高拉速薄板坯连铸中碳钢保护渣开发与应用  

Development and application of mold flux for medium carbon steel in high speed thin slab continuous casting

作　　者：朱立光 袁志鹏 肖鹏程 单庆林 张军国 ZHU Li-guang;YUAN Zhi-peng;XIAO Peng-cheng;SHAN Qing-lin;ZHANG Jun-guo(College of Metallurgy and Energy,Key Laboratory for Advanced Metallurgy Technology,Hebei Province High Quality Steel Continuous Casting Engineering Technology Research Center,North China University of Science and Technology University,Tangshan 063009,Hebei,China;Hebei Iron and Steel Group Tanggang Co.,Ltd.,No.1 Steel Rolling Mill,Tangshan 063016,Hebei,China)

机构地区：[1]华北理工大学冶金与能源学院,河北省现代冶金技术重点实验室,河北省高品质钢连铸工程技术研究中心,河北唐山063009 [2]河北钢铁集团唐钢有限责任公司第一钢轧厂,河北唐山063016

出　　处：《连铸》2020年第1期51-55,共5页Continuous Casting

基　　金：国家自然科学基金项目(51774141,51904107);河北省教育厅青年拔尖人才计划项目(J2019041);唐山市科技计划项目(19130228g);河北省研究生创新资助项目(CXZZBS2019141)。

摘　　要：针对在高拉速情况下薄板坯连铸过程中频繁出现"冷齿"、黏结以及铸坯表面纵裂纹较多等问题,依据中碳钢凝固收缩特性并结合现场实际生产情况,开发了一种适合在高拉速情况下薄板坯中碳钢连铸用保护渣。生产实践表明,在拉速提高后,使用新型保护渣基本避免了铸坯表面纵裂纹的产生,也无"冷齿"、黏结等报警现象出现,铸坯质量显著提高,完全满足生产要求。In view of the frequent occurrence of"cold teeth",bonding and more longitudinal cracks on the slab surface in the process of thin slab continuous casting at high casting speed. According to the solidification shrinkage characteristics of medium carbon steel and the actual production situation in the field,a kind of mold flux suitable for thin slab medium carbon steel continuous casting at high casting speed was developed. The production practice showed that with the increase of casting speed,the longitudinal cracks on the slab surface were basically avoided by using the new mold flux,and there were no alarm phenomena such as"cold teeth"and bonding. The quality of the slab was improved remarkably,which fully met the production requirements.

关 键 词：高拉速 薄板坯连铸 中碳钢 保护渣 

分 类 号：TF777.7[冶金工程—钢铁冶金]