The material of the substrate of the road cutting sheet must have a certain strength, and at the same time, it must not be too soft. In the cutting work, the diamond saw blade will be subjected to strong vibration 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 a higher fatigue limit and elastic limit, in order to play a role in mitigating impact and absorbing vibration, thereby improving the working efficiency of road cutting blades.
Due to the characteristics of the object of use of the road cutting blade, the selection of the matrix of the road cutting blade is more stringent. The selection skills of the diamond saw blade base are nothing more than these two: first, according to the grinding wheel with the larger particle size, the selection can be selected. Softer gear teeth. 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 road cutting blade should have a certain plastic toughness, 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 methods include: Two types: quenching and tempering at medium temperature, but quenching is prone to deformation and cracking of the diamond saw blade substrate. 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 road cutting 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 selection of the substrate of the road cutting sheet or the heat treatment process, the role of the substrate cannot be ignored.
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