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Selection of diamond powder for diamond segment
Publish Date:2020-09-24
Diamond segment are used for diamond saw blades, which play an important role in many industries, especially in stone processing factories, where diamond blades are almost always used. But do you know that there are diamond powders in the diamond segment, which are black, yellow, or transparent crystals. Do you know what this thing is for? This article mainly introduces the selection of these crystals.These crystals are diamonds, diamonds can be divided into natural diamonds and artificial diamonds according. Natural diamonds are becoming less and less expensive, so most of the diamond segments currently choose artificial diamond powder. The crystal of the initial diamond segment is complete and has a regular tetrahedral structure. During the cutting process, the complete diamond is impacted and slowly worn, and crystal fragments begin to appear. When the fragments are small enough, start fall off from the segment.
According to the actual inspection process, the most suitable for diamond segment product is to choose a solid and complete diamond with an octahedral crystal. This kind of crystal diamond has the smallest touch area, and the strongest resistance to breakage, and can extremely reduce the power consumption of mechanical work, and can extend the segment life.
Diamond segment should choose diamond crystal with high impact strength. Therefore, when selecting diamond, the condition of the bond and matrix, segment shape design, the characteristics of the stone, and the power of the machine, in terms of particle size, impurities, etc. , Seek the best solution. Generally speaking, it is very important to choose diamond with high impact strength as the raw material of segment when we cut stronger stone. Of course, the required production cost will increase accordingly.
In addition to the choice of diamond structure, there is also a choice in terms of particle size. For diamond tool manufacturers, ultra-fine diamond powder crystals can make diamond blades more high-quality. The reasons are as follows:
1, it is beneficial to reduce the sintering temperature and increase the hardness of the carcass. Large diamond crystals need to be embedded in a more stable segment bond, and higher temperatures are required to complete the sintering process of the entire segment.
2, the matrix powder and the diamond powder with a small particle size can be mixed well without uneven mixing, which avoid long-term contact between metal powder and air, thereby avoiding the premature loss and segregation of low melting point metals, thereby affecting the strength of the segment bond and reducing the holding force of the diamond segment.
3: Small diamond powder can be added with appropriate amount of rare earth elements (such as rare earth lanthanum, cerium, etc.) in the matrix powder of the segment. It can significantly reduce the wear of the bond and improve the cutting efficiency of the diamond saw blade.
4: The fine diamond powder crystals can make the segment easier to open during the cutting process. In the later cutting process, avoid the situation of being unable to cut.
Diamond segment powder is a loss product in diamond segment. How to use reasonable materials and reduce production costs has become an important choice for future segment development.
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