The chemical magnetic pump is a common and widely used chemical pump product. The motor is connected to the external magnetic rotation to drive the internal magnetic rotation, and the internal magnetic pump rotates the impeller through the pump shaft to complete the transportation. If the pump shaft of the chemical magnetic pump has problems, it is very serious Therefore, the steel selected for the magnetic pump bearing is high-carbon chromium bearing steel, because the smelting of high-quality bearing steel is through vacuum deoxidation, electromagnetic stirring, and the oxide content is less, which can withstand greater contact pressure stress and also withstand higher pressure. Large and highly variable tensile stress, after heat treatment, the raceway hardness of the shaft is 58-62HRC. If the shaft of the magnetic pump has cracks or heavy wear on the surface, which will affect the strength of the shaft of the centrifugal pump, a new shaft should be replaced. If the shaft of the magnetic pump is slightly bent or slightly worn, the hook, etc., should be repaired.
What are the repair methods for the shaft of the magnetic pump?
1. Repair of the magnetic pump shaft thread: when the thread damage at the end of the pump shaft is minor, the damaged thread can be repaired with a mixed file and continue to be used. If the damage is serious, first turn the pump shaft end small, then press a bushing, and carve threads on the bushing; electric and gas welding can also be used to weld the pump shaft end threads, and then turn the threads.
2. Magnetic pump journal hook and repair after wear: the pump shaft journal using sliding bearing, due to poor lubrication or lubricating oil brought in iron filings, sand, etc., the pump shaft journal is scratched or worn out groove marks, rubber The journal wear at the guide bearing, etc., is generally repaired by plating, copper plating, and stainless steel plating, and then processed into a standard diameter by turning or grinding.
3. Repair of the bending of the pump shaft of the acid and alkali resistant magnetic pump: For the pump shaft with a smaller diameter, a copper sheet can be placed at the bending place, and be struck and straightened with a hand hammer; for the pump shaft with a larger diameter and less serious bending, it can be corrected with a screw device alignment.
4. Repair of the keyway of the magnetic pump: If the surface of the keyway is rough and the damage is not serious, it can be repaired with a file. If the damage is heavy, the old groove can be repaired by welding, and a new groove can be opened elsewhere, but the pump shaft with larger transmission power must be replaced with a new shaft.
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