Constitutional Segregation of Al2O3 in Mold Slag and Its Impact on Steel Cleanliness During Continuous Casting

Palai, P.; Sahoo, P. P.; Dey, A.; Roy, Tapas Kumar; Mahashabde, V. V.

doi:10.1007/s11663-013-9879-8

Cited by 6 publications

(2 citation statements)

References 14 publications

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“…Modification of the flux composition in the continuous casting of LC steel killed with aluminum has been well recognized. [43] Analysis of samples of the mold flux taken during continuous casting of ultra-low carbon (ULC), LC, and peritectic steel grades [43] showed that average Al 2 O 3 content in the mold slag increased to about 12 mass pct from average 5 mass pct in the feed flux.…”

Section: Flux-steel Reactions In the Casting Of High-al Steelmentioning

confidence: 99%

Challenges in the Mold Flux Design: Development of F‐Free Fluxes and Fluxes for Casting of High‐Al Steel

Yang

Wang

et al. 2021

steel research int.

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A significant research effort is directed toward development of F-free fluxes to decrease an environmental impact of steel continuous casting. Another challenging problem in the mold flux design is their stability in the casting of high-aluminum steel. This article summarizes the results of a study of F-free CaO-SiO 2 -based fluxes and CaO-Al 2 O 3 -based fluxes for the continuous casting of high-Al steels, obtained at the University of New South Wales, Sydney, in close collaboration with the Baosteel Research Centre, China. This article discusses melting properties, viscosity, flux stability, crystallization, and heat transfer of F-free CaO-SiO 2 -based fluxes and CaO-Al 2 O 3 -based fluxes, and the effect of high-Al steel-flux reaction on the flux properties. Melting properties of fluxes are determined by the hot stage microscopy method. Viscosity is measured using rotating cylindrical viscometer. Solidification of mold fluxes is examined using single and double hot thermocouple techniques (SHTT and DHTT, respectively). Continuous cooling and isothermal SHTT experiments are used to construct continuous cooling transformation (CCT) and time-temperature transformation (TTT) diagrams. Heat transfer of mold fluxes is examined using an IR emitter technique. The properties of F-free CaO-SiO 2 -based fluxes and CaO-Al 2 O 3 -based fluxes are compared with the properties of industrial mold fluxes.

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Section: Flux-steel Reactions In the Casting Of High-al Steelmentioning

confidence: 99%

Challenges in the Mold Flux Design: Development of F‐Free Fluxes and Fluxes for Casting of High‐Al Steel

Yang

Wang

et al. 2021

steel research int.

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“…[O] in the tundish is another important factor affecting the cleanliness of ULC steel [2]. For process-II, the T.…”

Section: T[o] Evolution Of the Refining Processmentioning

confidence: 99%

Cleanliness of Ti-bearing Al-killed ultra-low-carbon steel during different heating processes

Guo

Bao

Wang

2017

Int J Miner Metall Mater

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During the production of Ti-bearing Al-killed ultra-low-carbon (ULC) steel, two different heating processes were used when the converter tapping temperature or the molten steel temperature in the Ruhrstahl-Heraeus (RH) process was low: heating by Al addition during the RH decarburization process and final deoxidation at the end of the RH decarburization process (process-I), and increasing the oxygen content at the end of RH decarburization, heating and final deoxidation by one-time Al addition (process-II). Temperature increases of 10°C by different processes were studied; the results showed that the two heating processes could achieve the same heating effect. The T.[O] content in the slab and the refining process was better controlled by process-I than by process-II. Statistical analysis of inclusions showed that the numbers of inclusions in the slab obtained by process-I were substantially less than those in the slab obtained by process-II. For process-I, the Al 2 O 3 inclusions produced by Al added to induce heating were substantially removed at the end of decarburization. The amounts of inclusions were substantially greater for process-II than for process-I at different refining stages because of the higher dissolved oxygen concentration in process-II. Industrial test results showed that process-I was more beneficial for improving the cleanliness of molten steel.

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Numerical Simulation Study on Design Optimization of Inner Cavity Dimensions of Large-Capacity Tundish

Zhong

Zhu

Huang

et al. 2019

The Minerals, Metals &Amp; Materials Series

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Constitutional Segregation of Al2O3 in Mold Slag and Its Impact on Steel Cleanliness During Continuous Casting

Cited by 6 publications

References 14 publications

Challenges in the Mold Flux Design: Development of F‐Free Fluxes and Fluxes for Casting of High‐Al Steel

Challenges in the Mold Flux Design: Development of F‐Free Fluxes and Fluxes for Casting of High‐Al Steel

Cleanliness of Ti-bearing Al-killed ultra-low-carbon steel during different heating processes

Numerical Simulation Study on Design Optimization of Inner Cavity Dimensions of Large-Capacity Tundish

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