文献类型：期刊文献

中文题名：包晶钢连铸保护渣固渣膜凝固密度演变研究

英文题名：Density evolution of solid films of mold fluxes for peritectic steel continuous casting

作者：龙潇 龙绍檑 何生平

第一作者：龙潇

机构：[1]贵州理工学院材料与能源工程学院,贵州贵阳550003;[2]重庆大学材料科学与工程学院,重庆400044

第一机构：贵州理工学院材料与能源工程学院

年份：2020

期号：3

起止页码：39-43

中文期刊名：炼钢

外文期刊名：Steelmaking

收录：北大核心:【北大核心2017】；

基金：国家自然科学基金项目(51904083,U1660204,51874057);贵州省基础研究计划(科学技术基金)项目(黔科合基础[2020]1Y221);贵州理工学院高层次人才科研启动经费项目(XJGC20190963)。

语种：中文

中文关键词：保护渣;固渣膜;密度;结晶

外文关键词：mold fluxes;solid slag film;density;crystallization

摘要：连铸保护渣固渣膜凝固结构及演变对保护渣控制传热至关重要。选取生产现场应用的高碱度及超高碱度保护渣,使用小尺寸大宽厚比水冷铜探头获取了不同液渣温度及凝固时间下的渣膜,检测了不同条件下获得固渣膜的密度演变规律,并使用密度演变法评价了渣膜凝固生长的稳定性及渣膜凝固析晶规律。固渣膜密度演变结果与渣膜结构对应较好,使用密度法评价得到的固渣膜凝固稳定性与对应保护渣的现场使用状况符合。
The structure of solid mold flux films plays a key role in heat flux control in continuous casting. A high-basicity and an ultrahigh-basicity mold fluxes were chosen as the basis of this study. Solid slag films of mold fluxes were solidified by immersing a small water-cooled copper probe into liquid fluxes,different liquid flux temperatures and probe immersion periods were also adopted. The density evolution of solid slag films was measured and discussed,the stability of film growing and process of crystal precipitation were also evaluated using density data. The results indicated that the density data could reveal the structure evolution of solid slag film. The stability of film growing evaluated using the density data had a good conformance to the flux performance in continuous casting.