Low Loss Electrical Steel Packages Manufactured By Screen Printing

Screen printing offers great potential to print electrical steel sheets directly in desired shapes with exceptional low thickness (d < 350 μm) without typical constraints regarding materials ductility. Therefore, current demands in electric motor design can by addressed with the manufacturing of very thin sheets and high alloying contents. Furthermore, materials waste is neglectable using screen printing which is a crucial benefit as electrical steel is already a critical raw material. In this contribution, additive manufacturing of electrical motor components from isolated electrical steel sheets will be shown. Multi-material printing of metal and ceramic is used to shorten the manufacturing process avoiding elaborate multistep packaging processes and negative influence of mechanical processing of each electrical steel sheet. Additionally, the effects of the powder properties on the magnetic characteristics will be elucidated.