汽车板连铸结晶器偏流流场监测及控制现状  

Monitoring and control status of bias flow in continuous casting mold for automobile plate

作　　者：罗衍昭 赵长亮 季晨曦 刘延强 周海忱 黄财德 李海波 LUO Yanzhao;ZHAO Changliang;JI Chenxi;LIU Yanqiang;ZHOU Haichen;HUANG Caide;LI Haibo(Research Institute of Technology,Shougang Group Co.,Ltd.,Beijing 100043,China;Beijing Key Laboratory of Green Recyclable Process for Iron and Steel Production Technology,Beijing 100043,China;Beijing Engineering Research Center of Energy Steel,Beijing 100043,China;Steelmaking Department,Shougang Jingtang United Iron and Steel Co.,Ltd.,Tangshan 063200,Hebei,China)

机构地区：[1]首钢集团有限公司技术研究院,北京100041 [2]绿色可循环钢铁流程北京市重点实验室,北京100043 [3]北京市能源用钢工程技术研究中心,北京100043 [4]首钢京唐钢铁联合有限责任公司炼钢部,河北唐山063200

出　　处：《钢铁》2024年第11期21-33,64,共14页Iron and Steel

摘　　要：在汽车制造业的快速发展背景下,对冷轧板和镀锌板等产品的要求不断提高,市场期望实现“零缺陷”的质量水平。在高等级汽车用钢连铸过程中,水口堵塞问题及其对最终产品质量的潜在影响,已成为该领域亟待解决的重点。以超低碳汽车板为研究对象,综合分析了国内外结晶器流场实时监测技术进展及偏流控制措施,为高品质汽车板稳定生产提供理论与实践支持。针对连铸过程中结晶器内偏流流场的问题,探讨了量化评估方法,如通过计算水口堵塞系数和对称指数S,为预测和控制铸坯质量提供了科学依据。此外,还介绍了利用热电偶温差和光纤传感器进行温度测量的实时监测技术,为连续铸钢过程中的质量监控和工艺优化开辟了新途径。为有效控制结晶器内偏流现象,详述了多种先进控制技术,包括电磁控制、水口通电技术以及电磁旋流水口等技术,这些技术通过调节钢液在结晶器内的流动分布,有效抑制了流场偏流。进一步展望未来,强调了外加电场在调控钢液中夹杂物行为、提高钢水洁净度方面的广阔应用前景。此外,指明了探索外加电磁场技术在增强浸入式水口防堵塞与优化结晶器流场方面的潜在价值,将对实现更高效、更高质量的汽车用钢生产具有深远意义。Against the backdrop of rapid advancements in the automotive manufacturing industry,there is a mounting demand for higher quality in products such as cold-rolled and galvanized sheets,with the market aspiring for a"zero-defect"quality standard.In the context of continuous casting of high-grade steel for automotive applications,the issue of nozzle clogging and its potential impact on the final product quality has emerged as a pressing concern.It takes ultra-low carbon automotive sheet steel as the subject of study,comprehensively reviewing the progress in both domestic and international technologies for real-time monitoring of mold flow fields and measures to control bias flow,thereby providing theoretical and practical support for the stable production of high-quality automotive sheets.Addressing the challenge of bias flow in the mold during continuous casting,it explores quantitative assessment methodologies,such as calculating nozzle clogging coefficients and symmetry indices(S),furnishing a scientific basis for predicting and controlling casting slab quality.Moreover,it introduces innovative real-time monitoring techniques,including the use of thermocouples to measure temperature differences and fiber optic sensors for temperature detection,which pave the way for enhanced quality control and process optimization in continuous steel casting.To effectively manage bias flow within the mold,it elaborates on several advanced control technologies,notably electromagnetic control,external electric nozzles,and electromagnetic swirling nozzles.These methodologies,by adjusting the flow distribution of molten steel in the mold,efficiently mitigate flow field asymmetry.Looking ahead,it underscores the broad application prospects of external electric fields in regulating the behavior of inclusions in molten steel and enhancing steel purity.Furthermore,the research highlights the potential significance of exploring the application of external electromagnetic fields in reinforcing the anti-clogging capability of submerged noz

关 键 词：连铸 偏流流场 汽车板 防堵塞 结晶器 

分 类 号：TF341.6[冶金工程—冶金机械及自动化]