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Technical Guides
Factors Affecting the Service Life of Diamond Saw Blades
Jan 13 , 2021

Diamond particle size

The commonly used diamond particle size is in the range of 30/35 to 60/80. The harder the rock, the finer grain size should be selected. Because under the same pressure conditions, the finer the diamond, the sharper it is, which is conducive to cutting into hard rocks. In addition, generally large-diameter saw blades require high cutting efficiency, and coarser particle size should be selected, such as 30/40, 40/50. Small-diameter saw blades have low cutting efficiency and require a smooth cutting section for rock. Choose a finer particle size, such as 50/60, 60/80.

The concentration of cutter head

The so-called diamond concentration refers to the density of diamond distribution in the working layer matrix (that is, the weight of diamond contained in a unit area). "Specifications" stipulate that the concentration of 4.4 carats of diamond per cubic centimeter of the working matrix is 100%, and the concentration of diamonds of 3.3 carats is 75%. The volume concentration indicates the volume of diamond in the agglomerate, and stipulates that when the volume of diamond occupies 1/4 of the total volume, the concentration is 100%. Increasing the diamond concentration is expected to extend the life of the saw blade, because increasing the concentration reduces the average cutting force experienced by each diamond. But increasing the depth will inevitably increase the cost of the saw blade, so there is a most economical concentration, and the concentration increases with the increase in the cutting rate.

The hardness of the cutter head bond

Generally speaking, the higher the hardness of the bond, the stronger its wear resistance. Therefore, when sawing abrasive rocks, the bond hardness should be high. When sawing soft rocks, the bond hardness should be low. When sawing abrasive and hard rocks, the bond hardness should be moderate.

There are many others factors such as force effect, temperature effect and wear damage. The diamond circular saw blade will be subjected to alternating loads such as centrifugal force, sawing force, and sawing heat during the process of cutting stone. TransGrind can provide you with top quality concrete surface preparation tools and expert guidance on selecting a tool to ensure your blade performs effectively.

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