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How to improve the sharpness of diamond segment
Publish Date:2020-12-31
There are two important parameters for the quality of a diamond segment, one is the sharpness and the other is the service life. The higher the sharpness, the higher the grinding performance. The segment will become fast, stable, efficient and save in the process of cutting products. Time cost, labor cost, and energy consumption are reduced. Therefore, improving sharpness is a problem that diamond tool manufacturers must face. In terms of countermeasures, the following points can be improved:
The choice of diamond powder strength. Diamond saw blades rely on abrasives and cutting to process materials. Therefore, in the selection of diamond power with stable performance and not easily broken. Generally, diamonds with higher grades have better cutting results. Of course, all this depends on the object to be cut. If cut a softer stone use a higher grade and stronger hardness diamond powder, the segment will become blunt, resulting in a decrease in efficiency. Therefore, appropriately improving the diamond grade is one of the methods to effectively improve the cutting efficiency of the diamond blade.
Enhance the bonding level of diamond. A layer of strong carbon compound is plated on the diamond surface, which will form metal elements such as plating titanium, nickel, tungsten, etc., covering the surface of the diamond to improve the bonding of the diamond and increase the cohesion of the diamond. The diamond is not easy to fall off prematurely during the cutting process and keep the diamond sharp. This method is mainly to increase the holding force of the diamond through the matrix bond, thereby increasing the cutting performance of the segment. If the holding force is not enough, the diamond will fall off quickly, and the high-efficiency cutting requirements will naturally not be met.
Match the diamond particles correctly. Within a certain range, the sharpness of the saw blade changes with the concentration of diamond, the lower the concentration, the sharper the saw blade. Due to the high requirements of diamond hardness and elastic modulus, the segment needs to be sharp, and the diamond power grit requirements are different. After many manufacturing experiments, the best rate of the diamond grit coarse, medium and fine is 1:0.0227:0.071. Of course, these data are based on the current cutting performance, and there may be more configuration ratios, which require continuous research and development. In general, the diamond grit ratio will affect the cutting performance of the diamond segment.
The fine powder helps reduce the sintering temperature and strengthen the hardness of the matrix. The pre-alloyed powder shortens the contact time between the powder and the air, prevents the premature loss and segregation of low melting point metals, and enhances the holding diamond powder. Therefore, many manufacturers currently use pre-alloyed powder as the matrix binder, which also has a good effect. However, the price of this type of segment is higher. And for different processing objects, it is difficult to adjust the segment made of prefabricated alloy powder to the best.
Rare earth elements and the correct welding technology, rare earth elements can reduce the wear of the bonding agent, and the correct welding ensures that the diamond segment is not burned and does not drop.
In summary, the improvement of segment performance requires long-term continuous R&D and improvement to achieve breakthroughs. At present, there is still a long way to go if you want to break through the bottleneck in a short time and achieve revolutionary efficiency improvements.
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