The use method of the power press is very important. Improper use will cause the increase of inferior products. If it is not used properly in use, the incorrect method will cause great problems. To give a few examples, how to deal with the problem of brick burst and cracks in the production of the machine.
The power press produces brick and tile burst. When the residual moisture of the brick slab entering the kiln is too high, and the heating rate in the early stage of the pre-tropical zone exceeds 25-35 ℃ / h, the rapidly vaporized steam in the green body can not be discharged, and the brick squeezes the brick, the higher the residual moisture , The more serious the situation, even the cracking sound can be heard on the roof of the kiln, especially after entering the pre-tropical zone after squatting, the temperature rise is more urgent. The moisture of death and injury is not too high. For fine cracks, in addition to controlling the residual moisture in the kiln blanks to be less than 8%, the pre-heating zone should be extended appropriately to slowly dehydrate slowly and raise the remote brake slowly after squatting fire and burning paper in the kiln. Slowly increase.
Cracks occurred in the tiles produced by the power press. Shallow and thin cracks appeared on the tile surface, and there were basically no cracks in the straight line. Sometimes the cracks extended to the strip surface or the top surface. Most of these are hidden dangers left during molding, and the improper use of the calcination and crack expansion. To this end, the plasticity index of the raw material should be appropriately reduced, the speed and the spiral angle of the screw reamer of the cement brick machine should be adjusted, a separate screw reamer should be used, and a mud stick should be added to the mud tank to reduce the mud layering; Measures such as water, steam agitation, and vacuum squeezing mud are used to reduce the water and gas in the mud to eliminate stratification; in addition, roasting should use the gate correctly, evenly drain the moisture, and implement the gate in front of the gate in stages.
