Article Back

LASER CUTTING OF RARE-EARTH NDFEB PERMANENT MAGNETS

1 BELYAEV Igor
Co-authors:
1 SEROV Dmitry 1 KIREEV Andrey 2 KUTEPOV Alexandr 3 LYUKHTER Alexandr 3 ZHOKIN Alexey 3 RYKOV Vladimir 4 KOLCHUGINA Natalia
Institutions:
1 Vladimir State University named after A.G. and N.G. Stoletovs, Vladimir, Russian Federation, belyaev-iv54@yandex.ru
2 JSC RPA “Magneton”, Vladimir, Russia, sales@tdmagneton.ru
3 Vladimir Engineering Center for the Use of Laser Technologies in Mechanical Engineering, 3699137@gmail.com
4 Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia, imet@ultra.imet.ac.ru
Conference:
29th International Conference on Metallurgy and Materials, Brno, Czech Republic, EU, May 20 - 22, 2020
Proceedings:
Proceedings 29th International Conference on Metallurgy and Materials
Pages:
523-526
ISBN:
978-80-87294-97-0
ISSN:
2694-9296
DOI:
https://doi.org/10.37904/metal.2020.3514
Published:
27th July 2020
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
613 views / 458 downloads
View Full-text Download PDF
Abstract

The possibility of laser cutting of rare-earth NdFeB permanent magnets is studied. An industrial Navigator KS-5VDM1-3 laser complex (VNITER, Russia) is used. Blanks of sintered permanent magnets intended for cutting were 10, 4.5, 3, and 2 mm thick. The cutting was performed in air. The used cutting conditions ensure the cutting of a blank for one pass. The cutting rate was varied in wide range. The magnetic properties of studied blanks were determined via measuring the magnetization reversal curves recorded before and after cutting. Changes in the alloy structure during laser cutting were estimated by X-ray diffraction analysis. The decrease in the magnetic properties during laser cutting was found to depend on the blank thickness. The thinner the magnet blank, the lower the decrease in its magnetic properties. The causes for the decrease in the magnetic properties of NdFeB permanent magnet blanks during laser cutting are local changing the phase composition of alloy and decrease in the degree of texture of blanks. The losses of magnetic properties can be minimized by optimization of laser cutting conditions.

Keywords: Rare-earth magnets, laser cutting, phase composition, magnetic properties

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Scroll to Top