V. I. Pudov, Yu. N. Dragoshanskii, A. S. Doroshek

EFFICIENCY OF LOCAL DEFORMATION EFFECTS ON THE MAGNETIC STRUCTURE OF CORE ELEMENTS

Prospects for optimizing the domain structure and reducing specific magnetic losses in Fe-Si (110) – elements of multilayer laminated transformer magnetic cores – are considered. The formation of local deformation zones by mechanical scribing decreases the domain size and the eddy-current component of magnetic losses; it directs the magnetic flux in the linear and angular portions of the magnetic cores along the easy axes. The established optimal processing conditions and the subsequent annealing in a magnetic field reduce specific magnetic losses in the magnetic cores by 10-12%.

Acknowledgment: The work was performed within the state assignment on the subjects of Magnet (No. AAAA-A18-118020290129-5) and Diagnostics (No. AAAA-A18-118020690196-3) and supported by UB RAS project No. 18-10-2-8.

References:

2.  1. Nakamura M., Hirose K., Iuchi T., Yamaguchi S., Ichiyama T., Ohya Y. Characteris-tics of  laser irradiated grain oriented  silicon. IEEE Trans. Magn., 1982, vol. 18, no. 6, pp. 1508–1510. DOI: 10.1109/TMAG.1982.1062057.
2. Sato K., Ishida M., Hina E. Heat-proof domain-refined grain-oriented electrical steel. Kawasaki Steel Technical Report, 1998, no. 39, pp. 21–28.
3. Dragoshanskii Yu.N., Pudov V.I., Karenina L.S. Optimizing the domains and reduc-ing the magnetic losses of electrical steel via active coating and laser treatment. Bulletin of the Russian Academy of Sciences: Physics, 2013, vol. 77, no. 10, pp. 1286–1288. DOI: 10.7868/S0367676513100104.
4. Dragoshanskii Yu.N, Pudov V.I., Reutov Yu.J., Doroshek A.S. Perspective of laser-mechanic method used  for impovemet of  physic properties of transformer steel. Diagnostics, Resource and Mechanics of materials and structures, 2017, iss. 6, pp. 48–56. DOI: 10.17804/2410-9908.2017.6.048-056.
5. Dragoshanskii Yu.N., Pudov V.I. An apparatus for optical monitoring of the surfaces of solids. RF Patent 174673, 2017. (In Russian).
6. Bagaev K.I. Estimation of the induction effect on the losses in the magnetic circuit of a transformer in the case of different systems of laminating of the magnetic circuit. Polzunovskiy Vestnik, 2013, no. 4–2, pp. 4–11. (In Russian).
7. Kobylin V.P., Davydov G.I., Afans’ev D.E., Li-Fir-Su Z.P., Sedalishchev U.A., Va-sil’yev P.F. An Analysis of Factors Causing a Growth of No-Load Power Losses in Power Transformers with Cores Made of Anisotropic Steel. Elektrichestvo, 2015, iss. 3, pp. 13–18. (In Russian).
8. Gorkunov E.S., Dragoshanskii Yu.N., Solomein M.N., Barkhatov V.A., Zadvorkin S.M. Investigation of the effects of crystallographic anisotropy and the domain struc-ture of ferromagnets on the parameters of double electromagnetic-acoustic transformation. Russian Journal of Nondestructive Testing, 2005, vol. 41, no. 4, pp. 207–217. DOI: 10.1007/s11181-005-0152-3.
9. Pudov V.I., Dragoshanskii Yu.N. Promising applications of amorphous-crystalline coatings for soft magnetic alloys. Strengthening Technologies and Coatings, 2013, iss. 8, pp. 44–48. (In Russian).
10. Pudov V.I., Dragoshanskii Yu.N. Domain structure and magnetic losses in laminated magnetic circuits upon laser treatment. The Physics of Metals and Metallography, 2015, vol. 116, no. 6, pp. 538–543. DOI: 10.1134/S0031918X15060083.
11. Pudov V.I., Dragoshanskii Yu.N. A method for processing of the laminated core of a core-type transformer. RF patent 2565239, 2015. (In Russian).
12. Pudov V.I., Dragoshanskii Yu.N. Magnetic Domain Structure and Thermal Stabiliza-tion of Laser Treatment Zones in Soft Magnetic Materials. Physics of the Solid State, 2016, vol. 58, no. 2, pp. 258–265. DOI: 10.1134/S1063783416020232. (In Russian).

   

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