There are various methods for correctly selecting diamond circular saw blades, among which the most basic steps include understanding the structure, size, and substrate material of the saw blade. Understanding the conventional structure and dimensions of diamond circular saw blades with diameters ranging from 105mm to 2200mm is crucial for recommending suitable blade structure sizes.

The selection of diamond circular saw blade substrate is also very important. The substrate material needs to have sufficient strength, rigidity, and hardness, and the hardness requirement for welding saw blade substrates is usually between HRC37 and 42. The roughness of the substrate surface should not exceed Ra3.2 microns, and there should be no cracks, burrs, or rust stains. In addition, the matrix needs to eliminate deformation forces and microcracks to ensure the balance of tensile stress and flatness requirements.

The structure of the diamond circular saw blade substrate is divided into continuous type and water nozzle type. The continuous matrix is mainly used for making sintered saw blades, and its edges are usually thin Great Wall teeth. The water inlet type substrate is suitable for welding or integral sintering, and its edges are often thin Great Wall teeth. Narrow nozzles (such as small U-shaped and spoon shaped) are suitable for cutting weakly abrasive or brittle materials, while wide nozzles (such as large U-shaped) are suitable for cutting strongly abrasive materials.

The narrow water nozzle substrate can bring the cutting heads closer to each other during cutting, ensuring good continuity during sawing, less impact, neat cutting, and long service life of the saw blade. However, the stress at the bottom of narrow water outlets is more concentrated, especially for small U-shaped ones, which are prone to cracking at this location. Opening the water outlet can reduce the wear of the circular belt of the saw blade base water outlet, and using a saw blade with a tooth guard structure can reduce wear.

The substrate with a water outlet can increase stress, which helps to prevent deformation during manufacturing and facilitate chip removal and cooling during use. But boiling water can easily cause cracking and accelerated wear of the substrate during use. The sound-absorbing substrate can reduce the sharp high-frequency noise generated during saw blade cutting, and the sound-absorbing substrate made of composite materials can further reduce noise.

The selection of diamonds should be based on the properties of the substrate, binder matrix, manufacturing process, processing material properties, cutting machine parameters, cutting methods, and cutting parameters. Diamond undergoes friction and impact during the cutting process, and its wear and tear depend on the hardness and friction of the material being cut. Reasonable wear and breakage of diamonds can help improve cutting efficiency and service life.

By adjusting the diamond, binder, and cutting parameters, it is possible to ensure that the diamond fully functions and wears out properly, thereby improving cutting efficiency and service life. Premature consumption or excessive wear resistance of diamonds can affect the cutting effect, and it is necessary to balance the wear and breakage of diamonds by adjusting parameters appropriately.