连铸中间包全尺度物理模拟平台建立及应用研究<sup>*</sup>

doi:10.11900/0412.1961.2016.00047

金属学报

2016, Vol. 52

Issue (11): 1484-1490 DOI: 10.11900/0412.1961.2016.00047

本期目录 | 过刊浏览

连铸中间包全尺度物理模拟平台建立及应用研究^*

黄军^1,²,张永杰³(

),王宝峰²,张亚坤²,叶鑫²,周士凯^2,⁴

1 东北大学冶金学院, 沈阳 110819
2 内蒙古科技大学能源与环境学院, 包头 014010
3 上海宝钢研究院, 上海 201900
4 中国重型机械研究院股份公司, 西安 710032

ESTABLISHMENT OF A FULL SCALE TUNDISH PHYSICAL SIMULATION PLATFORM AND APPLICATION RESEARCH

Jun HUANG^1,²,Yongjie ZHANG³(

),Baofeng WANG²,Yakun ZHANG²,Xin YE²,Shikai ZHOU^2,⁴

1 School of Metallurgy, Northeastern University, Shenyang 110819, China
2 School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China
3 Baosteel Research Institute, Shanghai 201900, China
4 China National Heavy Machinery Research Institute Co., Ltd., Xi'an 710032, China

引用本文:

黄军,张永杰,王宝峰,张亚坤,叶鑫,周士凯. 连铸中间包全尺度物理模拟平台建立及应用研究^*[J]. 金属学报, 2016, 52(11): 1484-1490.
Jun HUANG, Yongjie ZHANG, Baofeng WANG, Yakun ZHANG, Xin YE, Shikai ZHOU. ESTABLISHMENT OF A FULL SCALE TUNDISH PHYSICAL SIMULATION PLATFORM AND APPLICATION RESEARCH[J]. Acta Metall Sin, 2016, 52(11): 1484-1490.

全文: PDF(1347 KB) HTML

摘要:

基于同时满足连铸水模拟实验中Re准数和Fr准数相似要求, 建立了一套可全尺度模拟连铸过程流动的实验平台. 利用该平台的NI图像处理与PIV粒子测速技术, 对特厚板连铸用中间包内速度场、涡量场、RTD等流动特征进行研究. 结果表明, 中间包内流动呈现湍流漩涡状, 在注流区形成一个类似“漏斗”状的涡结构, 由于中间包内通道的存在, 在浇注区形成2个大的环流, 并对侧墙有明显冲击, 非接触测量获取的RTD与数值模拟结果吻合, 长的停留时间和大的死区体积表明该中间包补热的必要性.

关键词 ：中间包,, 全尺度,, 测速,, 涡量,, 停留时间(RTD)

Abstract：

The importance of proper melt flow in continuous casting tundish for production of clean steel was well recognized, more in-depth research melt flow by physical models can promote tundish metallurgy effect and improve the quality of liquid steel. Based on the requirements of Re number and Fr number similar on the same time in the continuous casting water simulation, a synthetical hydraulic simulation platform of continuous casting was established. Flow characteristics with velocity field, vorticity field, RTD in extra thick slab tundish were got by the platform using NI image processing and PIV. The results showed that flow in the tundish had larger turbulent eddies, which formed a similar "funnel" vortex structure in inlet section of the tundish. Flow brought two big circulations in the exit section because of the channel and had a great impact on the side walls. RTD with noncontact measurement was coincident with the results of numerical simulation, longer residence time and larger dead volume showed the necessity of heating for the tundish.

Key words： tundish, full scale, velocity measurement, vorticity, residence time distribution (RTD)

收稿日期: 2016-01-28

基金资助:* 中国重型机械研究院股份公司资助项目

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https://www.ams.org.cn/CN/10.11900/0412.1961.2016.00047 或 https://www.ams.org.cn/CN/Y2016/V52/I11/1484

图1 连铸综合水力学实验平台示意图和现场图

图2 中间包结构示意图

图3 速度测量位置示意图

图4 连铸拉速0.15 m/min时注流区A截面的流场涡量图和速度图

图5 拉速为0.15和0.20 m/min时浇注区B和C截面速度图

图6 拉速0.15 m/min下数值模拟的中间包内三维流线图

图7 拉速0.15 m/min时中间包的RTD曲线

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