The Influence of Slag on Degradation of Tundish Working Lining

Buľko, Branislav; Demeter, Peter; Havran, Juraj

doi:10.12776/ams.v20i3.357

Cited by 4 publications

(6 citation statements)

References 6 publications

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“…To study the flow of steel in a tundish equipped with the "Spheric" impact pad, physical modelling was performed using a scaled-down model at a ratio of 1:3, made of transparent plastic and water as the fluid medium [7,11]. The flow of steel was optimized to promote the removal of inclusions and improve the slagmetal phase interface using the method described in [12,13].…”

Section: Figure 1 "Spheric" Impact Padmentioning

confidence: 99%

“…The residence time of steel particles in the tundish is a crucial factor in achieving highquality flow adjustment [6]. Impact pads have undergone significant development in recent years, with increasingly sophisticated shapes based on mathematical and physical modelling [7][8][9]. The impact pad is typically used in conjunction with dams, weirs, and baffles to prolong steel residence time in the tundish.…”

Section: Introductionmentioning

confidence: 99%

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The Advantages of Application of the Spheric Impact Pad Made From the Advanced Material for This Application

BUĽKO,

DEMETER,

PRIESOL

et al. 2023

METAL Conference Proeedings

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To meet the increasing cleanliness requirements in conticast steel production, innovative solutions must be developed. The tundish, which serves as the final refractory-lined reactor, provides ample space to eliminate inclusions through optimization of the steel flow. The key component of the tundish is the impact pad, which determines the flow pattern of steel and is a crucial element of tundish metallurgy. To prevent the formation of dead zones and slag eyes in the slag layer surrounding the ladle shroud, the optimal steel flow within the tundish must facilitate the removal of inclusions through reactions at the steel-slag interface. Additionally, the flow must prevent excessive erosion of the tundish refractory lining. This study compares the standard impact pad with the spherical impact pad using physical modeling, evaluating the residence time and flow within the tundish at three different casting speeds.

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Section: Figure 1 "Spheric" Impact Padmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Advantages of Application of the Spheric Impact Pad Made From the Advanced Material for This Application

BUĽKO,

DEMETER,

PRIESOL

et al. 2023

METAL Conference Proeedings

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“…In the technical bibliography [22][23][24][25][26] the authors analyse a very similar topic but they deal with different quality types of steel, and the chemical composition of the non-metallic inclusions differs as well, nevertheless the basic principle is the same. In the given specific literature, the authors underlined the increase of the non-metallic inclusions content that occurred after the increase of the steel cast speed Fig.6.…”

Section: Fig 2 Graphical Dependency Between the Present Non-metallicmentioning

confidence: 99%

Impact of Cast Speed on the Occurrence of the Non-Metallic Inclusions in Steel

Rega¹,

Molnár²,

Jusko³

et al. 2016

Acta Metall Slovaca

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<p>This paper deals with the examination of the impact of steel cast speed on the occurrence of the non-metallic inclusions due to the investigation of the individual samples taken at different steel cast speeds. The aim of this paper was to identify and describe the relation between the non-metallic inclusions occurring in the metal and the cast speed variations at the continuous casting machine. The non-metallic inclusions within this investigation were identified by the method (AES) based on the atomic emission spectroscopy that evaluates the occurrence of the determined elements in the metal. This method applies the principle of the light emitting acquired by the high-voltage spark supply. The investigation of the impact of both the technological production parameters, and the casting on the cleanliness of the given absorption quality of steel leads to their optimization, as well as, to total minimization of occurrence of the non-metallic inclusions in the steel volume were studied.</p>

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“…A negative impact on the non-metallic inclusions to steel purity depends on their concentrations, content, types and shapes. It is recommended to avoid big and angular non-metallic inclusions [14][15][16]. The impact of the non-metallic inclusions on commercial properties of steel materials is partially caused by the refinery process and steel casting.…”

Section: Introductionmentioning

confidence: 99%

“…The non-metallic inclusions present in metal are of different origins, e.g. from deoxidation, refractory materials, slag entrainment, casting powders and entrainment of the clogged parts of the submerged entry nozzle into the metal volume [11][12][13][14][15][16]. According to professional literature, during the continuous casting of steel on the casting equipment, casting with stable speeds is preferred.…”

mentioning

confidence: 99%

Impact of Interstitial Aluminium Content on Occurrence of Non-Metallic Inclusions in Steel

Rega¹,

Molnár²,

Šolc³

et al. 2016

Acta Metall Slovaca

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This paper details the study of interstitial aluminium impact on non-metallic inclusion occurrence on the basis of individual samples examination taken during steel production and processing. The aim was to identify and describe the relation between the content of interstitial aluminium in metal volume and the concentration of non-metallic inclusions on Al x O y basis occurring in steel. The identification of the non-metallic inclusions occurring in liquid steel was within this study implemented by the (AES) method based on the atom emission spectrometry evaluating the presence of the respective elements in the metal volume. This method works on a principle of emitted light from the existing source with a high voltage spark. The results of this study indicate a correlation between the interstitial aluminium content and concentrations of non-metallic inclusions on the Al x O y basis.Keywords: steel cleanliness, secondary metallurgy, continuous casting, inclusions in steel 1 Introduction It is necessary to ensure and maintain a high purity of produced steel especially for those types designed for a specific application. Regulation of the non-metallic inclusion content, amount and distribution has an essential impact on the steel purity [1]. Development of packaging materials significantly relates to thin electrolytically tinned sheets, which are nearly irreplaceable in some branches of the packaging sector. They are mainly used in the food industry [2-5] thanks to their slim thickness, wide range of mechanical properties, high corrosion resistance and of course their harmlessness to health. The ability to regulate, respectively to control the concentration, morphology and composition of the non-metallic inclusions [6,7] represents one of the most important factors to the improvement of steel purity, respectively the quality improvement of steel products. It is important to study the increased concentration distribution of the nonmetallic inclusions due to its impact on steel product quality in the form of the resulting defects [8,9]. The priority is to decrease the number of defects inside the steel ingot that results from the non-metallic inclusions present in steel [10]. The non-metallic inclusions present in metal are of different origins, e.g. from deoxidation, refractory materials, slag entrainment, casting powders and entrainment of the clogged parts of the submerged entry nozzle into the metal volume [11][12][13][14][15][16]. According to professional literature, during the continuous casting of steel on the casting equipment, casting with stable speeds is preferred. Generally, changes of speed in the casting process in production are inevitable [17]. A negative impact on the non-metallic inclusions to

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The Influence of Slag on Degradation of Tundish Working Lining

Cited by 4 publications

References 6 publications

The Advantages of Application of the Spheric Impact Pad Made From the Advanced Material for This Application

The Advantages of Application of the Spheric Impact Pad Made From the Advanced Material for This Application

Impact of Cast Speed on the Occurrence of the Non-Metallic Inclusions in Steel

Impact of Interstitial Aluminium Content on Occurrence of Non-Metallic Inclusions in Steel

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