Fluid flow modeling of a curved continuous slab casting mold

弯曲板坯连铸结晶器的流体流动建模

• 批准号: 530892-2018
• 负责人: Chattopadhyay, Kinnor
• 金额: $ 13.31万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=719669
• 关键词: Fluid; flow; modeling; curved; continuous

Flat product manufacturers are under constant pressure to increase productivity, and simultaneously maintain high quality of continuously cast steel slabs because of stringent quality demands imposed by their customers. However, increasing productivity has detrimental effects on slab quality, and defects and rejections have a major impact on the producers bottom-line. Controlling fluid flows in continuous casting tundishes, and moulds is one of the key parameters to ensure cleaner steel and reduce defects. Physical and mathematical modelling is an absolutely essential tool to understand and optimize fluid flows in continuous casting. This project will deal with fluid flow optimization in the moulds, and that is the motivation of STELCO to collaborate with the University of Toronto. U of T will build an innovative state of the art water model facility to understand multiphase flow in moulds. In order to make the water model realistic, a 1/2 scale water model curved mould will be built, and exact geometries of the stopper rod and SEN will be replicated. Innovative manufacturing techniques including 3D printing and CNC machining will be used to reconstruct complex nozzle designs. The goal is to increase caster productivity and improve product quality. The project will identify solution strategies related to the following aspects (a) Optimized argon injection in moulds (b) Minimizing Sliver defects (c) Minimizing inclusion entrapment in the solidified shell due to curved mould (d) SEN design for casting narrow, wide and ultra wide slabs (e) SEN design for low speed casting versus high speed casting (f) Meniscus fluctuations and mould powder entrapment (g) Quantification of mould flow index through F value optimization (h) Minimization of SEN clogging through effective SEN design. The cost savings arising from improving the continuous casting process and enhancing steel quality is expected to exceed $3 million/year which is aligned with STELCO'S strategic vision and business goals, and will create immediate benefits. There will be an economic impact which translates to $15 Million within five years after completion of this project and will significantly boost the manufacturing sector of Ontario.

平坦的产品制造商承受着提高生产率的持续压力，并且由于其客户施加的质量严格的需求，因此同时保持高质量的持续铸造钢板。但是，提高的生产率对平板质量产生了不利影响，缺陷和拒绝对生产者的底线产生了重大影响。连续铸造中控制流体流动，而模具是确保钢并减少缺陷的关键参数之一。物理和数学建模是理解和优化连续铸造中流体流的绝对必要工具。该项目将处理模具中的流体流量优化，这就是Stelco与多伦多大学合作的动机。 T的U将建立最先进的水模型设施的创新状态，以了解模具中的多相流。为了使水模型逼真，将建立1/2比例的水模型弯曲模具，并将重复塞子杆和SEN的确切几何形状。包括3D打印和CNC加工在内的创新制造技术将用于重建复杂的喷嘴设计。目标是提高施法生产率并提高产品质量。该项目将确定与以下各个方面相关的解决方案策略（a）在模具中优化的氩气注入（b）最小化sliver缺陷（c）最大程度地减少由于弯曲的模具（d）sen设计而导致的固化外壳中的包含夹带（d），用于铸造狭窄，宽和宽阔和超宽板（E）低速铸造与高速铸造（F）弯月面的波动和模具粉末夹层（G）通过有效的SEN设计通过有效的SEN堵塞来对SEN堵塞的最小化。改善连续铸造过程和增强钢质质量所带来的成本节省预计将超过300万美元，这与Stelco的战略愿景和业务目标保持一致，并将立即带来收益。该项目完成后五年内将产生经济影响，转化为1500万美元，并将大大促进安大略省的制造业。