Hollow fire bricks have strict requirements for forming operations. In the process of production preparation and operation, if there is slight negligence, it will bring many problems to the forming. Therefore, special attention should be paid to the following points in the molding operation:

1. When installing the mold, it is necessary to align the center of the machine mouth, the core tool, the machine head, and the center of the screw shaft, otherwise, the billet will suffer from rotten corners, bending, and other disadvantages;

2. It should be checked whether the position of the core head is correct and whether the end face of the core head is flush. Generally, the end face of the core head is required to retract 1-2mm into the machine mouth;

3. The mud material when starting up should be softer. When the billet enters the core and the billet is in good shape, adjust the moisture content of the billet until the billet is soft and hard;

4. When forming, it is necessary to check whether the extrusion speed of the mud strip is balanced frequently. The inspection method is to cut off the exposed mud strips at the machine mouth, cut them into uniform, then put them on the steel wire mesh arranged at equal distances, start the machine to extrude 100-200mm mud strips, stop and measure the length of the small mud strips divided by the kiln Whether it is consistent or not, you can see the speed of the parts from which to adjust in time. Generally speaking, the four corners of the brick should be required to be slightly faster, because the frictional resistance of the four corners is large, and problems such as corner cracks are often prone to occur;

5. During the molding process, the speed of the blank can be controlled, and the method of adjusting the core head can also be used to adjust. For the part with faster discharge, the adjacent core head can be adjusted (or a nut is placed at the end of the core head. , or add a washer), if the mud discharge speed of the four corners is slow, the core head adjacent to the four corners can be slightly adjusted out. If the above cannot solve the problem, the problem should be found in the structure of the machine port and the core tool;

6. If the mud cannot be squeezed out, or when the amount of local mud is very small, stop the machine to find the reason to avoid damage to the equipment;

7. Strictly control the particle size of the internal fuel in the raw material, and the internal combustion particle size should be less than 3 mm.

The main products of Hongtai Refractory Brick Company are high-alumina bricks, clay bricks, lightweight insulation bricks, refractory castables, and shaped and unshaped materials of various grades of refractory cement. For different industries, the cement industry uses anti-stripping high alumina bricks, alkali-resistant bricks, and phosphate bricks; the boiler industry uses various grades of wear-resistant bricks, corundum bricks, mullite bricks, and other shaping materials. The company adheres to the principle of "product quality is the life, enterprise integrity is the foundation", and has won the trust and praise of many users in the fierce market competition. Refractory products are sold all over the country and exported to Vietnam, India, South Korea, Pakistan, Iran, and other Southeast Asian countries and regions. For details, please consult.