Are Diamond Saw Blades Resistant To High Temperatures?

Publish date:2022-07-04 11:14:52 Article From:Linxing Diamond Tools Clicks:

A diamond saw blade is a diamond tool that is often used in the processing of hard materials. These hard materials are often abrasive. During the cutting process, friction generates a lot of heat energy. If the heat energy cannot be cooled quickly, the temperature of the saw blade will increase greatly. If the temperature rises to a large extent, the saw blade will have various problems. For example, the teeth of the saw blade fall off; for example, the thermal expansion of the saw blade causes the saw blade to soften and deform; for example, the diamond in the blade head of the saw blade will be carbonized, etc. These problems will lead to extremely serious quality problems of the saw blade, which will affect the later cutting, and even some production accidents caused by stable quality. Therefore, the problem of overheating and heat resistance of the saw blade must be worthy of deep digging by diamond saw blade manufacturers.

So does diamond saw blade can resistant high temperature? The decisive factor for the high temperature resistance of the diamond saw blade is determined according to the actual situation of the saw blade. mainly from these factors:

1: The material of the saw blade base, there are many kinds of saw blade base materials, Different alloy materials have different heat resistance properties and thermal expansion coefficients, and these differences in properties will lead to different situations in the saw blade substrate. For example, 65Mn spring steel, this kind of steel is only suitable for a small cutting blade. If the cutting performance is required to be high, then such a material is not suitable. For example, for a saw blade made of 30CrMo material, if the cutting temperature does not exceed 500 degrees Celsius, the cutting performance is stable. If it exceeds 500 degrees Celsius, the performance of the saw blade matrix begins to decline significantly. 50Mn2V alloy steel is the mainstream saw blade steel currently used for cutting stone. It has high temperature resistance and still has strong rigidity at 830-980 degrees Celsius. Other substrates, such as carbon steel, high-speed steel, etc., have their own characteristics and different heat resistance, so it is very important to choose a reasonable saw blade substrate material according to the appropriate cutting environment.

2: The heat resistance of the saw blade also determines the production process of the saw blade. For example, saw blades produced by electroplating process and brazing process, because diamond is attached to the surface of the saw blade substrate, In the process of cutting, due to the strong adaptability to temperature in the process of brazing and electroplating, the saw blade is not much affected by high temperature during the cutting process. There is also laser welding. Since the saw blade uses laser to fuse points during the welding process, it has better adaptability to high temperature. The real impact is the high-frequency welded saw blade. Since the saw blade base and the cutter head are fixed entirely by the welding blade, and the material of the welding blade has a low melting point, in a high temperature environment, the welding blade will melt rapidly, resulting in Tooth loss, segment offset, etc.

3: The carcass material of the saw blade teeth determines the heat resistance of the saw blade. Due to the difference in the material of the metal matrix of the segment part of the diamond saw blade, various situations will occur during the sintering process. For example, the heat resistance of the sintered metal alloy material is not enough. When the segment is affected by high temperature, the segment will soften, and the segment may even be deformed and twisted. The thermal stability of the carcass material is important. It is worth noting that the thermal stability of the saw blade material does not have much to do with the hardness of the material itself, but has a greater relationship with its raw material.

4: The determining factor of the heat resistance of the saw blade is the melting temperature of the solder. Copper solder tabs are different from silver solder tabs due to the difference in the material content of silver and copper. Therefore, during the sintering process of the material, there will be a large change in the welding temperature. The low temperature solder piece begins to melt at 470 degrees Celsius, and if the silver solder piece has a high content of silver, the temperature of the solder piece will be at Melting is possible at around 600 degrees Celsius.

To put it simply, the high temperature resistance of diamond saw blades is not for all series of products, especially the saw blades, which are produced by cold pressing and sintering to produce small slices with a diameter of less than or equal to 230mm. This kind of saw blade can often be cut with high temperature resistance, mainly due to its low processing efficiency. Therefore, many saw blades with high temperature resistance are relatively speaking. Customers who have high temperature resistance requirements should try their best to choose a more suitable production process and a more suitable carcass material when selecting saw blades to obtain better cutting results.

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