Magnetic losses reduction in grain oriented silicon steel by pulse and continuous fiber laser processing

Petryshynets, Ivan; Kováč, František; Puchý, Viktor; Šebek, Martin; Füzer, J.; Kollář, P.

doi:10.1063/1.4994191

Cited by 12 publications

(11 citation statements)

References 14 publications

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“…This compressive stress results from the thermal shock at the fast heated and cooled zones due to the laser-irradiation [34,35]. That is, since the region where compressive stress appears makes magnetoelastic energy increase, the supplementary domains are stabilized in the laser-irradiated lines, thereby generating complex domain structure which has a large number of domains in the vicinity of laser- Fig.…”

Section: Resultsmentioning

confidence: 99%

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Visualization of Magnetic Domains in Electrical Steel Using High-Resolution Dark-Field Imaging

Kim¹,

Kim²,

Hussey³

et al. 2019

Korean J. Met. Mater.

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Electrical steel is a soft magnetic steel material used in electric devices such as transformers and motors. The performance of these electric devices is primarily related to the magnetic properties of electrical steel, and the assessment of the magnetic properties of electrical steel has been considered an important topic. We use neutron grating interferometry, which is an imaging technique for visualizing the magnetic domain of electrical steel as the evaluation of magnetic properties. The dark-field image provided by neutron grating interferometry shows a sensitive contrast with respect to the magnetic domain of electrical steel due to the small angle neutron scattering generated at the domain wall. The Talbot-Lau interferometer was installed, and the feasibility test of high-resolution dark-field imaging was conducted at cold neutron imaging beamline of the NIST Center for Neutron Research. The dark-field image of electrical steel was compared with the magnetic domain image observed by the Bitter pattern based on the magnetic powder method to prove the validity of neutron grating interferometry. The dark-field image visualizes the magnetic domains of electrical steel, more detailed domain walls regardless of laser-irradiated lines than Bitter pattern result.

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Section: Resultsmentioning

confidence: 99%

“…irradiated line [34]. The complex domain depends on the laser energy, and the laser-irradiation with higher energy creates a more complex domain with many domains [36].…”

Section: Resultsmentioning

confidence: 99%

Visualization of Magnetic Domains in Electrical Steel Using High-Resolution Dark-Field Imaging

Kim¹,

Kim²,

Hussey³

et al. 2019

Korean J. Met. Mater.

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“…Laser welding showed good results in the geometric measurement, and as per application, it is seen as a future alternative to conventional stacking technologies. The energy of laser beam induces thermal shock, which combined with the correct density of scribe lines, decreases the core losses [12][13]. However, the measurement of the electromagnetic properties reveals a higher increase in power loss on stacks produced from laser cut sheets over the sticking of sheets.…”

Section: Introductionmentioning

confidence: 99%

“…Quantitative texture analysis using orientation distribution function (ODF) is used since limited tools for an optimum texture control are available [26]. It has also been reported that a significant reduction in total core losses can be achieved by controlling and reducing the dynamic losses as compared to static losses [13][14].…”

Section: Introductionmentioning

confidence: 99%

Influence of laser and tungsten inert gas arc welding on magnetic properties of AISI M‐43, and M‐47 grade cold‐rolled non‐oriented electrical steel

