
- reducing consumption of ceramic refractories
- reducing the metal capacity of the lining structure
- quick and easy installation
- durability
- does not contain asbestos
Technical characteristics
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Density, kg/m3 |
450 |
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Application temperature is maximum, ° С |
1350 |
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Temperature of long-term use, °С |
1260 |
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Mass loss at 1000 °C, % |
0.3 |
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Bending strength limit, not less, N/mm 2 |
0.40 |
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Thermal conductivity at 600 °C, no more, W/(m K) |
0.28 |
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Heat capacity at 1000 °C, kJ/(kg K) |
1,047 |
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Chemical composition, % |
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AI2O3, not less |
40 |
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SiO2, no more |
45 |
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(AI2O3+SiO2), not less |
85 |
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Thermal conductivity of the material
|
Т, °С |
200 |
400 |
600 |
800 |
1000 |
1200 |
|
λ , W/(m K) |
0.15 |
0.17 |
0.20 |
0.24 |
0.30 |
0.43 |