大板坯铝合金连铸的PIV模拟

徐萱; 张兴国; 周秉文; 房灿峰; 郝海

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大板坯铝合金连铸的PIV模拟
PIV Simulation for Melt Flow of Continuous Casting Aluminum Alloy Slab
2008年第6期页码：425-428
纸质出版日期： 2008 ，
DOI：

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[1]徐萱,张兴国,周秉文,房灿峰,郝海.大板坯铝合金连铸的PIV模拟[J].特种铸造及有色合金,2008(06):425-428+406.

Xu Xuan, Zhang Xingguo, Zhou Bingwen, et al. PIV Simulation for Melt Flow of Continuous Casting Aluminum Alloy Slab[J]. Special Casting & Nonferrous Alloys, 2008,(6):425-428.
[1]徐萱,张兴国,周秉文,房灿峰,郝海.大板坯铝合金连铸的PIV模拟[J].特种铸造及有色合金,2008(06):425-428+406. DOI：

Xu Xuan, Zhang Xingguo, Zhou Bingwen, et al. PIV Simulation for Melt Flow of Continuous Casting Aluminum Alloy Slab[J]. Special Casting & Nonferrous Alloys, 2008,(6):425-428. DOI：

摘要

采用粒子图像测速技术（PIV）对1650mm×220mm铝合金大板坯连铸过程中结晶器内熔体流场进行物理模拟

并对结晶器内流体基本特征进行了分析。用密度小于水的雪佛板制作5种不同结构的浮漂漏斗

以模拟实际生产中自由漂浮的状态。试验结果表明

随着拉坯速度的增加

液面趋于不稳定;适当地增加浮漂漏斗出水口向下倾角可以稳定液面;底部开口可以削弱流场内的波动

有效稳定液面

减少氧化夹杂的产生。

Abstract

The physical simulation of melt flow of continuous casting aluminum alloy slab with 1 650 mm in length and 220 mm in width in mould was conducted by PIV（particle image velocity）

and the melt characteristics in the mould was described.Five different floating distributors were made with PVC plates whose density is less than that of water to simulate the floating state as practical production.The results show that with the increase of casting speed

free surface tends towards more unstable.Appropriate increase of port angle of floating distributor can increase the stability of free surface.Ports at the bottom can effectively increase the stability of free surface as a result of weakening fluctuation of flow field

reducing oxidation inclusion.