Development of a System for Electromagnetic Stirring of Liquid Steel in Molds of Billet and Bloom CCMS

Sivak, B. A.; Шахов, С. И.; Вдовин, К. Н.; Rogachikov, Yu. M.; Kerimov, R. I.

doi:10.1007/s11015-020-00909-w

Cited by 19 publications

(10 citation statements)

References 4 publications

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“…[4][5][6] The rotating electromagnetic force generated by an alternating magnetic field drives the molten steel in the billet mold to form a swirling flow. [7,8] The swirling flow improves heat transfer at the solidification front and the equiaxed crystal ratio by breaking the columnar crystals. [9][10][11] Meanwhile, the quality of the billet is controlled well by the swirling flow in the mold.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mold Electromagnetic Stirring on Metallurgical Behavior in Ultrahigh Speed Continuous Casting Billet Mold

Zhang

et al. 2023

steel research int.

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A three‐dimensional model of fluid flow, heat transfer, solidification, and inclusion motion in billet mold at ultrahigh casting speed under electromagnetic field is developed. The low Reynolds number k–ε model coupled with electromagnetic model and Lagrangian discrete phase model is used to investigate the flow field, temperature field, solidification, and inclusions transport under different current intensities. The results show that mold electromagnetic stirring (M‐EMS) significantly alters the flow pattern of molten steel. The impact depth of the molten steel decreases as the stirring current intensity increases, and the horizontal swirl intensities of the molten steel increase with the stirring current intensity. As the current intensity increases from 500 to 700 A, the impact depth decreases from 0.637 to 0.575 m and the maximum tangential velocity increases from 0.477 to 0.898 m s−1. When the stirring current is intense, the flow of molten steel near the mold exit is reversed, and the molten steel flows asymmetrically and unsteadily. The M‐EMS effectively improves the transverse heat transfer of the molten steel in the mold, contributing to the dissipation of the molten steel superheat and the growth of the solidified shell. In addition, the removal ratio of the inclusions is improved significantly.

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Section: Introductionmentioning

confidence: 99%

Effect of Mold Electromagnetic Stirring on Metallurgical Behavior in Ultrahigh Speed Continuous Casting Billet Mold

Zhang

et al. 2023

steel research int.

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“…SLM allows to produce not only demonstration samples and product models, but also functional finished products by adding material layer by layer and bonding particles and layers to each other using well-known methods. Our studies of samples produced using this technology have shown that, in terms of their physical and mechanical properties, they are not inferior to parts made using traditional casting technologies [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Additive Technology Methods for Manufacturing Permanent Magnets

et al. 2021

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The paper presents the results of studying the possibility of using the selective laser melting method for production of permanent magnets. This process allows to manufacture not only product models and prototypes, but also finished functional products by adding material layer by layer and bonding particles and layers to each other. We have considered the application areas of selective laser melting (SLM) based on powders obtained by different methods for the study. In addition, we have analyzed the traditional magnetic alloy casting technology, studied magnetic materials, and compared the powder magnet properties with standard data. We have found that the parameters of powders obtained by gas atomization are qualitatively superior to those of powders obtained using other methods, whereas the resulting magnets meet the requirements for magnets. Based on the 25Kh15KA alloy powder atomized by gas atomization, a SLM plant allows to manufacture permanent magnets with a material density of 7.59–7.55 g/cu.cm, which meets the requirements recommended by the State Standard GOST 24897-81, and to obtain the magnet properties that can be achieved using traditional metallurgical technologies.

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“…Any production system [4][5][6][7][8][9][10][11][12][13] has a multilevel hierarchical structure with hierarchical subordination relations defined. The system structure is considered as a set of production facilities united by diverse engineering, technological, economic, and administrative ties.…”

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confidence: 99%

Systematization of the Mineral Raw Material Waste Recycling Process

2021

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The paper considers a system for optimizing the recycling process of mineral raw material waste in terms of the target function, which takes into account economic, technological, and environmental criteria. We have suggested a structural model of the production process of mineral raw material recycling using cost flows. Based on the analysis of this model, we concluded on the need to develop new methods for assessing and choosing the parameters of the equipment used, including specific performance criteria to assess the degree of sophistication of the systems under study.

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Development of a System for Electromagnetic Stirring of Liquid Steel in Molds of Billet and Bloom CCMS

Cited by 19 publications

References 4 publications

Effect of Mold Electromagnetic Stirring on Metallurgical Behavior in Ultrahigh Speed Continuous Casting Billet Mold

Effect of Mold Electromagnetic Stirring on Metallurgical Behavior in Ultrahigh Speed Continuous Casting Billet Mold

Additive Technology Methods for Manufacturing Permanent Magnets

Systematization of the Mineral Raw Material Waste Recycling Process

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