What is the difference between refractory material and refractory fiber?
How is the refractoriness of aluminum silicate ceramic fiber defined?
What is the difference between the classification temperature and the working temperature of the aluminum silicate blanket?
There are many temperature concepts in the design of aluminum silicate ceramic fiber insulation materials, which are easy to be confused. The following concepts and terms are specially organized to understand and distinguish:
1. Refractory materials
Inorganic non-metallic materials with a refractoriness greater than 1580°C.
2. Refractory fiber
The general term for fibrous insulation materials with a refractoriness greater than 1580°C.
3. Melting point
The temperature at which the liquid and solid phases inside the material are in equilibrium.
4. Refractoriness
The temperature at which a material reaches a certain degree of softening under the action of high temperature. It represents the ability of a material to resist high temperatures without being melted.
5. Classification temperature
It is also called the limit temperature, which refers to the limit temperature at which the refractory fiber can be used for a short time at this temperature.
Judgment basis: the refractory fiber is kept at the classified temperature for 24 hours, and the heating wire shrinks less than 4%.
6. Working temperature
Also known as the long-term use temperature, it refers to the limit temperature at which the refractory fiber can be used safely for a long time at this temperature.
Judgment basis: the refractory fiber is kept at the working temperature for 24 hours, and the heating wire shrinks less than 3%.
