Прочность кирпичей

The strength of sintered bricks is of concern to major construction units, and there are many technical measures to improve the strength of sintered bricks. Below are a few brief introductions:

1. Increase the molding pressure of the brick machine

The increase in molding pressure of the brick machine leads to an increase in the density of the bricks. Only by increasing the density of the adobe. Only by increasing the density of the adobe can high-strength sintered bricks be fired. Practice has shown that bricks with a molding pressure of (2.2-2.3) MPa generally have a compressive strength of (13.9-15) MPa when fired, while bricks with a molding pressure of 3 MPa can easily reach a compressive strength of 20 MPa when fired.

2. Appropriately increasing the temperature of sintered bricks

The strength of bricks produced by the same raw materials and brick machines varies depending on the roasting temperature. Результаты испытаний свидетельствуют о том, что прочность кирпича на сжатие увеличивается с увеличением температуры обжига в туннельной печи..

3. Продлите время изоляции соответствующим образом.

То же сырье для спеченного кирпича, та же кирпичная машина, одинаковая скорость нагрева и охлаждения, температура спекания - это все 900 ℃, и время изоляции разное, так что прочность на сжатие спеченного кирпича тоже разная. Соответствующее время изоляции полезно для улучшения прочности на сжатие и качества спеченного кирпича..

4. Recommend using low-temperature long burning

Настоящее время, sintered bricks are commonly mixed with internal combustion, и “high-temperature short firing” is often used to increase production. Practice has proven that using the “high-temperature short burning” firing method for internal combustion conversion can increase production, but it has a certain impact on product quality. Products often have defects such as black centers, black scars, cracks, and embossing, and their compressive strength is also reduced. More importantly, it increases coal consumption, wastes energy, and is detrimental to protecting the ecological environment. Следовательно, it is recommended to adopt the method of “low-temperature and long-term burning”. Using the low-temperature long burning method, under the condition of internal combustion of about 80%, the temperature range from (650 к 900) ℃ should not be less than 6 часы; The interval from 900 ℃ to the end of product sintering should not be less than 6 часы. Таким образом, it takes a total of 12 hours for the internal combustion at the center of the billet to fully burn, playing a role in fully utilizing all thermal energy.