Bonding varnish (Backlack) enables the production of lamination stacks with the highest precision. The stack can be handled like a machined part. Compared to interlocking and welding, bonding has no shortcuts between the single sheets. Better magnetic properties and lower losses are the result. Stacks joined by bonding varnish are produced in the highest quality for small and medium series. To make large series viable synchronization between stamping and stacking/bonding is necessary. The proposed combined system between a highspeed press and modular bonding stations can produce up to 100,000 bonded rotors and stator stacks annually. The modularity sets flexibility to adapt to different part sizes, volumes, and ramp-up scenarios. So, investments can be aligned with the production volumes. Also, digital solutions are available, enabling traceability of the process, process data archives, data analysis, and applications for process improvements.

Learn more about how:

• Bonding varnish eliminates shortcuts between sheets, improving magnetic properties and reducing losses
• A synchronized system of high-speed presses and modular bonding stations enables up to 100,000 bonded stacks annually
• Modular design adapts to various production needs, with digital solutions ensuring traceability and process optimization