•The secret to cool bodies and glazes is alot of testing.
•The secret to know what to test is material and chemistry knowledge.
•The secret to learning from testing is documentation.
•The place to test, do the chemistry and document is an account at https://insight-live.com
•The place to get the knowledge is https://digitalfire.com
A brick capable of withstanding high temperatures without deforming. 'Insulating firebricks' have the additional advantage of acting as good insulators due to the large pockets of air in the matrix of the brick. There are many different kinds of firebricks available. Although they might appear similar, fire bricks are much more expensive than structural bricks and can withstand temperatures that would melt most common bricks. Firebrick types are categorized for their heat duty and the types of materials and atmospheres they must come into contact with. A wide variety of refractory shapes are also produced.
Users of firebricks look for technical specifications that include things like thermal expansion, thermal conductivity, resistance to spalling. Bricks are also classified according to chemical and material composition, method of manufacture and the application to which they will be put.
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By Tony Hansen