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There is tear crack on the strip surface of solid brick
The crack is very similar to the above-mentioned top surface tear, but the location is on the strip surface of the brick, the top surface is intact, and it is also a waste product. The reason for this defect is that the roller on the mud bed for transporting the mud strips is uneven, or some of the rollers are covered with mud blocks, so that the mud strips move forward in a wave shape, bending out internal injuries until they are exposed after drying and sintering, which is hopeless. Therefore, we must pay close attention to the walking condition of the mud strip. We must move forward smoothly and straight. We must not swing from side to side or jump up and down. Otherwise, we should stop the machine immediately to find out the cause and eliminate the fault before resuming production.
02
2024
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07
Tearing on top of solid brick
There is an irregular tear crack on the top surface of the brick. Many bricks have it, but the size and location of the crack are different. It's all scrap. During extrusion molding, if the machine mouth is not upright, the mud will be more on one side and less on the other, and the mud strip will bend to the side with less mud. At this time, some people will move the mud strip upright and produce as usual. With this move, the time bomb torn on the top surface of the brick will be buried.
Treatment of the phenomenon of "enucleation of heart brick"
This means that crescent-shaped holes or arc-shaped cracks appear in the middle of ordinary solid brick blanks. All holes and cracks penetrate through the brick body. Almost all brick blanks are the same. The surfaces of open holes and cracks are smooth. It seems that when extruding brick blanks, the middle part is not supplied enough. When the molding moisture is increased, the problem disappears, and once the molding moisture is reduced, it reignites.
Equipment structural formula of vacuum extruder
Red brick machine for the whole steel structure, the body is all made of steel plate welding, is a single-axis, single clay cylinder, single spiral coaxial sealing mechanism. All reducers are hard tooth surface gears. The reamer adopts wear-resistant material spray welding process, which is convenient for maintenance and durable. The structure design is reasonable and the extrusion pressure is large. It is suitable for shale, high content fly ash, coal gangue, clay and other raw materials to produce hollow bricks of various specifications.
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