Reasons and solutions for edge breakage in diamond saw blade cutting

During the cutting process of stone, especially during the cutting of slabs, edge breakage often occurs. Specifically, the edges of the stone are cracked or damaged, and brittle or loose materials are more prone to this problem. The first feeling of the owner of the stone factory when this problem occurs is that the saw blade needs to be replaced. In fact, this is not the case. There are many reasons for edge breakage in stone cutting, and simply thinking that it is a problem with the saw blade cannot solve the problem. Let's take a look at the reasons that affect the occurrence of stone edge collapse?

1: Generally speaking, due to the hardness and brittleness of the material being cut, as well as the softness of the stone, unstable materials are particularly prone to edge breakage. When cutting these two types of materials, it is necessary to re sharpen the saw blade, that is, sharpen it. Cutting these two types of materials requires a high sharpness of the blade, and sharpening the blade helps to cut a flat cut.

2: Experience and operation, if encountered with skilled hands, have an understanding of stone performance, mechanical performance, or saw blade cutting performance. You will know what the problem is with just one cut. If experienced, you can adjust the saw blade's linear speed, cutting speed, and rotational speed according to the stone performance. For example, cutting hard and brittle stone, increasing drilling speed, reducing line speed, and lowering cutting depth can significantly change the problem of edge breakage.

In addition to experience, the operation of stone processors is also very important, such as turning on the saw blade before cutting, correctly installing the flange, controlling the coolant, frequently sharpening the blade with refractory bricks, etc., which can greatly improve the sharpness of the saw blade and reduce the occurrence of stone edge breakage.

3: Diamond blade problem. The problem of edge breakage often comes from the blade, and there are three main factors that have a significant impact:

1. The shape of the cutting edge is generally better with an R-shaped cutting edge than with an arc-shaped cutting edge, resulting in better continuity during grinding and fewer occurrences of edge breakage.

2. The problem with the structure of the cutting head. Under normal circumstances, if the cutting head adopts a multi-layer structure, although it improves the sharpness of the cutting head, it cannot solve the problem of edge breakage. On the contrary, the sandwich cutting head has a large cutting surface, and the local pressure on the stone is relatively small, so there will not be too many problems during cutting.

3. The formula issue, in simple terms, is that the sharpness of the blade is not sufficient, especially when some factories require mixed cutting. The saw blade needs to cut multiple types of stones. When encountering certain specific stones, if the cutting ability of the saw blade is in a poor state (such as insufficient cutting edge), there will definitely be a problem of edge breakage if cutting is carried out. However, some blade heads have excellent sharpness and there will be no edge breakage during the cutting process. Such saw blades often have a higher price or a shorter lifespan.

4. Welding issues: During the welding process, it is necessary to test the flatness, end jump, and diameter jump of the saw blade. If such problems occur with the saw blade for a long time, the relevant data of the saw blade can be tested. It is also possible that the saw blade is twisted or deformed, which can cause the stone to have broken edges.

5. The problems with stone cutting machines include mechanical aging, uneven spindle, and shaking of the spindle, which can also lead to edge breakage of the stone.

So the edge breakage problem that occurs during diamond saw blade cutting of stone is not necessarily a single problem. In many cases, it is necessary to eliminate the problem one by one, carefully discover and solve the problem, in order to minimize the occurrence of edge breakage.