The brick type of refractory fire brick in the kiln should adapt to the lining of the kiln. If the type of fire resistance is too big, it is not convenient for construction. In addition, bricks are too large and are prone to cracks after heating stress impact. If it is too small, there are too many bricks between the bricks and the brick, and the gas is not strong. The connection materials that are prone to the brick seam for a long time will fall off, causing the brick body to fall off.
The size of the shape weight of a refractory fire brick
In general, the weight of 4-10kg of fire-resistant brick bricks is more appropriate. It is a moderate suppression of the pressure machine during the production process. The operator picks it up for convenience. In addition, it is more appropriate to install the kiln and the fire warming sintering during the sintering process. The refractory bricks below 3kg are too small. Both production and construction will increase the workload, and the brick seams will increase, and the use of gas in the furnace will be affected.
If the brick shape is large and the weight is large, it is not conducive to construction, and in the use of the brick body under the extreme heat and cold of frequent heating and cooling, thermal expansion and contraction will occur, and the internal thermal stress of the refractory brick is constantly changing. The extremely thermal heat of cooling will cause heat expansion and contraction, and the internal thermal stress of refractory bricks will continue to change. If the brick type is too large, it will not be released in a timely manner, and a slight crack will occur inside the refractory brick. Under the long -term stress of the bricks, the micro -cracks are continuously expanded and increased, and the bodies of cracked brick will falling off. If the break is continuously increased, a large -scale drop will be formed.
The range of the shape of refractory fire bricks
After determining the brick -shaped range of fire resistant bricks, it is also necessary to consider the hot earthquake problem of bricks. If the body density of fire resistant bricks is too high, there will be a poor heat shock. Proper body density and strength will be better. It can increase the excellent use performance of the refractory working layer in the furnace. At the same time as good heat resistance, it can also have a load of less kiln.
The appropriate brick shape and weight of the refractory brick, the thermal stress generated inside the working layer of the brick body, the pressure of the heating shock of the brick shape, can easily release it at the seam of the refractory brick masonry, cushion the concentration of the heat, reduce the concentration of heat, reduce the possibility of fracture brick cracks.
The right shape of refractory brick can reduce the possibility of brick breaks. In addition, the moderate brick shape can be changed to the mother -in -law to buckle bricks, so that the brick and the brick are tightly meshing. That increases the friction between the brick and the brick, and also reduces the phenomenon of the refueling brick working layer. If the phenomenon of broken bricks occurs, the broken brick cannot be slipped because of the tight mesh between the bricks and the bricks. The phenomenon of broken bricks will not occur, thereby it can have long service life in kiln lining.
