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Chrome corundum brick is a commonly used high-temperature refractory material, but it is prone to thermal shock cracks at high temperatures, which affects its service life. The following are several ways to improve the thermal shock stability of chrome corundum bricks:
Optimizing the formula: adjusting the raw material ratio and particle size distribution of chrome corundum bricks, selecting suitable binders and additives, and optimizing the formula can improve the structure and performance of chrome corundum bricks and improve their thermal shock stability.
Adding micro powder: Adding a certain proportion of micro powder to chrome corundum bricks, such as microcrystalline oxide, micron silicon powder, etc., can change the microstructure and porosity of chrome corundum bricks and increase their thermal shock stability.
Adopt permeable structure: Apply permeable structure to the production of chrome corundum bricks, that is, spray or impregnate certain materials on the surface of chrome corundum bricks to penetrate into the inside of the brick body, thereby forming a certain permeable layer and increasing its thermal shock stability sex.
Composite structure: In the production of chrome corundum bricks, a composite structure is adopted, that is, the surface of chrome corundum bricks is covered with a layer of other high-temperature refractory materials, such as alumina ceramics, which can effectively reduce thermal shock cracks of chrome corundum bricks and improve their thermal performance. shock stability.
Control the firing process: firing is one of the important factors affecting the performance of chrome corundum bricks. Controlling the firing process, including temperature, time, atmosphere, and other factors, can effectively improve the thermal shock stability of chrome corundum bricks.
It is necessary to choose a suitable method to improve the thermal shock stability of chrome corundum bricks according to the specific situation.
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