(1) 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 sawing efficiency, and a coarser particle size should be selected, such as 30/40, 40/50; small-diameter saw blades have low cutting efficiency and require a smooth section of rock Choose a finer particle size, such as 50/60, 60/80.
(2) Concentration of cutter head: The so-called diamond concentration refers to the density of diamonds distributed in the matrix of the working layer (that is, the weight of diamonds per 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 3.3 carats of diamonds is 75%. The volume concentration indicates the volume of the diamond in the agglomerate, and stipulates that the concentration when the volume of the diamond accounts for 1/4 of the total volume 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 of the cutting rate.
(3) The hardness of the binder of the cutter head: Generally speaking, the higher the hardness of the binder, 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 .
(4) 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.
