The dynamic of cooling of cast iron in the cristllizer in condition of the semi-continuous production process bimetallic band “steel-cast iron”

Lihoshva, V.; Shmatko, A. V.; Савин, В. В.; Savina, L. А.; Tymoshenko, A.

doi:10.1088/1757-899x/656/1/012030

Cited by 4 publications

(3 citation statements)

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“…The connection of the layers by the casting process can be carried out by means of a metallurgical bond [17][18] (liquid with liquid), for example, provided that a more infusible alloy is poured onto a less refractory alloy (steel, poured onto solid cast iron), or diffusion bond (liquid with solid), when pouring back [19][20].…”

Section: Methodsmentioning

confidence: 99%

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Technological Features of the Liquid-Solid State of the Boundary Layer in the Processes of Bimetallic Products

Lykhoshva

Glushkov

Reintal

et al. 2022

MSF

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The hydrodynamic and thermal state in the contact zone of the layers of a bimetallic product obtained by pouring liquid iron onto a solid steel billet, which changes in time and is responsible for the strength of the diffusion joint and the geometric parameters of the transition layer, has been investigated. Simplified analytical dependences, mathematical modeling data and experimental results of the liquid phase existence time in the contact zone based on research of the melt velocities during pouring and changes in the thermal field are presented. It is shown that simplified calculations data coincide in order and are close in values to the calculations of mathematical modeling and experimental data, which makes it possible to use them for preliminary rough estimates by technologists and metallurgists.

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Section: Methodsmentioning

confidence: 99%

“…During the calculation the change of the liquid phase portion with temperature (in the solidusliquidus temperature range) was determined by the dependence presented in the work [19].…”

Section: Workhop Advances In Materials Science IImentioning

confidence: 99%

Technological Features of the Liquid-Solid State of the Boundary Layer in the Processes of Bimetallic Products

Lykhoshva

Glushkov

Reintal

et al. 2022

MSF

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“…Раніше в наших роботах [2,19] показано, що дифузійне з'єднання рідкого металу з твердою підкладкою з більш тугоплавкого сплаву (сталь) можливе лише за суворого дотримання певного температурного режиму. Температура сталевої підкладки повинна відповідати певним вимогам, а саме бути не нижче температури фазового перетворення (Т γ-α ) матеріалу підкладки (конструкційної вуглецевої сталі) і не перевищувати її температуру солідус (Т сол ).…”

Section: нові методи та прогресивні технології литтяunclassified

Technological features of the combined foundry-induction method of producing three-layer castings

Tymoshenko¹,

Lihoshva²,

Shmatko³

et al. 2022

Processy litʹâ

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The technological features of developed casting-induction method for obtaining threelayer «cast iron-steel-cast iron» castings were studied. The specified method consists in the use of induction heating of a steel billet with a high-frequency electromagnetic field in the casting process for obtaining three-layer products. The paper represents mathematical modeling results of temperature fields distribution under the action of electromagnetic fields on a steel workpiece. The main regularities of steel billet temperature changes depending from the current level and heating time have been established. As a result of simulation modeling, the technological parameters of the steel workpiece heating and cooling process were determined, as well as the pouring of the melt during the production of three-layer castings. Obtained dependences between temperature of the poured melt and temperature of the workpiece are necessary to ensure a high-quality connection between the steel inner part and working layer made of cast iron. The results of the experimental testing confirmed the adequacy of the mathematical modeling of the thermal state of the workpiece, as well as the effectiveness of using the developed combined casting-induction method for obtaining three-layer castings. Keywords: induction casting method, induction heating, simulation modeling, three-layer casting, electromagnetic field, melt.

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Numerical investigation and physical modeling for optimisation hydrodynamic processes in continuous casting tundish

Smirnov,

Verzilov,

Semenko

et al. 2023

Metall. Res. Technol.

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The article presents the results of comprehensive studies of hydrodynamic processes and features of single-strand tundish ladles, which can be used for continuous or semicontinuous casting of steel at small metallurgical plants. The results of physical and mathematical modelling of the movement of the melt flows in the tundish using various designs of metal receivers are shown in this article. In addition to this, the article shows how the presence of a stagnant zone between the metal receiver and the right narrow wall of the Tundish increases in time of metal flow into the dispenser zone by an average of 35–60%. It has been established that the position and height of the walls of the metal receiver relative to the axis of the incident jet are very significant for providing a rational picture of the movement of convective flows. When the height of the wall of the metal receiver (from the side of the dispenser) is reduced by 40–60 mm, the zones of increased turbulence may appear in the liquid bath of the tundish in the areas between the metal receiver and the dispenser. The results of evaluating the efficiency of floating non-metallic inclusions in the tundish volume and optimizing the hydrodynamic pattern flows in the central part of the tundish to increase the refining effect by installing a special recess.

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The dynamic of cooling of cast iron in the cristllizer in condition of the semi-continuous production process bimetallic band “steel-cast iron”

Cited by 4 publications

References 0 publications

Technological Features of the Liquid-Solid State of the Boundary Layer in the Processes of Bimetallic Products

Technological Features of the Liquid-Solid State of the Boundary Layer in the Processes of Bimetallic Products

Technological features of the combined foundry-induction method of producing three-layer castings

Numerical investigation and physical modeling for optimisation hydrodynamic processes in continuous casting tundish

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