连铸拉速和中包过热度的耦合作用分析及二冷配水控制实现

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基金项目:

国家自然科学基金资助项目(50174021)。

Coupling Analysis of Casting Speed and Tundish Superheat and Controlling Secondary Cooling in Continuous Casting

1. School of Information Science & Engineering, Northeastern University, Shenyang 110004, liaoning, China;
2. School of Materials & Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China;
3. Sanming Iron and Steel Company, Sanming 365000, Fujian, China

摘要: 应用三维凝固传热模型分析了拉速突变和中包钢水温度对铸坯凝固过程的影响,引入"有效拉速"和中包过热度作为二冷配水的前馈控制变量,动态模型仿真结果表明可以消除拉速引起的表面温度"尖峰"和钢水温度变化的影响,提出了建立基于有效拉速和中包过热度的二元动态配水模式,实际应用结果验证了此方法对提高铸坯质量的有效性。
- 连铸 /
- 有效拉速 /
- 中间包 /
- 过热度 /
- 三维凝固传热模型 /
- 动态配水模式
Abstract: A three-dimensional solidification heat transfer model has been developed to analyze the influence of casting speed and tundish superheat on solidification in continuous casting process. The virtual casting speed and tundish superheat are introduced as feed-forward control variables to determine the secondary cooling water distribution. The simulation results show that this analysis method can eliminate the temperature 'peak' caused by the suddenly changing of speed and temperature. A two-element dynamic cooling water distribution control model based on casting speed and temperature signal of tundish is presented. The application results show that the control strategy is effectual for improving the internal quality of casting billet.
- continuous casting /
- virtual casting speed /
- tundish /
- superheat /
- three-dimensional solidification heat transfer model /
- dynamic cooling water distribution control model