含铝冷镦钢连铸塞棒结瘤分析和预防工艺措施

特殊钢 ›› 2008, Vol. 29 ›› Issue (3): 47-49.

含铝冷镦钢连铸塞棒结瘤分析和预防工艺措施

贺道中¹, 李光强²

1湖南工业大学冶金校区，株洲412000;
2武汉科技大学钢铁冶金及资源利用教育部重点实验室，武汉430081

收稿日期:2007-11-29 出版日期:2008-06-01 发布日期:2022-12-22
作者简介:贺道中(1967-),男，硕士，副教授，1991年重庆大学毕业，现代炼钢工艺研究

Analysis on Stopper Clogging Mechanism and Preventive Measures for Continuous Casting Aluminum Bearing Cold Heading Steel

He Daozhong¹, Li Guangqiang²

1 College of Metallurgy,Hunan University of Technology,Zhuzhou 412000;
2 Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081

Received:2007-11-29 Published:2008-06-01 Online:2022-12-22

摘要/Abstract

摘要： 通过对连铸0.03%～0.06%Al冷镦钢中间包浸入式水口、塞棒耐火材料和结瘤物的检测和结瘤形成机理的分析,提出防止塞棒结瘤的工艺措施:采用出钢流加高铝锰铁合金和钢包吹氩喂铝线;中间包用挡墙和高液位操作以促进Al₂O₃上浮;全程保护浇铸;控制精炼后T[O]≤15×10^-6;降低塞棒头部SiO₂含量,提高ZrO₂含量。通过改进工艺操作,连铸塞棒水口结瘤明显减少,平均连浇炉数≥12炉。

关键词: 含铝冷镦钢, 连铸, 塞棒结瘤, 预防措施

Abstract: The process measures to prevent stopper clogging have been presented by measuring materials of stopper and tundish submerged entry nozale and clogging for casting0.03%~0.06%Al cold heading steel and analysis on forma- tion mechanism of clogging. The measures are to adopted adding high AlMnFe alloy in tapping flow and feeding Al wire with argon blowing; tundish with dam and high liquid lever operation to promote Al₂O₃ floating; whole process protective cast- ing;controling T[0]≤15×10^-6after refining; decreasing Si0₂ content in head of stopper and increasing ZrO₂ content. The casting stopper nozzle clogging obviously decreased by using improved process operation,the average continuous casting heats were ≥12 heats.

Key words: Aluminum Bearing Cold Heading Steel, Continuous Casting, Stopper Clogging, Preventive Measures

贺道中, 李光强. 含铝冷镦钢连铸塞棒结瘤分析和预防工艺措施[J]. 特殊钢, 2008, 29(3): 47-49.

He Daozhong, Li Guangqiang². Analysis on Stopper Clogging Mechanism and Preventive Measures for Continuous Casting Aluminum Bearing Cold Heading Steel[J]. Special Steel, 2008, 29(3): 47-49.