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Fire bricks themselves
- Aug 21, 2018 -

1. Chemical composition: the main components determine the quality and characteristics of the refractory

2. Volume density: high density per unit volume weight indicates good density, high strength, but high thermal conductivity

3. Visible porosity: no specific requirements are made, but the manufacturer must strictly control visible porosity.

4. Load-softening temperature: also called high-temperature load-starting deformation temperature, this parameter is very important, indicating the material's resistance to high temperature

5. Thermal shock resistance: the ability to resist rapid changes in temperature without being damaged

6. Compressive strength: maximum pressure capacity under (normal temperature)

7. Flexural strength: ability to withstand shear stress

8. Linear rate of change: also called heavy burn line change or residual line change, refers to the change of volume expansion and contraction every time with the same temperature change. If every expansion and contraction is the same, we define such linear rate of change as 0