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The Thermal Expansion Of High Alumina Bricks?
Sep 13, 2018

The thermal expansion of a high alumina brick refers to the physical property that its volume or length increases as the temperature increases. The thermal expansion of high alumina bricks can be expressed by the coefficient of linear expansion and the coefficient of linear expansion, or by the coefficient of bulk expansion and the coefficient of bulk expansion. The coefficient of linear expansion refers to the relative rate of change (%) of the length of the sample from room temperature to the test temperature. The coefficient of linear expansion refers to the relative rate of change of the length of the sample for each 1 ° C increase from room temperature to the test temperature.

The thermal expansion of high alumina bricks shall be determined in accordance with the national standard GB/T 7320-2008.

The thermal expansion of high alumina bricks depends on their chemical composition, mineral composition and microstructure, and also varies with temperature range.

The thermal expansion of high-aluminum bricks has a direct impact on its thermal shock resistance and volume stability, and is one of the important properties that should be considered when producing (making a firing system) and using high-aluminum bricks.


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