Time：2022.11.19Browse：1
Silicon carbide is widely used in industry and plays an important role. Silicon carbide can also be used as an abrasive, so the quality of silicon carbide particles is particularly important. We want to test its quality, so how to test its quality?
Before proceeding to the analysis, the first thing we need to understand is that the abrasive is not only composed of particles of one shape, but only depends on the percentage of that shape. When analyzing the shape of abrasive grains, it can also be seen that the edges of the abrasive grain surface have characteristics such as smoothness, sharpness, rounded corners, straight lines, serrations, and cracks.
Impurities are often mixed into the grinding powder. One is the components contained in the abrasive grains themselves, which are mainly formed during the smelting of raw materials, such as iron oxide, silicon dioxide, chromium oxide, and sodium oxide. Another kind of impurity is dissociated between particles, mainly iron filings and dust generated during abrasive grinding. The presence of impurities is not conducive to the grinding effect. Therefore, pure white corundum or green silicon carbide powder must be selected as the grinding material for precision grinding.
There is more than one particle size of grinding powder. No matter which sorting method is used to obtain abrasives, the particle size is different, or the particle size of abrasives with the same particle size is inconsistent. It consists of five types: basic grain, large coarse grain, coarse grain, fine grain and mixed grain. Among them, if the number of large coarse grains and coarse grains is large, although the cutting ability of the abrasive is improved, the cutting ability of the workpiece will be reduced. Decreased surface finish. If the amount of fine particles is large, although a very smooth surface can be ground, the cutting ability is low. Therefore, the number of basic particles is one of the main factors affecting the cutting ability of abrasive grains and ensuring the machining accuracy. The uniformity of abrasive particle size mainly depends on the percentage of the number of basic particles. For this reason, the microscopic analysis of the size of abrasive grains is an important content for testing the quality of grinding powder.
Through the above introduction, we have an understanding of the quality identification method of silicon carbide particle grinding. If silicon carbide is used as an abrasive, its strength is good, or the requirements of internal components must meet relevant standards, so that it can better play an important role in grinding. Green silicon carbide powder for precision grinding is more suitable, and the particle size should be selected according to the actual situation.
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