The Role of Slag Carryover on the Non-metallic Inclusion Evolution and Magnetic Behavior in Electrical Steel

Kamaraj, Ashok; Murugaiyan, Premkumar; Mandal, G. K.; Roy, Gour Gopal

doi:10.1007/s11663-022-02547-w

Cited by 6 publications

(1 citation statement)

References 36 publications

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“…The quality of finished non-oriented electrical steel is an integral parameter that includes magnetic properties, surface quality (appearance, electrical insulation coating resistance coefficient, adhesion) and other consumer characteristics. One of the most common surface defects is the "oxidation in the form of bands" defect [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Determination the causes of premature destruction of sheet electrical steel

Kovbasiuk¹,

Duriagina²,

Kulyk³

et al. 2022

UJMEMS

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Sheets of electrical steel are produced by hot and cold working by pressure (mainly by rolling). In this case, the load during rolling should be chosen in such a way as not to impair the electrical properties of the steels. Received two sheets of electrical steel from different production batches. One of the sheets of electrical steel is prematurely destroyed at the stage of machining parts for electrical transformers. It has been established that an increased content of phosphorus worsens the characteristics of plasticity, which can complicate the process of pressure treatment in the manufacture of sheet electrical steel. Macrostructural analysis revealed longitudinal lines due to rolling. In places of greatest deformation, perpendicular to the direction of rolling, there are cracks and chipping of the insulating layer. Microstructural analysis showed that the cracks formed in the process of rolling sheet electrical steel propagate to a depth of 1.5–2.0 µm. The presence of linear depressions in the structure of the sheet steel indicates that the critical overload has been exceeded during rolling. The increased microhardness in samples of electrical steel is explained by the increased concentration of macro- and microstructural defects formed during the rolling process. It has been established that the main reasons for the premature destruction of electrical steel sheets are an increased content of harmful impurities and incorrectly selected pressure treatment modes, leading to the formation of macrocracks.

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Section: Introductionmentioning

confidence: 99%

Determination the causes of premature destruction of sheet electrical steel

Kovbasiuk¹,

Duriagina²,

Kulyk³

et al. 2022

UJMEMS

View full text Add to dashboard Cite

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Overview of application of automated SEM/EDS measurements for inclusion characterization in steelmaking

Babu,

Michelic

2024

MetalMat

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The scanning electron microscope equipped with an energy dispersive spectroscopy (SEM/EDS) is considered as a state‐of‐the‐art characterization tool to determine the morphological features and the chemical composition of non‐metallic inclusions in steel. Such a characterization is pivotal to assessing the steel quality, which influences the properties of end products. This paper offers a comprehensive review of the SEM/EDS system, tracing its historical developments and methodological advancements by various research groups which have contributed to non‐metallic inclusion analysis. Then the discussions transition to developments that have matured the SEM/EDS platform. The paper highlights selected examples utilizing the SEM/EDS to examine inclusions across various steel grades and at different stages of the metallurgical process. Finally, latest advancements in integrating machine learning techniques to expedite the analysis process were discussed.

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