Why does the bending plate occur in the process of stone sawing?

During the normal cutting process of the stone, the saw blade cuts the block, and diamond segments of the saw blade have a huge frictional force with the stone, which eventually causes wear on the cutting surface of the stone. The effect of this wear is like cutting. Stone blocks are processed into pieces of stone slabs. If these slabs are in a normal cutting state, the entire slab will be flat, but sometimes, some problems are encountered during the cutting process, which will cause the slabs to be bent. So why does this happen? How to deal with such situations? This article will give a detailed introduction.

The performance of stone slab bending mainly presents three situations:

The first type: there is a bending in the cutting length. The specific performance is that during the cutting process of the saw blade, the cutting front and the cutting back show different thicknesses. For instance, the front thin and the back thick, or the front thick and the back thin, we call this uneven thickness problem in the length of the stone slab as left-right bending.

The second type: in the direction of cutting depth, the flatness is extremely poor. In other words, the height direction of the stone is narrow at the top and wide at the bottom, or wide at the top and narrow at the bottom, or more serious uneven thickness of the stone in height, which is collectively called up and down bending.



So what is the reason for these two different situations? How to solve it? First of all, you need to understand why the stone plate bending occurs:

1: The problem of the saw blade, the material problem of the saw blade, or the dry cutting of the saw blade who is overheating that results the thermal expansion, all of which eventually leads to the deformation of the saw blade base. This kind of situation usually causes the saw blade to deform left and right or up and down. The result of the deformation depends on the deformed part of the saw blade, and the magnitude of the deformation depends on the material of the saw blade itself. If the material is soft, the bending of the slab caused by the deformation is mainly concentrated on the left and right sides. However, if the material is hard and rigid, the deformation will be concentrated on the upper and lower parts of the slab.

2: The phenomenon of stone slab bending will also occur if the cutting speed is too fast. If the cutting speed is too fast, and the sharpness of the diamond segment does not meet the requirements, the slab will be bent left and right. Experienced operators will appropriately reduce the cutting speed and increase the cutting depth, which can increase the working time per unit area of the diamond segment, reduce the impact force of the segment, increase the friction force of the segment and improve the cutting stability. In this way, the chance of bending the slab can be reduced . However, the cutting depth should not be too high. If the cutting depth is increased blindly and the feeding speed is reduced, another situation will occur, that is, the upper and lower parts of the slabs are bent. Therefore, it is very important to adjust the feeding speed and the cutting depth. Selecting the appropriate cutting parameters for cutting can prevent the stone from bending.

3: Stone machinery aging or quality problems. the bending of stone slab is often caused by stone machinery. For example, in old-fashioned stone cutting machines, the spindle is aging, deformed or even damaged, prone to mechanical instability, jittering in cutting, harsh cutting noise from saw blades and abnormal cutting. These problems all belong to mechanical problems. When you encounter this problem, you can ask a mechanical engineer to check the headstock. Of course, the best option is to buy a new type of machinery to make the cutting more stable. Friendly suggestions: stone machinery needs frequent maintenance, checks whether the power supply system, lubricating oil, etc. are normal, and finally checks the headstock frequently. Early detection of problems can avoid many problems.



4: There is a problem with the cooling system. The cooling system in the stone cutting process is very important. The traditional cutting only needs to add water. In recent years, the use of coolant can increase the friction of the segment, reduce the occurrence of segment oxidation and rust, and make the segment have better cooling properties. In the process of daily use, we should also pay attention to the flow of cooling liquid. Too much coolant will cause the saw blade to slip, resulting in the situation of cutting and bending. If the coolant flow is reduced, the temperature of the segments and the base of the saw blade will increase rapidly due to insufficient coolant, resulting in deformation and distortion of the saw blade or segments , which will also lead to the problem of bending of the slab.

In fact, in the process of saw blade cutting stone, there are many reasons that can affect the occurrence of saw blade cutting and bending the slab, such as excessively hard stone material, unreasonable selection of saw blade and segment, and unskilled operators. Most of the ways to solve these problems need to be carefully analyzed, and finally find a suitable solution.