Emergency repair of rotor journal and end cap bearing chamber wear
The specific methods and steps are as follows:
1. Wash the area with ethanol or gasoline repeatedly.
2. The ternary nylon ethanol solution is heated to a transparent liquid, and the liquid is thinly applied to the worn portion with a small brush. For a slightly larger amount of wear, the heating time may be appropriately extended to make the solution thicker and then coated. Generally, it needs to be applied several times to reach the required thickness. After the first application, it should be placed for about 3 minutes, and it can be dried by itself. When it is not sticky, it can be applied for the second time.
3, dry after coating, can be heated (temperature does not exceed 80 ° C, time 0.5-1 hours), it can also let it dry naturally (at room temperature 20 ° C, placed in a ventilated place for about 36 hours).
4, the wear amount is less than 0.10mm, after drying, can be used. If the wear amount is greater than 0.10mm, in order to ensure the concentricity of the stator and the rotor during the assembly of the motor, it is necessary to perform turning after coating. During turning (if the original bearing outer ring and inner ring size are within the tolerance range), the repaired end cap bearing chamber can be processed according to P6. If the journal is repaired, it can be processed according to r6.
After the coated nylon solution is completely dried, it has sufficient adhesion and hardness, which can fully guarantee the requirements of the motor assembly.
This method is only suitable for cases where the amount of wear is not large, only a few tenths of a millimeter.
