Introduction to the hottest diamond circular saw b

2022-08-11
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Introduction to diamond circular saw blade

I. sawing parameters

(1) linear speed of saw blade: in practical work, the linear speed of diamond circular saw blade is limited by equipment conditions, saw blade quality and the nature of the stone being sawed. In terms of the best service life and cutting efficiency of the saw blade, the linear speed of the saw blade should be selected according to the properties of different stones. When sawing granite, the linear speed of the saw blade can be selected within the range of 25m ~ 35m/s. For granite with high quartz content and difficult to cut, the lower limit of the linear speed of the saw blade is appropriate. When producing granite tiles, the diameter of diamond circular saw blade used is small, and the linear speed can reach 35m/s

(2) feed speed: the feed speed is the feed speed of the sawed stone. Its size affects the sawing rate, the force on the saw blade and the heat dissipation in the sawing area. Its value should be selected according to the nature of the sawed stone. Generally speaking, sawing soft stones, such as marble, can appropriately increase the feed speed. If the feed speed is too low, it is more conducive to improve the sawing rate. Sawing fine-grained and relatively homogeneous granite can appropriately improve the feed speed. If the feed speed is too low, the diamond edge is easy to be ground flat. Adjust the spacing between the main body and the dynamometer and adjust the direction according to the shape and foundation drawing. However, when sawing granite with coarse grain structure and uneven soft and hard, the feed speed should be reduced, otherwise it will cause the vibration of the saw blade, resulting in diamond fragmentation and reduce the sawing rate. The feed speed of sawing granite is generally selected within the range of 9m ~ 12m/min

(3) sawing depth: sawing depth is an important parameter related to diamond wear, effective sawing, force on the saw blade and the properties of the sawed stone. Generally speaking, when the linear speed of the diamond circular saw blade is high, a small cutting depth should be selected. From the current technology, in recent days, the depth of sawing diamond can be selected between 1mm and 10mm. Generally, when cutting granite blocks with large-diameter saw blades, the sawing depth can be controlled between 1mm and 2mm, and at the same time, the feed speed should be reduced. When the linear speed of diamond circular saw blade is large, a large cutting depth should be selected. However, when the saw performance and tool strength are within the allowable range, a larger cutting concentration should be taken as far as possible to improve the cutting efficiency. When there are requirements for the machined surface, small depth cutting shall be adopted

II. Other influencing factors

(1) diamond particle size: the commonly used diamond particle size is in the range of 30/35 ~ 60/80. The harder the rock is, the finer the particle size should be selected. Because under the same pressure, the finer the diamond, the sharper it is, which is conducive to cutting into hard rocks. In addition, generally, the large diameter saw blade requires high sawing efficiency, and it is advisable to choose a coarser particle size; The efficiency of sawing with small diameter saw blade is low, resulting in the decline of material quality. It is required that the rock sawing section is smooth, and it is appropriate to choose a finer particle size

(2) cutter head concentration: the so-called diamond concentration refers to the density of diamond distributed in the working layer matrix. Increasing the diamond concentration is expected to prolong the service life of the saw blade, because increasing the concentration reduces the average cutting force on each diamond. However, increasing the depth will inevitably increase the cost of the saw blade, so there is a most economical concentration, and this concentration increases with the increase of the cutting rate

(3) hardness of cutter head Bond: Generally speaking, the higher the hardness of the bond, the stronger its wear resistance. Therefore, when sawing abrasive rocks, the hardness of the bond should be high; When sawing soft rock, the hardness of the bond should be low; When the microcomputer controlled sawing machine is 0.01 (5) 00mm/min, the hardness of the bond should be moderate

(4) force effect, temperature effect and wear damage: diamond circular saw blade will be subjected to alternating loads such as centrifugal force, sawing force and sawing heat in the process of cutting stone

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