Accelerate the solvent evaporation and oxidation of the paint, and initially finalize the shape. The first drying process can be completed only after ensuring that the insulation resistance is above 2MΩ.
5. Second dip: dip temperature 60-80℃
To increase the thickness of the paint film, the viscosity of the paint should be larger, usually 30-38s
The standard for measuring the viscosity of insulating paint is generally based on 20°C. Therefore, when measuring the viscosity, appropriate adjustments should be made according to the temperature of the paint.
6. The second time of dripping paint, the method is the same as the first time.
7. Second drying: After the paint dipping is completed, bake the motor at 130℃, medium and high temperature 80-160℃ for 8-10H, high temperature 180-280℃ for 16-18H
The drying time is lengthened, and the test can only be completed after the insulation resistance value is stable (after baking, the interphase insulation between the motor and the ground must be above 1.5MΩ to be considered qualified). Class B insulation: The temperature in the box is about 130°C. For small and medium power motors, it needs Temperature 80℃, time 2 hours. After dipping, bake the motor at 130℃, medium high temperature 80-160℃ time 8-10H, high temperature 180-280℃ time 16-18H
Note: According to different insulation levels, the paint dipping steps can be changed. Motors with EB-level insulation requirements can undergo a paint dipping process.
