1, to ensure that the rotor size meets the standard requirements. Before reconstruction, it is necessary to carefully measure the dimensions of the stator and rotor, especially the key geometric parameters, to ensure that there will be no volume or structural problems due to size mismatch during reconstruction.

2, check the defects and damage. Before modification, all parts of the rotor, especially the poles, windings and bearings, must be checked as comprehensively as possible for wear, deformation, cracks and corrosion. If these problems are found, they need to be fixed.

3. Cleaning and derusting. When the old stator and rotor are renovated, all impurities and deposits must be thoroughly cleaned and removed, especially the easily oxidized metal surface.

4. Conduct a balance test. After the stator and rotor are renovated, it is necessary to carry out balance test to ensure that the rotor will not be unbalanced when rotating at high speed. If imbalance is found, further correction is needed.

5. Apply the correct coating. According to the specific application requirements, the proper coating and protective materials are applied to the old stator and rotor to increase their service life and wear resistance.