A stator is impregnated using the trickling method

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Impregnation methods

Trickling

Clean and effective

The trickle impregnation method offers numerous advantages: lowest resin consumption at a high filling level, a clean, automatic process without dripping and post-cleaning of the components, which is completely monitored, and perfect resin distribution even in narrow areas in the windings. Since trickling is technically complex, it takes a lot of experience and process knowledge to turn a laboratory system into a high-volume machine with a cycle time of less than 60 seconds per component and an availability of more than 95 percent.

Impregnating a stator with the trickle process requires precision and know-how.

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During the impregnation process, the stators or rotors are automatically applied to rotating tool holders and heated. In order to be able to trace the amount of resin applied at any time, the dead weight of each component is determined. The resin is then applied in a specific quantity, both internally and externally, and distributed throughout the coils. The treated components, which constantly rotate around their own axis, are then placed in an oven for curing. Due to the permanent rotation and sophisticated thermal management, rework is avoided.

Some advantages of the impregnation method trickling are the following points:

  • 1C or 2C impregnation
  • Highest quality thanks to precise impregnation
  • No time-consuming rework necessary
  • The grooves are filled to the maximum in the windings
  • Minimal process handling
  • Maximum productivity
  • Resins with or without monomers can be used

Trickling is the most effective method of impregnating electric motor stators and rotors.

Technology Center

Together we can move forward – benefit from our expertise and many years of experience in dispensing technology at our Technology Center. bdtronic brings together specialists with comprehensive knowledge of component and production optimization. Work with us, the leading dispensing equipment manufacturer, to develop the optimal dispensing process for your requirements. Our interdisciplinary team from various specialist disciplines – from chemists with doctorates to engineers and plant mechatronics engineers – works on your applications in our Technology Center.

More than 20 experts in dispensing technology determine the appropriate process parameters in application tests – from prototypes to original components. We produce A, B, and C samples using our in-house technology. We also know the material manufacturers and work closely with them to incorporate further expertise. After extensive testing, we make well-founded recommendations and provide you with a detailed test report containing all the parameters tested.