How to Distinguish the Quality of Diamond Saw Blade by Naked Eye?

You never know the quality of diamond saw blade until you try, and appropriate saw blades can achieve the best cutting performance. As a kind of superhard material product, diamond saw blade is mainly used for cutting concrete, refractory material, stone material, ceramic and other hard and brittle materials. Some are not sharp for cutting, or others’ service life is short, which both are problems that users of diamond saw blade commonly encounter.

Today we will teach everyone to distinguish the quality of diamond saw blade with the naked eye. Based on many years’ experience of senior experts, there are five methods to identify strengths and weaknesses of the quality of diamond saw blade.

First, to observe its concentration and distribution of the bare corundum on the cutting head: Good diamond saw blade will have higher content of corundum, but also not too much, and they are dispersed uniformly.

Second, to observe whether the weld line is complete and neat: If the weld line is of discontinuity, no vertical alignment, it will affect chip removal and cooling, and may lead to falling off of the cutting head.

Third, to observe whether diamond segment and matrix are in horizontal plane alignment: If it is uneven or jagged, it is likely to cause broken edge in using process, or falling off of the cutting head.

Fourth, to compare the segment thickness and the substrate thickness. Taking 350 mm granite saw blade for example, in general, the cutting head should be thicker around 1mm than the substrite, but the cutting head of 350 mm marble saw blade will be thicker around 0.2 mm to 0.5 mm. The reason that it is designed is to avoid damage substrate and improve the service life of saw blade.

Fifth, the sharpness and abrasion resistance of saw blade will have a reciprocal relationship. Our suggestion is that when the service life of saw blade has achieved the anticipated goal, don't ask for an increase in life span, because of the external environment, such as cutting machine, the operation of workers, the hardness of stone materials and so on and so forth will change at any time. And once the external environment changes, the previous wear-resisting saw blade may not be used.