The rotor shaft plays a core role in the motor, acting as a mediating element. During the long-term operation of the motor, the rotor shaft experiences significant stress, which can lead to wear over time. Next, I will provide a detailed introduction to the manifestations of rotor shaft wear and the methods for its repair.

The manifestations of wear are mainly categorized into adhesive wear, abrasive wear, fatigue wear, and micro-kinetic wear. Although metals are hard, they have poor yielding properties, poor impact resistance, and poor fatigue resistance, which makes it easy for bearing positions and bearing chambers to wear.

Currently, the common methods for repairing worn motor shafts in China include sleeve fitting, scoring, surfacing, brush plating, thermal spraying, and laser cladding. While the emergence of these repair techniques has promoted technological and process improvements, they are also limited by complex process conditions and on-site environments, especially when dealing with emergency equipment issues that are large, complex to dismantle, and so on.