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6863 |
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Tuesday, March 09, 2021, Hall 1 3:10 PM Innovations with Electron Beam |
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Pulsed electron beam spot welding of non-oriented electrical steel sheets |
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Thomas Krichel* / Institut für Schweißtechnik und Fügetechnik (ISF) der RWTH Aachen, Deutschland Stefan Gach / Welding and Joining Institute (ISF) RWTH - Aachen University , Germany Timm Evers/ Welding and Joining Institute (ISF) RWTH - Aachen University , Germany Aleksej Senger/ Welding and Joining Institute (ISF) RWTH - Aachen University , Germany Simon Olschok/ Welding and Joining Institute (ISF) RWTH - Aachen University , Germany Uwe Reisgen/ Welding and Joining Institute (ISF) RWTH - Aachen University , Germany |
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Today we find electric motors in almost every area of production and consumption. Due to their ever-increasing number and distribution, the efficiency of future electric motors is an important part of global energy and resource management. The efficiency of electric motors depends strongly on the remagnetizability of their iron cores. Negative effects on the remagnetizability of the iron cores, which are made up of many individual layers of electrical steel sheets, and thus on the efficiency of the electric motor, include short circuits, grain size distribution and residual stress. Common methods for joining the individual laminations to form an iron core are TIG-welding, punching, riveting or gluing. In this paper, pulsed electron beam welding is to be used to demonstrate an alternative strategy for joining iron cores made of non-oriented electrical steel sheets with an Si-content of 3.7% (M280-30AP). |