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 ironmechanical cuttingelectro-erosionlaser cuttingwater cuttingenergy losses
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