The material of the substrate of the concrete cutting saw blade must have a certain strength, and at the same time not be too soft. In the cutting work, the diamond saw blade will be strongly vibrated in use, because the cutter head is thicker than the base body, and there is a certain gap between the base body and the material to be cut during use. Fatigue fracture, the matrix must have a certain plastic toughness and higher fatigue limit and elastic limit, in order to play a role in mitigating impact and absorbing vibration, thereby improving the working efficiency of concrete cutting saw blades.
Due to the characteristics of the concrete cutting saw blade, the selection of the base of the concrete cutting saw blade is more stringent. The selection skills of the diamond saw blade base are nothing more than these two: First, select the grinding wheel with the larger particle size. , softer teeth can be selected. After cooling with cold water, grind again, dry grinding for 1-2 hours; second, the fine grinding degree of diamond should be calculated well and kept well under the progress of shape. Using these two skills, it is much easier to choose a diamond saw blade substrate with plastic toughness, fatigue limit, and elastic limit.
The matrix of the concrete cutting saw blade should have a certain plastic toughness and high fatigue limit and elastic limit. From the technical standard requirements, for the elastic limit, take the diamond saw blade with 65Mn as the matrix material as an example, its heat treatment There are two ways: quenching and tempering at medium temperature, but quenching is easy to deform and crack for the matrix of the diamond saw blade. Therefore, in the heat treatment process of the diamond saw blade substrate, the understanding and mastery of these two methods should be strengthened to reduce the impact on the mechanical properties of the diamond saw blade substrate.
The matrix of the concrete cutting saw blade plays the main role of bonding the cutter head, and the mechanical properties of the matrix also have a great influence on its quality and performance. Therefore, whether it is the choice of the substrate of the concrete cutting saw blade or the heat treatment process, the role of the substrate cannot be ignored.
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