Influence of slag denaturalization on inclusions in IF steel

PENG Zhu-gang; QI Jiang-hua; YANG Cheng-wei

doi:10.13374/j.issn2095-9389.2018.s1.025

Volume 40 Issue S1

Dec. 2018

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PENG Zhu-gang, QI Jiang-hua, YANG Cheng-wei. Influence of slag denaturalization on inclusions in IF steel[J]. Chinese Journal of Engineering, 2018, 40(S1): 174-179. doi: 10.13374/j.issn2095-9389.2018.s1.025

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PENG Zhu-gang, QI Jiang-hua, YANG Cheng-wei. Influence of slag denaturalization on inclusions in IF steel[J]. Chinese Journal of Engineering, 2018, 40(S1): 174-179. doi: 10.13374/j.issn2095-9389.2018.s1.025

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Influence of slag denaturalization on inclusions in IF steel

doi: 10.13374/j.issn2095-9389.2018.s1.025

1. School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing;
2. Wuhan Branch of Baosteel Central Research Institute

Received Date: 2018-05-08
Available Online: 2023-07-18

Abstract

Abstract

To study the influence of slag denaturalization process on the top slag oxidation and inclusions in interstitial free (IF) steel, the slag and steel samples were analyzed and taken from different positions in different slag denaturalization experiments.In the results, the best denaturalization effect is obtained by added the denaturalization agent in argon station, the slag oxidizability, indicated as the content of total Fe and MnO by mass in slag, w (T.Fe+MnO) , decreases by 8.73%.Compared with the slag denaturalization process added the denaturalization agent after RH deoxygenation-alloying and RH refining, the number density of inclusions in slag denaturalization process added the denaturalization agent in argon station is decreased by 38.5%and 36.0%, respectively.After RH refining, the number of inclusions in steel is less, but when the slag is in high oxidizability, the oxygen is transferred from slag to steel, which makes the number of inclusions in steel rise.
- steelmaking,
- interstitial free steel,
- slag denaturalization,
- oxidizability,
- inclusions

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References(14)

References

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