How To Repair The Pump Shaft Of Magnetic Pump

Magnetic pump is a common and widely used pump product. The steel used for magnetic pump bearings is high-carbon chromium bearing steel. Because high-quality bearing steel is smelted through vacuum deoxidation and electromagnetic stirring, the oxide content is less. It can withstand large contact compressive stress and high variable tensile stress at the same time. After heat treatment, the hardness of the shaft raceway is 58-62HRC.

If the pump shaft of the magnetic pump has cracks or heavy wear on the surface, which will affect the strength of the centrifugal pump shaft, a new shaft should be replaced. If the pump shaft is slightly bent or slightly worn, pull hooks, etc., it should be repaired.

1. Magnetic pump journal hook and repair after wear and tear

For pump shaft journals using sliding bearings, due to poor lubrication or lubricating oil brought into iron filings, sand, etc., the pump shaft journals are scratched or worn out, and the journals at the rubber guide bearings are worn, etc. , copper plating, and stainless steel plating for repair, and then processed into standard diameters by turning or grinding.

2. Repair of bent pump shaft of magnetic pump

For pump shafts with smaller diameters, copper sheets can be placed on the bends, and straightened by hammering; for pump shafts with larger diameters and less serious bends, screw correctors can be used to straighten them.

3. Magnetic pump keyway repair

If the surface of the keyway is rough and the damage is not serious, it can be polished with a file. If the damage is serious, 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.

4. Repair of magnetic pump shaft thread

When the thread damage at the end of the pump shaft is light, you can use assorted files to repair the damaged thread and continue to use it. If the damage is serious, first turn the pump shaft end small, then press a bush, and turn the thread on the bush; you can also use electric and gas welding to surfacing welding on the thread of the pump shaft end, and then turn the thread.