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首页> 外文期刊>Journal of Materials Science >Effect of casting parameters on the freezing point position of the 304 stainless steel during twin-roll strip casting process by numerical simulation
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Effect of casting parameters on the freezing point position of the 304 stainless steel during twin-roll strip casting process by numerical simulation

机译：数值模拟对双辊薄带连铸工艺中铸造参数对304不锈钢凝固点位置的影响

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摘要

This study focuses on the numerical simulation of the temperature fields of the 304 stainless steel during twin-roll strip casting process. The cracks and fratographs of the 304 stainless steel strip with the practical casting parameters were observed by Scanning Electron Microscopy. The exit temperature of the 304 stainless steel during twin-roll strip casting process was measured. Meanwhile, it was simulated by means of finite element model. The observed results show that the strip from outside to inside are composed of refined crystal zone, columnar crystal one, and equated axis crystal one. The cracks occur on the strip surface, extended to interior along the columnar crystal boundary, and then, ended at the juncture between the columnar crystal zone and equated axis crystal one. The simulated result was compared to the measured temperature, which showed a good agreement, thus indicating that this model is valid and accurate. Then, by employing this model, the effects of the casting parameters, such as casting speed and casting temperature, on the freezing point position of the 304 stainless steel during twin-roll strip casting process were simulated too. The simulated results show that, the freezing point position is decreased with the increasing casting speed and casting temperature. For producing high-quality strip of 304 stainless steel during twin-roll strip casting, the limits of casting speed and casting temperature are 1.1 m·s−1 and 1,570 °C, respectively.
机译：本研究着重于双辊薄带连铸过程中304不锈钢温度场的数值模拟。通过扫描电子显微镜观察具有实际铸造参数的304不锈钢带的裂纹和断口图。测量了双辊带钢铸造过程中304不锈钢的出口温度。同时，利用有限元模型对其进行了仿真。观察结果表明，条带从外到内由细化晶体区，柱状晶体一和等轴晶一组成。裂纹出现在带状表面上，沿着柱状晶体边界延伸到内部，然后在柱状晶体区和等轴晶区之间的交界处终止。将仿真结果与实测温度进行比较，结果吻合良好，表明该模型有效，准确。然后，通过该模型，还模拟了双辊带钢铸造过程中铸造参数（如铸造速度和铸造温度）对304不锈钢凝固点位置的影响。仿真结果表明，凝固点位置随着铸造速度和铸造温度的升高而降低。为了在双辊带钢连铸中生产高质量的304不锈钢带钢，铸造速度和铸造温度的极限分别为1.1 m·s-1 和1,570°C。

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  • 来源
    《Journal of Materials Science》 |2012年第9期|p.3953-3960|共8页
  • 作者

    Q. Li; Y. K. Zhang; L. G. Liu; P. Zhang; Y. Zhang; Y. Fang; Q. X. Yang;

  • 作者单位

    State Key Laboratory of Metastable Materials Science &amp Technology, Yanshan University, Qinhuangdao, 066004, People’s Republic of China;

    State Key Laboratory of Metastable Materials Science &amp Technology, Yanshan University, Qinhuangdao, 066004, People’s Republic of China;

    State Key Laboratory of Metastable Materials Science &amp Technology, Yanshan University, Qinhuangdao, 066004, People’s Republic of China;

    State Key Laboratory of Metastable Materials Science &amp Technology, Yanshan University, Qinhuangdao, 066004, People’s Republic of China;

    College of Materials Science and Engineering, University of Science and Technology, Beijing, 100083, China;

    Advanced Technology Institute, Technology Center of Bao Steel, Shanghai, 201900, China;

    State Key Laboratory of Metastable Materials Science &amp Technology, Yanshan University, Qinhuangdao, 066004, People’s Republic of China;

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