Study of the processes of subsurface crack formation in a rhombic varietal billet during production in the conditions of a metallurgical micro-mill

Smirnov, A. M.; Ukhin, V.E.; Verzilov, A. P.; Semenko, A.Yu.; Hoida, Danyil; Kulish, Yu.

doi:10.15407/steelcast2020.03.040

Cited by 3 publications

(1 citation statement)

References 8 publications

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“…At the same time, the favorable factors during the formation of Hui-style prints can be increased to have the disks containing single/bilateral cracks connected by means of docking when the artists are drawing their different works to ensure that the radial concentration force P inside can be applied to each area, to complete the detection of infinite steel stress, and to control the strength factors in the formation stage of Hui-style printmaking to promote the operation of artists to be more standardized and analyze the deficiencies in the formation stage of Hui-style printmaking so that the double cracks and single cracks can be more intuitively shown (as shown in Figure 8 ) [ 19 , 20 ].…”

Section: Methodsmentioning

confidence: 99%

[Retracted] Analysis of the Natural Conditions and Geographical Factors of the Formation of Hui‐Style Prints

2022

Journal of Environmental and Public Health

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In order to analyze the natural conditions and geographical factors of the formation of Hui-style prints, big data analysis technology is brought in, through which more audiences can understand the true meaning of Hui-style printmaking, the internal system of Hui-style printmaking during its operation can be improved, and artists can complete the analysis of natural conditions and geographical factors for the formation of Hui-style prints by means of empirical analysis. In this way, during the implementation of artistic acts, the benefits of the city and even the society can be increased, and the social and economic benefits can be improved accordingly and involved in information management systems directionally, and the natural conditions and geographical factors related to the formation of Hui-style prints can be deeply analyzed, so as to ensure that the formation of Hui-style prints has a social and economic promotion.

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Section: Methodsmentioning

confidence: 99%

[Retracted] Analysis of the Natural Conditions and Geographical Factors of the Formation of Hui‐Style Prints

2022

Journal of Environmental and Public Health

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Simulation of the fluid flow in continuous casting copper slab mold for different SEN design

Smirnov,

Ukhin,

Semiriagin

et al. 2024

Metall. Res. Technol.

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The quality of continuously cast slabs largely depends on the processes taking place in the mold. In continuous casting of copper and its alloys the solidification process is almost completed within it. This paper presents a comprehensive optimization of the submerged entry nozzle design by combining physical and mathematical modeling with further comparison of obtained results with the actual process. The article studies the critical features of hydrodynamic processes in copper slab by physical and mathematical modeling during continuous casting. To ensure the efficiency of liquid pool homogenization, it seems appropriate to direct some metal upwards through openings in the SEN to the liquid meniscus. The optimal configuration of the SEN is the one where 35% of the liquid flows upwards to heat the melt meniscus and slab upper corner zones and 65% of liquid metal moves downward to the liquid pool bottom.

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Some specifics of the billet open and submerged stream casting

Smirnov,

Ukhin,

Semiriagin

et al. 2023

Met. lit’e Ukr.

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Experimental series of steel casting were carried out to determine the effect of the continuous casting method on the fre-quency of defects formation in billets. At the same time, the 125x125 mm square billets production was carried out on a six-strand caster with casting speeds of 2.8-4.3 m/min. In the process of research, a series of 5 melts of steel 60 (St60) was initially casted with an open stream. After that, using the same molds, 5 melts of steel 40X were sequentially casted with a submerged stream. As a result of an industrial experiment, it was found that because of the open stream continuous casting the number of rhomboidal billets was 4.5 %. In the case of using the submerged stream technology defects in the billet shape were not observed. The use of the "stopper rod” — "tundish nozzle" — "submerged entry nozzle" system allows to control metal consumption during casting more accurate and timelier in automatic mode without changing the billet casting speed. At the same time, the position of the metal level in the mold is constantly ensured, which most accurately considers the features of the billet solid shell formation over the entire mold length at the current casting speed. The absence of the need to control the casting speed by the level of metal in the tundish makes it possible to maintain the optimal amount of melt in it, which sta-bilizes the casting temperature. The submerged casting prevents bubbling at the phase boundary in the mold and provides the possibility of a significant increase in the nozzle inner diameter (compared to the open stream) that reduces the rate of its clogging with corundum deposits several times. In addition, submerged casting allows the use of special mold powders, which improve the surface quality of the billets. It is possible to additionally improve billets quality using electromagnetic stirring of liquid steel during continuous casting.

show abstract

Study of the processes of subsurface crack formation in a rhombic varietal billet during production in the conditions of a metallurgical micro-mill

Cited by 3 publications

References 8 publications

[Retracted] Analysis of the Natural Conditions and Geographical Factors of the Formation of Hui‐Style Prints

[Retracted] Analysis of the Natural Conditions and Geographical Factors of the Formation of Hui‐Style Prints

Simulation of the fluid flow in continuous casting copper slab mold for different SEN design

Some specifics of the billet open and submerged stream casting

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