Project Details
Projekt
Manufacturing of Electromagnetic Components out of Electrical Steel Sheets
Applicant
Professor Dr.-Ing. Wolfram Volk
Subject Area
Primary Shaping and Reshaping Technology, Additive Manufacturing
Term
from 2014 to 2018
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 218259799
Processing electrical steels to stator and rotor cores of electrical drives results in deteriorated magnetic material properties due to the induced mechanical stresses. Increased electrical losses during operation of the electric motor are the result. Particularly when cutting the electrical steel sheets, the plastic deformation in the area of the cut surface leads to large stresses remaining in the material.In the first phase of the project, the influence of individual shear cutting parameters on the magnetic properties of electrical steels could be demonstrated. However, the effects of individual cutting parameters on the magnetic properties are not independent of one another. They usually influence each other. On the basis of the findings from the first project phase, comprehensive shear cutting strategies must be developed taking into account the requirements for the electrical drive to be produced.Within the framework of the subsequent project it is necessary to secure and expand the findings by means of a further electrical steel alloy with 2.8 wt-% silicon. The analysis of the shear cutting process continues parallel on a numerical as well as on an experimental level. Investigations on electrical steels from the research group-internal and industrial production process ensure the transferability of the results for the industry.Apart from the pure investigation of the magnetic effect of the manufacturing process, the applicability of the results within the development process of electric motors is to be ensured. A consideration of reduced magnetic electromagnetic properties is thereby already possible during the design phase.A comprehensive assurance of the research results is made by means of a demonstrator in the last part of the second phase. It is intended to demonstrate the potential for improving magnetic material properties through the findings of the research group.
DFG Programme
Research Units
Co-Investigator
Dr.-Ing. Roland Golle
