连铸钢包下渣的影响及控制研究  

Research on the effects and control of ladle slag carry-over in continuous casting

作　　者：唐中队 袁纲 孔勇江 陈大忠 TANG Zhongdui;YUAN Gang;KONG Yongjiang;CHEN Dazhong(Steelmaking Plant,Wuhan Iron and Steel Co.,Ltd.,Wuhan 430083,China)

机构地区：[1]武汉钢铁有限公司炼钢厂,湖北武汉430083

出　　处：《电工钢》2023年第3期34-38,共5页ELECTRICAL STEEL

摘　　要：通过对某浇次钢包浇铸末期中包钢水全氧变化、炉次中包渣样分析,结合生产过程中钢包异常下渣时的影响及铸坯轧后缺陷进行研究。结果表明,钢包下渣会恶化钢水浇铸性,使水口堵塞,同时会导致合金元素氧化,产生夹杂,影响钢水纯净度。严重时会导致耐材异常侵蚀,中间包内“结壳”“焊棒”发生。根据钢种质量需求特性,制定差异性钢包下渣控制工艺,可以有效均衡产品质量和生产成本。Through the change of total oxygen content in the tundish during the ladle exchange moment and the composition analysis of slag in tundish,meanwhile combining with the effects of ladle slag carry-over in continuous casting and the defects of slab,the influence of ladle slag carry-over in continuous casting was obtained.The results showed that ladle slag carry-over deteriorated the liquid steel castability,causing the blocking of SEN and the oxidation of alloy element and reducing the molten steel purity.In severe cases,it might cause serious results such as corrosion of SEN,solidified crust of tundish slag and so on.According to the characteristics of steel quality requirements,the development of differential ladle slag control process can effectively balance the product quality and the production costs.

关 键 词：钢包下渣 二次氧化 全氧 钢包下渣检测 

分 类 号：TM275[一般工业技术—材料科学与工程]