Steel Fiber Reinforced Wear-resistant High Alumina Brick

Steel fiber reinforced wear-resistant high alumina bricks Add steel fiber reinforced steel fiber reinforced wear-resistant high alumina bricks properties

The addition of steel fiber can significantly increase the flexural strength of steel fiber-reinforced wear-resistant high-alumina bricks and improve thermal shock resistance, impact performance and wear resistance. Adding 1% steel fiber to steel fiber reinforced wear-resistant high alumina bricks can increase the post-fired flexural strength by 40% to 120%. Adding 1% steel fiber to steel fiber reinforced wear-resistant high alumina bricks, 10 hot and cold cycles The final flexural strength loss is only 10% to 30%, while the flexural strength loss of the same material without steel fibers reaches 40% to 60%. The lower the flexural strength loss rate, the better the thermal shock resistance. Steel fibers can inhibit the growth of cracks caused by thermal stress. Moreover, the fine cracks formed by the difference in thermal expansion coefficient between the steel fiber reinforced wear-resistant high alumina brick matrix and the steel fiber can also offset the energy of large crack expansion caused by thermal stress. Of course, at different operating temperatures, appropriate steel fiber including addition amount should be selected.

Steel fiber reinforced wear-resistant high-alumina bricks are made of corundum and special-grade alumina as the main raw materials, adding an appropriate amount of heat-resistant stainless steel fiber, and are made by high-pressure molding and medium-temperature heat treatment. They are mainly used in the front and rear kiln mouths, coolers, kiln linings and other parts of small and medium-sized rotary kilns. The use effect is better than phosphate-bonded high-alumina bricks and steel fiber castables.