An empirical method for on-line repair of generator rotor shaft wear
Bearing on the drive side of the generator andRotor shaftThere is an interference fit between them. Due to the material problem of the shaft itself and the process of repeatedly replacing the bearing, the dimensional accuracy of the rotor shaft will be slightly worn. In addition, metal fatigue of equipment may also be caused by uninterrupted operation throughout the year. The gap affects the accuracy of the fit. Once the gap is created and the bearing lubrication is insufficient, the wear of the bearing position will be very fast. The axial fixing method of the part is fixed by an elastic fixing ring. If the journal is worn, it is usually accompanied by axial wear. will eventually cause the device to stop unexpectedly.
Generator rotor shaft wear repair method steps:
1.After measuring the size of the shoulder of the worn rotor shaft of the generator, complete the repair tool.
2.There was no acetylene oxygen at the site, and a gasoline blowtorch was used to bake the oil and heat the journal surface until there were no sparks.
3.After field observation and measurement, the axial wear of the rear shoulder is caused by the wear of the bearing position. The wear width is about4mm, and the processing thickness is4mmof metal pads.
4.After grinding and deepening the worn part of the journal with the grinding wheel of the grinder, empty the test tool and use it.SD7101Hmaterial, and use the repair tools to fix the dimensions.
5.The tool was heated and cured using a torch, and then heated and cured using an electric furnace.
6.After removing the tool, measure the dimension value to meet the requirements of interference fit.
7.Sand the surface of the repair material with sandpaper to clean and clean the residual release agent on the surface.
8.Apply a thin coating to the bearing surfaceSD7101HMaterial, wipe the oil stains on the inner ring with cotton cloth before installing the bearing, and then useSD7000The release agent heats the bearing.
Wear repair of generator rotor shaftNote:
The use of tooling maintenance technology requires high tooling production. High-quality tools can better ensure the concentricity of the shaft after repair. For detailed information on how to measure data collection data, you need to consult in detailThree andTechnical Engineer.
Rotor shaft, rotating shaft
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2024-01-02
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