The second aspect is the configuration of the friction parts of the pump. As a magnetic pump product, the wearing parts of the pump are mainly the parts that often rotate and rub in the liquid, such as sliding bearings, thrust bearings, and bushings. The wear resistance of these parts will directly affect the service life of the pump and the cost of replacing parts for users. Internationally famous magnetic pump manufacturers, regardless of metal or plastic magnetic pumps, sliding bearings, thrust bearings, and shaft sleeves are all made of silicon carbide with excellent corrosion resistance and wear resistance. However, the bending strength of silicon carbide is only 451Mpa, the material is relatively brittle, and the impact resistance is poor. Therefore, when corrosive conditions permit, you can choose a good impact-resistant tungsten carbide material with a bending strength of 1471 Mpa, which is more than three times higher than that of silicon carbide. Compared with silicon carbide, tungsten carbide has the advantages of good toughness and good impact resistance. In case of dry grinding of the pump, it will not be broken like silicon carbide, which will cause the friction between the inner magnetic steel and the isolation sleeve and other components, resulting in damage to the pump. The wearing parts of the magnetic pump are made of silicon carbide and tungsten carbide, which are highly configured, so that the pump can run for a long time without maintenance. The service life is much longer than that of materials such as tetrafluoro-graphite, graphite, alumina, and silicon nitride. It can reduce the cost of frequent replacement of wearing parts and other components in a short period of time due to factors such as wear-resistant parts and poor strength, as well as environmental and safety costs.
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