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Teeming stream protection using an argon shroud during casting of steel ingots

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Abstract

Two kinds of argon shroud protection devices with two different basic structures were designed and investigated. Industrial experiments and numerical simulations were used to examine the protection effect, and the mechanism of air entrapment during the casting of steel ingots was analyzed. The influence of the structure of the argon shroud protection device on the protection effect was investigated. An argon shroud protection device mounted to the nozzle holder on the bottom of the ladle does not provide a good protection effect because air can easily flow into the teeming system and cause reoxidation of molten steel during teeming. By contrast, an argon shroud protection device seated on the top of the central trumpet provides an excellent protection effect, where air has little chance of flowing into the teeming system during casting. The feasibilities of the argon shroud protection devices are discussed.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 51404018) and the State Key Laboratory of Advanced Metallurgy Foundation (No. 41614014). The authors are thankful to ANSTEEL for the support on the field test.

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Authors and Affiliations

  1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China

    Chao-jie Zhang, Yan-ping Bao, Min Wang & Le-chen Zhang

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  1. Chao-jie Zhang
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  2. Yan-ping Bao
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  3. Min Wang
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  4. Le-chen Zhang
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Correspondence to Yan-ping Bao.

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Zhang, Cj., Bao, Yp., Wang, M. et al. Teeming stream protection using an argon shroud during casting of steel ingots. Int J Miner Metall Mater 24, 47–54 (2017). https://doi.org/10.1007/s12613-017-1377-6

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  • DOI: https://doi.org/10.1007/s12613-017-1377-6

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