小方坯含铝冷镦钢水口结瘤分析与控制  

Analysis on Clogging at Nozzle during Billet Continuous Casting for Manufacturing Cold Headed Steel Containing Al and Control of Clogging

作　　者：孙振宇[1] 唐雪峰 王洪涛[1] 李叶忠 那廷权[1] 许海亮[1] 温荣宇[1] Sun Zhenyu;Tang Xuefeng;Wang Hongtao;Li Yezhong;Na Tingquan;Xu Hailiang;Wen Rongyu(General Steelmaking Plant of Angang Steel Co.,Ltd.,Anshan 114021,Liaoning,China;Ansteel Iron&Steel Research Institutes,Anshan 114009,Liaoning,China)

机构地区：[1]鞍钢股份有限公司炼钢总厂,辽宁鞍山114021 [2]鞍钢集团钢铁研究院,辽宁鞍山114009

出　　处：《鞍钢技术》2020年第6期43-46,共4页Angang Technology

摘　　要：为了提高含铝冷镦钢铸坯的合格率,对该钢种小方坯连铸过程中的水口结瘤成分进行了检测分析。根据检测结果并结合现场实际情况,优化了LF炉顶渣组成和造渣料配比及保护浇铸工艺,有效地解决了含铝冷墩钢水口结瘤问题,实现了单中包11罐连浇顺行,铸坯合格率从97.78%提高到98.12%以上。In order to improve the pass rate of a casting blank for producing the cold headed steel containing aluminum by billet continuous casting,the compositions in substances leading to clogging occurred at a nozzle in continuous casting process were analyzed based on testing.After that according to analytical results together with actual operations on the site,such measures as optimizing the component in top slag and the matching ratio of slag-preparing materials in LF and optimizing protective casting process were taken.As a result,the clogging problem was effectively solved.So the caster could be casting smoothly and continuously 11 heats of molten steel by single-middle ladle and then the pass rate of casting blanks was improved to more than 98.12%from 97.78%.

关 键 词：含铝冷镦钢 小方坯 水口结瘤 夹杂物 

分 类 号：TF777[冶金工程—钢铁冶金]