1. Diamond particle size: The commonly used diamond particle size is 30/35～60/80. The harder the rock, the finer the grain size. Because under the same pressure conditions, the finer and sharper the diamond, this helps to cut into hard rock. In addition, generally large-diameter saw blades have high cutting efficiency, and coarser grain sizes should be used, such as 30/40, 40/50; small-diameter saw blades have low cutting efficiency and require smooth rock cutting sections. It is better to choose a finer grain size, such as 50/60, 60/80.
2. Diamond concentration: Diamond concentration refers to the density of diamonds distributed in the matrix of the working layer. When the volume of diamond accounts for 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 will reduce the average cutting force per diamond. However, increasing the depth will inevitably increase the cost of the saw blade, so there is a more economical concentration, and the concentration will increase as the cutting rate increases.
3. Hardness of cutter head bond: Generally speaking, the higher the hardness of the bond, the stronger the wear resistance. Therefore, when cutting hard rock, the binder with higher hardness should be selected; when cutting soft rock, the binder with lower hardness should be selected; when sawing hard and grinded rock, the hardness should be moderate Binding agent.
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