Study on Influence of Microstructure and Thermal Treatment on Magnetic Losses from Non-Oriented Silicon Electrical Steel

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Non/oriented electrical sheets are sheets tailored to produce specific properties and are produced from Fe-Si or Fe-Si-Al alloys. Non-oriented electrical steel sheets are incorporated into a wide range of equipment, from the simplest domestic appliances to hybrid and pure electric vehicles. In studying about the magnetic, there have a lot of method can be used for the different experiment requirement such as measuring magnetic flux, nominal loss and other objectives.

During electrical steel processing, there are usually small variations in both chemical composition and thickness in the hot-rolled material that may lead to different magnetic properties for the same steel grade. Therefore, it is of great importance to know the effects of such variations on the final microstructure and magnetic properties of these steels. The purpose of this work was to study microstructural changes of the bands investigated during processing occurring siliceous strips with non-oriented grains. The second aim was to study the influence of grain size on the total magnetic losses at 1.0 T and 1.5 T. Materials 10 rolls intended to be processed into quality electrical steel M400-50A (according to EN 100027-1) were analyzed with metallographic microscope Neophet 32 and the magnetic characteristics was made with Epstein frame according IEC 6040/4-2, with an exiting current frequency of 50Hz at 1.5T and 1.0T induction after aging treatment of 225°C for 24 hours. Sample for light microscopy observation were prepared by polishing and etching in 5% Nital.

[1] Rehman S.- Solar radiation over Saudi Arabia and comparisons with empirical models. Energy 1998; 23(12). pp. 1077 – 1082.

[2] I. Petryshynetsa. F. Kovaca. V. Stoykaa and J. Borutab. Influence of Microstructure Evolution on the Coercive Forces in Low Silicon Non-Oriented Steels. 14th Czech and Slovak Conference on Magnetism. Košice. Slovakia. July 6–9. 2010. Vol. 118 (2010) Acta Physica Polonica a No. 5.

[3] Lyudkovsky. G. Effect of Antimony on Recrystalization Behaviour and Magnetic Properties of a Nonoriented Silicon Steel. Metallurgical and Materials Transaction A. Vol. 15. No.2. February 1984.

[4] J. Hunady. M. Cernik. E. J. Hilinski. M. Predmersky. A. Magurova. Influence of Chemistry and Hot Rolling Conditions on High Permeability Non-Grain Oriented Silicon Steel. Journal of Metals. Materials and Minerals. Vol.15 No.2 pp.17-23. 2005.

[5] Darja Steiner Petrovic. Non-oriented electrical steel sheets. ISSN 1580-2949 MTAEC9. 44(6)317(2010).

[6] T. Shimazu. M. Shiozaki. K.J. Kawasaki. J. Magn. Magn. Mater. 133. 147 1994.

[7] R.H. Heyer. D.E. McCabe. J.A. Elias. Flat Rolled Products. Interscience New York 1962. p. 29.

[8] F.E. Werner. R.I. Jaffee. J. Mat. Eng. Perf. 1 (1992) 227.

[9] M.F. de Campos et al. The optimum grain size for minimizing energy losses in iron. Journal of Magnetism and Magnetic Materials 301 (2006) 94–99.

[10] C.O. Rusănescu. M. Rusănescu. F.V.Anghelina – Variation of mechanical properties with temperature for an ecomaterial; Optoelectronics and advanced materials – rapid communications. Vol. 7. No. 11-12. 2013. p. 947-951.

[11] E. Cazimirovici. ş.a.. Machinery and processes in steel. Didactic and Pedagogic Publishing. Bucharest 1974.

[12] A. Nanu. Materials technology. Didactic and Pedagogic Publishing. Bucharest. 1977.

[13] C.O. Rusănescu. C. Jinescu. G. Paraschiv. St. Biris. M. Rusănescu. O. Ghermec-Influence of the Nb. V and Mo Elements on the Ecological Micro-alloyed Steel Properties. Revista de chimie 66. no. 5 (2015): 754-757. ISSN: 0034-7752.

[14] Nicolae Cănănău. Victor Petrescu. Plastic deformation technology. Macarie Publisher. Târgovişte. 2002.

[15] Erdemir România SRL/Working procedure for cold rolling.

[16] C.O. Rusănescu. M. Rusănescu. T. Iordănescu. F. V. Anghelina – Mathematical relation ships between alloying elements and technological deformability indexes. Journal of optoelectronics and advanced materials. Vol. 15. No. 7-8. 2013. p. 718-723.

[17] F.V.Anghelina. V. Bratu. I. N. Popescu. Estimating the stacking faults of high alloyed steels. pp. 7 - 11. The Scientific Bulletin of Valahia University. Materials Science and Mechanics. Nr. 8 (year 11). ISSN 1844-1076. 2013.

[18] C. O. Rusănescu. M. Rusănescu. F. V. Anghelina. V. Bratu - The influence of the micro-alloying elements on physical and structural characteristics of the some steel destined for manufacturing the oil pipes. Romanian Reports in Physics. Vol. 68. No. 1. P. 278–293. 2016. ISSN: 1221-1451; eISSN: 1841-8759.

[19] F.V.Anghelina. Correlation Between Primary Recrystallization Texture And Goss Texture For The Electrotechnical Steel. Magazine JOSA-Journal of Science and Arts. Nr. 1 /2014. ISSN 1844-9581. Ed. Bibliotheca.Targoviste.

[20] C. O. Rusănescu. M. Rusănescu - The influence of the residual copper on the pipes steel hot plasticity according to environmental requirements. Journal of Mining and Metallurgy. Section B: Metallurgy; J. Min. Metall. Sect. BMetall. 49 (3) B (2013) 353 – 356; ISSN: 1450-5339.

[21] R.D. Findlay. “Losses Due to Rotational Flux in Three Phase Induction Motors.” IEEE Transactions on Energy Conversion. Vol. 9. No. 3. September 1994.

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