多流中間包鋼液流動特性分析方法

李東俠; 崔衡

doi:10.13374/j.issn2095-9389.2016.01.006

多流中間包鋼液流動特性分析方法

doi: 10.13374/j.issn2095-9389.2016.01.006

李東俠¹,
崔衡^1,2, ,

1. 北京科技大學冶金工程研究院, 北京 100083;
2. 北京科技大學鋼鐵共性技術協同創新中心, 北京 100083

基金項目:

中央高校基本科研業務費資助項目(FRF-UM-15-006)

北京高等學校青年英才計劃資助項目(YETP0411)

詳細信息

通訊作者:
崔衡,E-mail:cuiheng@ustb.edu.cn

中圖分類號: TF777
計量
- 文章訪問數: 296
- HTML全文瀏覽量: 101
- PDF下載量: 13
- 被引次數: 0
出版歷程
- 收稿日期: 2014-10-25
- 網絡出版日期: 2021-07-05

A method for characterizing the flow fluid in a multi-strand tundish

LI Dong-xia¹,
CUI Heng^{1,2
, ,}

1. Engineering Research Institute, University of Science and Technology Beijing, Beijing 100083, China;
2. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China

摘要

摘要: 中間包水模型實驗一般采用脈沖刺激-響應實驗,分析所得平均停留時間分布(RTD)曲線特征;然而經典組合模型處理多流中間包RTD曲線時經常出現負體積死區分率或結果偏差較大的問題.本文基于組合模型,采用階段刺激-響應實驗,分析所得累計停留時間分布F曲線特征,對死區比例和活塞區比例進行計算.該模型計算方法適用于多流中間包的流場特征計算.基于累計停留時間分布曲線特征分析,對某鋼廠七流中間包控流裝置結構進行優化,優化后的中間包死區比例降低,各流差異減小,有利于生產順行和鑄坯質量的提高.
- 連鑄 /
- 中間包 /
- 鋼液流動 /
- 流動特性 /
- 方法論
Abstract: The residence time distribution(RTD) obtained from a pulse tracer experiment is always used for characterizing the flow fluid in tundishes. However,it is not suit to multi-strand or asymmetric tundishes because of negative volume or deviations calculated by the typical combined model using the RTD. In this paper,the accumulated residence time distribution(F curve) obtained from a step tracer experiment is applied to dead volume and plug volume calculations. This method is appropriate for single-strand tundishes and multi-strand tundishes. In this way,a 7-strand tundish in a steel plant is studied for optimizing its flow control devices.In the end,the dead volume decreases,and the distribution of molten steel among the strands tends to uniform,which benefits the slab quality and production process.
- continuous casting /
- tundishes /
- molten steel flow /
- flow characteristics /
- methodology