Investigation
on Mold Flux Melting and Consumption During Continuous Casting of Liquid Steel

Kamaraj, Ashok; Dash, Ansuman; Murugaiyan, Premkumar; Misra, Siddhartha

doi:10.1007/s11663-020-01906-9

Cited by 11 publications

(6 citation statements)

References 12 publications

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“…The detailed investigation about the melting behavior of the studied fluxes can be found elsewhere. [38] The solidified steel shell obtained from the simulation experiments using the peritectic and IF steel and the respective mold flux is shown in Figure 6. It may be noted that the features in the cast surface such as oscillation marks appear similar to the features usually obtained in the cast surface of the industrial continuous casting process.…”

Section: Characterization Of the Steel Shell Obtained From The Simulatormentioning

confidence: 99%

“…As mentioned earlier, several approaches have been proposed by the researchers to qualify the mold flux used in the continuous casting process. [37][38][39][40][41] They are categorized as follows: Though several experimental investigations are available and attempts are being undertaken, a logical approach for the selection of mold flux for continuous casting of crack-sensitive steels is limited. Out of all the experimental investigations, inverse mold simulation of the continuous casting process is identified to be a promising technique, as it inherently considers the interaction of major factors (liquid steel, mold flux, cooling rate, casting speed, mold oscillation), which decides the smooth industrial casting operation.…”

Section: Heat Flux and Mold Surface Temperature At The Meniscusmentioning

confidence: 99%

“…However, this simulation technique is not recommended to study the melting behavior of mold flux bed, as the flux bed height similar to the industry practice could not be maintained. [38] The investigation on the melting rate of mold flux is essential to optimize another important process parameter in the caster, i.e., mold flux consumption. Therefore, using the inverse mold simulation technique, it is difficult to simulate the complete sequence of mold flux melting followed by consumption due to oscillation marks and lubrication, akin to the industrial continuous casting process.…”

Section: Limitation Of Inverse Mold Simulationmentioning

confidence: 99%

See 2 more Smart Citations

Characterization and Assessment of Mold Flux for Continuous Casting of Liquid Steel Using an Inverse Mold Simulator

Kamaraj

Tripathy

Chalavadi

et al. 2021

steel research int.

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Section: Characterization Of the Steel Shell Obtained From The Simulatormentioning

confidence: 99%

Section: Heat Flux and Mold Surface Temperature At The Meniscusmentioning

confidence: 99%

Section: Limitation Of Inverse Mold Simulationmentioning

confidence: 99%

See 1 more Smart Citation

Characterization and Assessment of Mold Flux for Continuous Casting of Liquid Steel Using an Inverse Mold Simulator

Kamaraj

Tripathy

Chalavadi

et al. 2021

steel research int.

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“…The quality of a slab can be determined by ascertaining the parameters of the casting process according to the research findings presented in [4,5]. The negative strip stage (t n ) is generally considered to be a special stage, which affects the quality of the slabs.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Initial Shell Solidification and the Effect of Negative Strip Time on Oscillation Marks during Continuous Casting

Cao

Liu

Zhang

2023

Metals

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The initial solidification of the shell and the effect of the negative strip on oscillation marks were studied during the oscillation of the mold. A two-dimensional model was established concerning mold oscillation, which was coupled with fluid flow, heat transfer, and solidification, and the validity of the model was verified. The results show that oscillation marks were formed at the negative strip stage and that the quality of the slabs can be improved by reducing the duration of the negative strip stage. During the negative strip stage, the shell was affected by the strong backflow of liquid slag and the pressure on the surface sharply increased, resulting in the formation of a depression oscillation mark on the shell. The effects of the negative strip stage on the initial solidified shell during each cycle were compared. As the depth of the oscillation mark decreased, the upward shear stress on the shell’s surface increased, without the occurrence of a negative strip stage during one cycle. The results provided a new method for reducing oscillation marks and are of great significance for improving casting slabs’ quality.

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“…That means the composition of the mold flux does not change during the heating and high temperature keeping in whole process by default. Third, the sample is briquetted, heated, melted, and held at measurement temperature for hours to get these properties data [6][7][8][9]. If there are volatile components in the mold flux, it will evaporate inevitably or reacts to evaporates (refer as evaporated for brief below).…”

Section: Introductionmentioning

confidence: 99%

Characterization and analysis on the hemispherical point temperature uncertainty problem of mold flux with volatiles

Wang

Ren

Zhao

et al. 2022

J min metall B Metall

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In hemisphere point temperature (Thp) measurement of continuous casting mold flux, the evaporation of volatiles under high temperature will have a strong impact on the results. Based on the comprehensive analysis of hemisphere point method and its influencing factors, the corresponding volatile-containing mold flux and non-volatile mold flux were selected to get Thp with different heating rates. Combined with the Thp measurement and TG-DSC results, the effect of relevant factors during measuring process were analysed and the way to characterize and evaluate the effects were suggested. Furthermore, an improved method of mold flux melting point test was put forward. The results showed that for non-volatile mold flux, the temperature hysteresis has a greater effect than heat transfer delay and fractional melting. And for mold flux with volatile, the effect of evaporation is greater than other factors. Traditional hemisphere-point method is no longer suitable for the volatile mold flux. In order to get through this problem, improved methods were proposed. One is measuring Thp by traditional way, correcting the composition at the Thp, corresponding Thp with the corrected composition. Another is taking the initial composition, revising the hemispherical point temperature Thp, matching the revised Thp with the initial composition.

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Investigation on Mold Flux Melting and Consumption During Continuous Casting of Liquid Steel

Cited by 11 publications

References 12 publications

Characterization and Assessment of Mold Flux for Continuous Casting of Liquid Steel Using an Inverse Mold Simulator

Characterization and Assessment of Mold Flux for Continuous Casting of Liquid Steel Using an Inverse Mold Simulator

Investigation on Initial Shell Solidification and the Effect of Negative Strip Time on Oscillation Marks during Continuous Casting

Characterization and analysis on the hemispherical point temperature uncertainty problem of mold flux with volatiles

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