Published by: Linyi Pioneer Diamond Tools Co., LTD. Release time: 2025-01-03 Popularity: 0
In recent years, diamond saw blades are more and more widely used in our daily life, but we should also pay attention to the following problems when using them
1, the correct installation
The installation of diamond saw blade is correct or not and the installation accuracy is closely related to the cutting efficiency, cutting quality and service life of the saw blade. After installation, ensure that the saw blade runs smoothly during the cutting process and does not produce vibration (except for the influence of the saw blade's own quality and the rigidity of the cutting machine). When installing the saw blade, first of all, ensure that the direction of the cutting edge indicated on the saw blade is consistent with the rotation direction of the cutting machine spindle; To clean the contact surface of the saw blade mounting hole, the cutting machine spindle and the flange, it is necessary to ensure that the contact between them is smooth and good; The diameter of the flange should be reasonably selected with the diameter of the saw blade. The flange is too small, when the saw blade end deflection is large, the flange is too large, the main shaft hanging weight is increased, it will also increase the beating, while reducing the processing depth of the material. After installation, the runout value of the saw blade and flange must reach the specified value before use.
2, the correct choice of cutting machine
Pay secial attention to the power, speed, rigidity and accuracy of the cutting machine. The diamond saw blade below 150 should use 1 ~ 1.5kW, speed 7255 ~ 14500r.p.m adjustable cutting machine, and the 150 ~ 230 saw blade should use 1.5 ~ 3KW, speed 4000 ~ 11000r.p.m adjustable cutting machine; Medium diameter saw blade should be used above 15HP(electric), line speed 20 ~ 60m/s adjustable cutting machine, medium diameter engineering saw blade should be used above 30HP(electric) or 55HP(gasoline or diesel power), line speed 35 ~ 70m/s adjustable cutting machine; The power of the large diameter saw blade cutting machine is related to the diameter and quantity of the saw blade, such as the domestic general - 1600 single-blade saw machine power 37 ~ 45KW, speed 270 ~ 360r.p.m.
3, reasonable selection of diamond saw blade cutting parameters
A. Coolant: The use of coolant has two functions: first, it plays a cooling role. Due to the friction and impact between the circular saw blade and aluminum in the cutting process, a lot of heat is generated on the cutting surface, and the heat dissipation of aluminum is poor, so that most of the heat is absorbed by the saw blade, especially the diamond cutter head, which is the first to be caused by diamond graphitization, and the cutter head is also easy to be burned and easy to fall off. At the same time, the steel matrix is easy to produce thermal deformation and crack from the root of the nozzle. A large amount of coolant continues to spray evenly from the front and back of the saw blade to the incision, which will play a good role in cooling and protecting the saw blade; Another effect of using coolant is to flush chips. When the coolant rushes to the incision at a certain pressure (generally requiring hydraulic pressure greater than 0.1MPa), a large number of material chips will be taken away, which has great benefits in reducing the secondary wear of the diamond tool head and matrix. In addition, if the emulsion type of coolant is used, the hydrophilic and oil-philic characteristics of the emulsifier can make the saw blade surface adhere to a layer of lubricating oil film, which can reduce the friction coefficient during sawing, thereby reducing cutting resistance and reducing vibration. Coolant is generally used in cooling water, you can also add an appropriate amount of anti-rust agent in cooling water and use emulsion (add saponification dissolved oil, Taiancient oil and other hydrophilic emulsifiers).
b, saw blade line speed: the diamond saw blade line speed has a great impact on cutting, the line speed is too low or too high, will accelerate the wear of the diamond head, making the saw blade abnormal wear faster, while cutting efficiency will also decline. This is because when the cutting speed is very low, the contact time between the diamond cutter head and the material on the saw blade increases correspondingly during each cutting, aggravating the friction, increasing the heat, worsening the heat dissipation and cooling conditions, and aggravating the loss of the saw blade; The linear speed is too high, the cutting depth of single diamond per unit time is reduced, the friction and wear of aluminum on diamond will be reduced, but at this time the dynamic load of the interaction between the diamond cutter head and the cut material is increased, not only the loss of diamond by mechanical impact is increased, but also because the diamond is easy to break and fall off.