Dharmik

Lautre

2022

Materialwissenschaft Werkst

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The magnetic properties and core losses of cold-rolled non-oriented electrical steel are influenced by gas tungsten arc, and laser welding. Investigations are carried out on the toroidal core sample welded on six sides around the outer periphery for estimating the variation in magnetic properties by increasing magnetic flux density and grain size. The percentage increase of power loss density in gas tungsten arc for M-43 grade (M-43-TIG) and laser-welded core samples for M-43 grade (M-43-LB) were 24.7 % and 11.86 %, whereas 18.43 % (M-47-TIG), and 4.9 % (M-47-LB), respectively. A significant decrease in permeability of about 55.39 % and 53.57 % was experienced in M-43-TIG and M-43-LB, respectively. However, in M-47 grade, the decrease was more for M-47-TIG (52.58 %) than the M-47-LB (39.52 %) welded sample when tested at 1.5 T. All the parameters investigated are compared with sticking, non-welded core sample.Keywords: cold-rolled / non-oriented / electrical steel / magnetic properties / welding / laser Die magnetischen Eigenschaften und Kernverluste von kaltgewalztem, nicht kornorientiertem Elektroband werden durch Wolframinertgas-Lichtbogen-und Laserstrahlschweißen beeinflusst. An der sechsseitig am Außenumfang verschweißten Ringkernprobe wurden Untersuchungen zur Abschätzung der Variation der magnetischen Eigenschaften durch Erhöhung der magnetischen Flussdichte und Korngröße durchgeführt. Die prozentualen Erhöhungen der Leistungsverlustdichten im Wolframinertgas-Lichtbogenschweißen für die Sorte M-43 (M-43-TIG) und laserstrahlgeschweißte Kernproben für die Sorte M-43 (M-43-LB) betrugen 24,7 % und 11,86 % (M-43-TIG), dagegen 18,43 % bzw. 4,9 % (M-43-TIG). Eine signifikante Abnahme der Permeabilität von etwa 55,39 % und 53,57 % wurde bei M-43-TIG bzw. M-43-LB festgestellt. Bei der Güte M-47 war die Abnahme jedoch bei M-47-TIG (52,58 %) stärker als bei der M-47-LB (39,52 %) geschweißten Probe, wenn sie bei 1,5 T getestet wurde. Alle untersuchten Parameter werden mit einer geklebten, nicht geschweißten Kernprobe verglichen.

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“…Various laser processes have been investigated by researchers: Rauscher et al [3] deduced that the use of a pulsed fiber laser on iron silicon plates reduced the loss (average reduction 14.5%) further compared to the use of a continuous CO2 laser (average reduction 12.5%) for the same laser pattern. Similarly, Petryshynets et al [4] compared between the impact of a surface treatment with a pulsed laser regime and a continuous laser regime on grains-oriented Fe(3%wt)Si. They achieved higher loss reduction (up to 38%) using the continuous laser.…”

Section: Introductionmentioning

confidence: 99%

Influence of a Laser Irradiation and Laser Scribing on Magnetic Properties of GO Silicon Steels Sheets Using a Nanosecond Fiber Laser

Nesser¹,

Maloberti²,

Salloum³

et al. 2021

EJEE

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Improving the performance of electrical steels within the magnetic circuits is essential to save energy. The domain refinement through local surface treatment by laser is an effective technique to reduce the iron losses in grain-oriented iron silicon steels. To interpret the mechanism of this technique, we have quantitatively studied the impact of nanosecond pulse laser treatment on the magnetic properties of grain-oriented Fe(3%wt)Si sheets. We measured the total power loss and apparent permeability of the samples using a Single-Sheet Tester (SST). The laser treatment resulted in a loss reduction of up to 24% compared to the average power loss of standard samples at 50 Hz. At mid-induction levels, the reduction was also accompanied by an improvement in apparent permeability. A dynamic magnetic behavior law was used to identify a dynamic property Λ including information on density, surface area and wall mobility and another internal permeability property µ representative of static field and magnetization characteristics. Lastly, we presented the behavior of these properties under different laser treatment.

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Magnetic losses reduction in grain oriented silicon steel by pulse and continuous fiber laser processing

Cited by 12 publications

References 14 publications

Visualization of Magnetic Domains in Electrical Steel Using High-Resolution Dark-Field Imaging

Visualization of Magnetic Domains in Electrical Steel Using High-Resolution Dark-Field Imaging

Influence of laser and tungsten inert gas arc welding on magnetic properties of AISI M‐43, and M‐47 grade cold‐rolled non‐oriented electrical steel

Influence of a Laser Irradiation and Laser Scribing on Magnetic Properties of GO Silicon Steels Sheets Using a Nanosecond Fiber Laser

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