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Synchronous Control Model and Oscillation Principle of Swing Crank Type for Continuous Casting Mold

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Abstract

Mold oscillation is the key technology of steel continuous casting. The non-sinusoidal oscillator driven by the hydraulic servo system has the disadvantages of complex structure, high investment and maintenance cost, oil leakage, zero drift. Thus, the non-sinusoidal oscillator driven by mechanism was presented. However, the amplitude could not be changed on line for the existing mechanical oscillators. And the online oscillation process parameters optimizing and the billet surface quality improving become difficult. To realize the oscillation parameters adjusted online, a novel swing crank type non-sinusoidal oscillator driven by a servomotor was proposed in this paper. Firstly, the working principle of the oscillator was illustrated and the three-dimensional model of the oscillator was established. Secondly, the non-sinusoidal oscillation waveform function was given. To realize non-sinusoidal oscillation waveform, the angular speed of servomotor was determined. Thirdly, the oscillation process parameters calculation methods were presented, the multi process parameter curve was given and the synchronous control model of non-sinusoidal oscillation was established. And the oscillation process parameters were calculated. Finally, the oscillation mark depth and slag consumption were calculated. From the calculation results, it can be seen that the non-sinusoidal oscillation process parameters could meet the steel continuous casting process requirements well. For non-sinusoidal oscillation, the oscillation mark depth reduced by 9.76% and slag consumption increased by 22.78% compared with that of sinusoidal oscillation, which will help to improve the lubrication condition between the mold and the billet and enhance billet surface quality.

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Acknowledgements

The authors are especially grateful to the announce reviewer, whose advice will be helpful to the paper. Meanwhile, the authors also thank the Hebei Provincial Natural Science Foundation of China (Granted No. E2020203128, F2020203105), Hebei Provincial Education Department Higher Education Science and Technology Program (NATURAL SCIENCE) (Granted No. ZD2021106), Central Government Guided Local Science and Technology Development Fund Project (Granted No. 236Z1601G), Key Research and Development (R&D) Plan of Hebei Province (Granted No.21327102D), Science and Technology Program of Qinhuangdao (Granted No.202301A316).

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Authors and Affiliations

  1. Ocean College, Hebei Agricultural University, Qinhuangdao, 066003, China

    Chao Zhou, Jiajie Xu & Qiang Zhang

  2. National Engineering Research Center for Equipment and Technology of Cold Rolled Strip, Yanshan University, Qinhuangdao, 066004, China

    Chao Zhou, Minghui Cao & Xingzhong Zhang

  3. Research Institute for High-End Equipment Manufacturing Industry and Technology of Hebei Province, Qinhuangdao, 066004, China

    Xingzhong Zhang

  4. School of Science, Yanshan University, Qinhuangdao, 066004, China

    Fang Wang

Authors
  1. Chao Zhou
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  2. Jiajie Xu
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  3. Minghui Cao
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  4. Xingzhong Zhang
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  5. Qiang Zhang
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  6. Fang Wang
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Correspondence to Xingzhong Zhang.

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Zhou, C., Xu, J., Cao, M. et al. Synchronous Control Model and Oscillation Principle of Swing Crank Type for Continuous Casting Mold. Trans Indian Inst Met (2024). https://doi.org/10.1007/s12666-024-03279-y

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