MAGNETIC CHARACTERISTICS OF NON-ORIENTED SILICON IRON STRIPS OBTAINED THROUGH MECHANICAL, LASER, ELECTRICAL DISCHARGE AND WATER JET CUTTING TECHNOLOGIES

Autor/autori: Horia GAVRILĂ, Veronica MĂNESCU (PĂLTÂNEA), Gheorghe PĂLTÂNEA, Gheorghe SCUTARU, Ioan PETER

Abstract: The increase of the asynchronous motors efficiency may be usually made by decreasing the total energy losses in the magnetic circuits. Non-oriented silicon iron (NO Fe-Si) sheets are soft magnetic materials with a nearly isotropic grain texture. They are used in the construction of medium and high energy rotating machines, and in order to obtain a higher efficiency, it is necessary to design their magnetic circuits in a new manner, not only to save energy, but also to avoid overheating. There were analyzed samples of non-oriented silicon iron (NO FeSi) grades, M400-65A and M800-65A. The magnetic properties were determined with a single sheet tester in the range of frequency from 10 ÷ 200 Hz at 1 T peak magnetic polarization. The sheet cutting technologies, applied in this article, are mechanical, laser, water-jet and electro-erosion

Keywords: Non-oriented silicon iron, mechanical cutting, electro-erosion, laser cutting, water cutting, energy losses

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