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

PROSPECTS FOR APPLYING LASER-MECHANICAL METHODS TO THE IMPROVEMENT OF THE PHYSICAL PROPERTIES OF TRANSFORMER STEEL

The influence of the (110) [001] edge crystallographic textures on the prospects of reducing magnetic losses in local laser processing, mechanical scribing and local bending, solving the problem of improving the functional characteristics of Fe–3 % Si anisotropic magnets and amorphous alloys, is investigated. It is shown that the complex effect of laser treatment and subsequent thermo magnetic treatment in an alternating magnetic field makes it possible to reduce the magnetic losses of P_1.7/50 in steels of higher grades with an edge texture close to the optimal one (grade 3409, B₈₀₀ = 1.93 T) by 14–18 % and 18–26 % in a thin amorphous ribbon of the Fe₈₁Si₇B₁₂ alloy.

Acknowledgments: The work was done on the topic "Magnet" № 01201463328, in part by the project of UrO № 15-17-2-53.

References:

1. Starodubtsev Yu.N. Magnitomyagkie Materialy [Soft Magnetic Materials: Encyclopaedic hand-book]. Moscow, Tekhnosfera Publ., 2011, 659 p. (In Russian).
2. Ichiyama T. Structure and control of magnetic domain in grain-oriented silicon steel. Journal of the Iron and Steel Institute of Japan, 1983, vol. 69, iss. 8, рp. 895–902.
3. Stal elektrotekhnicheskaya kholodnokatanaya anizotropnaya tonkolistovaya. GOST 21427.1-83 [Cold-rolled anisotropic electrical-sheet steel. Specifications]. (In Russian).
4. Pudov V.I., Dragoshanskii Yu.N. Promising applications of amorphous crystalline coatings for soft magnetic alloys. Uprochnyayushchie Tekhnologii i Pokrytiya, 2013, iss. 8, pp. 44–48. (In Russian).
5. Dragoshanskii Yu.N., Pudov V.I. Improving the magnetic structure and properties of soft magnetic alloys by modification of their surface. Fizika i Khimiya Obrabotki Materialov, 2013, no. 3, pp. 48–52. (In Russian).
6. Dragoshanskii Yu.N., Pudov V.I., Karenina L.S. Electrical steel domain optimization and magnetic loss reduction by active coating and laser treatment. Izvestiya RAN. Seriya Fizicheskaya, 2013, vol. 77, iss. 10, рр. 1286–1288. (In Russian).
7. Dragoshanskii Yu.N., Pudov V.I. Physical basis for improving the electromagnetic properties of soft magnetic materials. In: Modern methods and technologies for the creation and processing of materials: IX International Scientific and Technical Conference, Minsk, September 19–22, 2014, Minsk, FTI NAN Belarusi Publ., 2014, pp. 137–144. (In Russian).
8. Pudov V.I., Dragoshanskii Yu.N. Method of manufacturing anisotropic electrical steel. RF Patent 2569260. (In Russian).
9. Dragoshanskii Yu.N., Pudov V.I. Formation of arranged defects and improvement of the magnetic properties of soft magnetic materials with different magnetic texture. In: Modern Methods and Technologies for the Creation and Processing of Materials: IX International Scientific and Technical Conference, Minsk, September 14–16, 2016, FTI NAN Belarusi Publ., 2016, pp. 68–73. (In Russian).
10. Dragoshanskii Yu.N. Optimization of the domain structure and reduction of magnetic losses in anisotropic electric steels and alloys. In: Magnetizm Perekhodnykh Metallov i Splavov [Magnetism of Transition Metals and Alloys, ed. Yu.A. Izyumov]. Ekaterinburg, UB RAS Publ., 2000, рр. 146–157. (In Russian).
11. Dragoshanskii Yu.N., Pudov V.I. Influence of laser processing and magnetically active inorganic coatings on the dynamic magnetic properties of soft-magnetic materials. Inorganic Materials, 2013, vol. 49, iss. 7, pp. 668–675. DOI: 10.1134/S0020168513070029

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