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在实验室建立了4流中间包流体流动的物理模型,通过测定停留时间分布(RTD)曲线,研究不同的控流装置组成的中间包结构对流体流动特性的影响。研究结果表明:沟槽或者圆孔槽均能明显改善各流流动特性的一致性,与带“V”型挡墙组合的挡坝高度对中间包内钢液的流动特性有影响;适当高度的坝与湍流控制器、沟槽、“V”型挡墙组合的控流装置在控制流体流动方面效果较好,在其基础上将沟槽改成圆孔槽控流效果更佳。根据实验研究提出最佳方案,即带湍流控制器、孔径φ150mm的“V”型挡墙、高300mm的坝和圆孔槽的中间包组合。
A physical model of fluid flow in a 4-tundish was established in the laboratory. The influence of tundish structure composed of different flow control devices on fluid flow properties was studied by measuring the residence time distribution (RTD) curve. The results show that the groove or circular groove can significantly improve the consistency of the flow characteristics of each flow, and the height of the dam combined with the “V” type retaining wall influences the flow characteristics of the liquid steel in the tundish. Appropriate A high degree of dam and turbulence controller, groove, “V ” type retaining wall combination of flow control device in the control of fluid flow better, on the basis of the groove into a circular hole slot flow control effect is better . According to the experimental research, the best solution is presented, which is a tundish combination with turbulent flow controller, “V” type retaining wall with φ150mm diameter, 300mm height dam and round hole slot.