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首页> 外文会议>Advances in the science and engineering of casting solidification >NUMERICAL SIMULATION OF SOLIDIFICATION STRUCTURE FOR YQ450NQR1 STEEL BLOOM IN CONTINUOUS CASTING PROCESS
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NUMERICAL SIMULATION OF SOLIDIFICATION STRUCTURE FOR YQ450NQR1 STEEL BLOOM IN CONTINUOUS CASTING PROCESS

机译：YQ450NQR1钢坯连铸过程凝固组织的数值模拟。

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摘要

The solidification structure of continuous casting bloom has a significant impact on quality and performance of final products. In this paper, numerical simulation for a 360mm×450mm YQ450NQR1 steel continuous casting bloom is carried out to study the impact of superheat and secondary cooling water flowrate on solidification structure of the bloom using coupled Cellular Automaton-Finite Element (CA-FE) method. The results show that increase of superheat and secondary cooling water flowrate leads to dendrites growth acceleration and coarsening from bloom surface to the center and decrease in equiaxed grain ratio. When the superheat increases from 10℃ to 40℃, the equiaxed grain ratio drops from 45.6% to 22.3% and the average grain diameter increases from 1.63mm to 1.92mm. When secondary cooling water flowrate increases from 0.35L/kg to 0.65L/kg, the equiaxed grain ratio drops from 37.7% to 23.1% and the average grain diameter increases from 1.68mm to 1.98mm.
机译：连铸坯的凝固组织对最终产品的质量和性能有重大影响。本文采用元胞自动机有限元（CA-FE）方法，对360mm×450mm YQ450NQR1钢连铸坯进行了数值模拟，研究了过热度和二次冷却水流量对铸坯凝固组织的影响。结果表明，过热和二次冷却水流量的增加导致枝晶生长加速，从大方坯表面到中心粗化，等轴晶率降低。当过热度从10℃增加到40℃时，等轴晶率从45.6％下降到22.3％，平均粒径从1.63mm增加到1.92mm。当二次冷却水流量从0.35L / kg增加到0.65L / kg时，等轴晶粒比从37.7％降低到23.1％，平均晶粒直径从1.68mm增加到1.98mm。

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  • 来源
  • 会议地点 Orlando FL(US)
  • 作者

    Kun Dou; Lei Wang; Jiasheng Qing; Xiaofeng Zhang; Bao Wang; Bo Liu; Qing Liu;

  • 作者单位

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing 30 Xueyuan Rd. Haidian District, Beijing, 100083, P. R. China;

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing 30 Xueyuan Rd. Haidian District, Beijing, 100083, P. R. China;

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing 30 Xueyuan Rd. Haidian District, Beijing, 100083, P. R. China;

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing 30 Xueyuan Rd. Haidian District, Beijing, 100083, P. R. China;

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing 30 Xueyuan Rd. Haidian District, Beijing, 100083, P. R. China;

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing 30 Xueyuan Rd. Haidian District, Beijing, 100083, P. R. China;

    State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing 30 Xueyuan Rd. Haidian District, Beijing, 100083, P. R. China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Continuous casting bloom; Solidification structure; Cellular Automaton-Finite Element; Numerical simulation; YQ450NQR1 steel;

    机译：连铸坯；凝固组织；元胞自动机有限元数值模拟YQ450NQR1钢;

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