The safety performance of diamond saw blades is a quality issue that cannot be ignored

The safety performance of diamond saw blades is a quality issue that cannot be ignored, because "tooth loss" due to production or use reasons directly affects the performance of the saw blade and the personal safety of the operator. In industrial production, there is a certain degree of danger in the use of diamond saw blade tools. Out of the protection and emphasis on life, its safety is increasingly valued by manufacturers and users. Although national standards and industry standards have not yet made clear and specific regulations on the safety performance of diamond saw blades, we can learn from relevant international standards, such as the new EN13236 standard and foreign cases of recall problems, to improve production processes and improve monitoring Means to ensure the safety performance of diamond saw blades.

1. Factors affecting the safety performance of diamond saw blades

1. The scalloped part of the base is not clean, resulting in weak welding joints.

2. The sintering process parameters are not well controlled, the sintering temperature is low, "under-firing" makes the welding weak, and the carcass itself has low strength and is brittle.

2. Measures to improve the safety performance of diamond saw blades

Optimized design. Raw material powder with low oxygen content is used; the outer circle shape of the matrix is changed to "swallow-tooth shape" to improve the bonding strength between the carcass and the matrix.

2. Optimize the process. The tooth part of the base body adopts the "copper plating" process; the cold pressing-hot sintering process; the hot pressing-fusion welding process (that is, the laser welding process). In the traditional high-frequency welding, the bonding strength of the weld (especially at high temperature) is not high enough, and accidents such as the flying of the cutter head and injuring people are prone to occur during the sawing process, and the safety and reliability of the saw blade is not good. Laser welding uses focused laser beams as energy, adopts the mechanism of deep penetration welding, melts the transition layer and matrix of the cutter head, and forms a firm weld, even if it is used without cooling water for saw blades and drills. It can guarantee high welding strength and ensure the safety of use.