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135 t钢包下水口结构优化
Structure Optimization Design of Ladle Shroud in 135 t Ladle
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- DOI:
- 作者:
- 邓诗云 王学武 张华 方庆
DENG Shiyun;WANG Xuewu;ZHANG Hua;FANG Qing
- 作者单位:
- 贵州正业工程技术投资有限公司 武汉科技大学钢铁冶金及资源利用教育部重点实验室
Zhengye Engineering&Investment Incorporation Limited,Guiyang550000,China;Key Laboratory for FerrousMetallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan430081,China
- 关键词:
- 钢包下水口 结构优化 开口度 流动状态
ladle shroud nozzle structure optimization opening coefficient flow condition
- 摘要:
- 针对某钢厂135 t钢包下注法浇注过程中铸流发散,钢液纯净度降低的问题,优化设计了下水口结构,数值模拟了钢包浇注时下水口内钢液-气两相流行为,对比了浇注开口度分别为100%、70%、30%情况下,出下水口钢液流动状态。结果表明:钢包水口开口度较大时,使用优化的下水口容易形成束流流出,流动平稳,钢液速度较小,且钢液与气相的接触时间减短,有利于提高钢液纯净度和下水口使用寿命。Aiming at the problem that the casting flow diverged and the purity of molten steel decreased in the pouring process of 135 t ladle in a steel workshop,the structure of the ladle shroud nozzle was optimized and designed.The liquid-gas phase of the ladle shroud nozzle was simulated numerically.The flow state of molten steel at the outlet and outlet under the conditions of 100%,70%and 30%pouring openings was compared.The results show that when the opening degree of ladle shroud nozzle is large,the optimized nozzle is easy to form beam outflow,the flow is stable,the velocity of molten steel is small,and the contact time between molten steel and gas phase is reduced,which is beneficial to improve the purity of molten steel and the service life of the ladle shroud nozzle.