非对称五流圆坯连铸中间包水模实验研究

Water model experiments on tundish of 5 strand asymmetrical round billet continuous caster

采用水模实验研究了控流装置对非对称五流圆坯连铸中间包内流场的影响。通过测定模型中间包内各水口的RTD曲线,计算了中间包流场的平均停留时间及死区、活塞区和混合区的体积。提出了控流装置的开孔位置、大小、角度和布置方式对多流连铸中间包流动特性的影响规律。提出了能够合理分配钢水和有效减小死区的控流装置结构。

The effect of the flow control device on the fluid flow field in the tundish of the 5-strand asymmetrical round billet continuous caster has been experimentally studid using a water model. And the average residence time of the flow field in the tudish as well as volumes of dead zone, plug shaped zone and mixture zone have been calculated by measurement of the RTD curves of each nozzle in the tundish of the model and the law of the influence of the position, size, angle and mode of arrangement of the opening holes in the flow control device on the flow ability of the liquid steel in the tundish of the multi-strand continuous caster found out and the geometrical structure of the flow control device that could very reasonably distribute the liquid steel and greatly reduce the area of the dead zone put forward.