News - Disadvantages and Dangers of Grinding Wheel Slices in Use

Disadvantages and dangers of grinding wheel slices in use In daily life, I believe that many people have seen tools that use grinding wheels. Some grinding wheels are used to "grind" the surface of the workpiece, which we call abrasive discs; some grinding wheels are used to cut metal, which we call It is sliced. "Grinding disc grinding wheel" is ground with the outer end face, so it is generally thicker and more rigid, and it is not easy to break under high-speed force; Material, various indicators hope that it can be made as thin as possible, so the cutting disc grinding wheel is generally thinner; but the thinner the grinding wheel substrate is, the more likely it is that the grinding wheel "cracks". A grinding wheel is a round sheet of abrasives and binders, or some fibers for reinforcement.

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Seeing this, everyone will feel that this is a bit unreliable? For example, when cutting with a grinding wheel at a speed of up to 10,000 RPM, will the grinding wheel disintegrate naturally? The official answer is: under the current technical capabilities, it will not be broken under "normal circumstances"! But what is the definition of normal?
1. First of all, the grinding wheel used must have relevant certification and can pass a specific high-speed test. Generally speaking, the speed of passing the test is much higher than the nominal speed of the grinding wheel;
2. Secondly, the quality of the grinding wheel in production is required to be stable. No defects, because any cracks may originate from small defects;
3. The maximum speed of the machine used cannot exceed the rated speed of the grinding wheel at any time;
4. In the case of high-speed cutting, the grinding wheel cannot be subjected to excessive side
5. During the cutting process, it is necessary to always pay attention to whether there are irregular shapes or cracks. If there is any situation, it is necessary to stop using and replace the grinding wheel immediately. Therefore, the potential risk of the grinding wheel in use is still relatively large. The so-called "don't be afraid of ten thousand, just in case"; it is precisely because of the realization of the possibility of grinding wheel explosion that the international safety regulations are for tools using grinding wheels. There are various requirements, such as speed, protective structure, etc., but it is difficult to fundamentally eliminate... How to reduce the risk during cutting and improve work efficiency at the same time? Next, let's compare the Yifu TCT universal saw blade, which is also used to cut metal. Grinding wheel slicing VS. TCT universal saw blade:

6. From the composition of the grinding wheel slicing, it can be seen that the substrate of the disc is poor in rigidity, easy to break, and sensitive to speed; TCT saw blade is made of high-strength alloy steel such as 65Mn, and its strength is very high , elastic, hardly broken, can automatically restore the deformation within the allowable range, and ensure the accuracy of cutting;
7.The grinding wheel slice itself has no teeth, and uses hard abrasives to "grind" metal; the speed of cutting metal through grinding Very slow, low efficiency; TCT saw blades have teeth, use the tooth head to "cut" metal, and the cutting efficiency is greatly improved; the cutting speed of the saw blade can be changed by changing the parameters such as the tooth shape and front and rear angles.
8.During the grinding process, a large amount of heat is generated and a large number of splashing sparks are generated; the workpiece after cutting will be very hot, and it will also cause plastic melting, metal discoloration and performance changes; The TCT saw blade cuts the workpiece basically without sparks, and the heat generated after cutting is very low;
9.When the grinding wheel is cut, it will produce a lot of "metal + abrasive + adhesive" dust, and there is a pungent smell, which greatly deteriorates The operator's working environment.
10.The long-term use of the grinding wheel slices will become smaller and thinner due to wear and tear, or even notch or asymmetry, and the service life is relatively low; the carbide tip of the TCT saw blade is hard and wear-resistant, and has a longer service life, even when cutting softer materials. Can be close to the life of the machine.
11. The characteristics of the grinding wheel in the manufacture and use determine its poor dimensional stability, so it is difficult to use for high-precision cutting. TCT saw blade has high strength, high manufacturing precision and good cutting section, which is suitable for high-precision cutting.

Post time: Feb-21-2023