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Study of the Effect of Mold Corner Shape on the Initial Solidification Behavior of Molten Steel Using Mold Simulator

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Abstract

The chamfered mold with a typical corner shape (angle between the chamfered face and hot face is 45 deg) was applied to the mold simulator study in this paper, and the results were compared with the previous results from a well-developed right-angle mold simulator system. The results suggested that the designed chamfered structure would increase the thermal resistance and weaken the two-dimensional heat transfer around the mold corner, causing the homogeneity of the mold surface temperatures and heat fluxes. In addition, the chamfered structure can decrease the fluctuation of the steel level and the liquid slag flow around the meniscus at mold corner. The cooling intensities at different longitudinal sections of shell are close to each other due to the similar time-average solidification factors, which are 2.392 mm/s1/2 (section A-A: chamfered center), 2.372 mm/s1/2 (section B-B: 135 deg corner), and 2.380 mm/s1/2 (section D-D: face), respectively. For the same oscillation mark (OM), the heights of OM roots at different positions (profile L1 (face), profile L2 (135 deg corner), and profile L3 (chamfered center)) are very close to each other. The average value of height difference (HD) between two OMs roots for L1 and L2 is 0.22 mm, and for L2 and L3 is 0.38 mm. Finally, with the help of metallographic examination, the shapes of different hooks were also discussed.

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Acknowledgments

The financial support from the National Science Foundation of China (51661130154, U1760202) and Newton Advanced Fellowship (NA150320) is greatly acknowledged.

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Authors and Affiliations

  1. School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China

    Peisheng Lyu, Wanlin Wang, Xukai Long, Kaixuan Zhang & Erzhuo Gao

  2. National Center for International Research of Clean Metallurgy, Central South University, Changsha, 410083, Hunan, China

    Peisheng Lyu & Wanlin Wang

  3. The Department of Engineering and Innovation, The Open University, Milton Keynes, MK7 6AA, UK

    Rongshan Qin

Authors
  1. Peisheng Lyu
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  2. Wanlin Wang
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Correspondence to Wanlin Wang.

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Manuscrip submitted March 12, 2017.

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Lyu, P., Wang, W., Long, X. et al. Study of the Effect of Mold Corner Shape on the Initial Solidification Behavior of Molten Steel Using Mold Simulator. Metall Mater Trans B 49, 78–88 (2018). https://doi.org/10.1007/s11663-017-1154-y

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  • DOI: https://doi.org/10.1007/s11663-017-1154-y

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