摘要
介绍了铝脱氧与整体塞棒式中间包保护浇铸工艺的应用情况。转炉铝脱氧采用了铝锰铁,并通过精炼出站前向钢水中喂钙线的方式对夹杂物进行钙处理,提高夹杂物的上浮率。同时为避免夹杂物在水口聚集堵塞水口,引起浇铸事故,配套使用了塞棒式中间包,确保浇铸过程的平稳顺行。工艺优化后,整个冶炼及连铸过程稳定顺行,检验证明铝脱氧工艺可显著提高钢中的脱氧效率,成品中氧质量分数小于20×10-6,组织中夹杂物等级明显降低。
A production practice of aluminum deoxidation process combining with a stopper tundish was introduced in this paper.Aluminum ferromanganese was added as deoxidizer into the converter and calcium wires were introduced for inclusions calcium treatment into ladle furnace before the refining ending.Stopper tundish was applied to avoid casting accident of nozzle clogging caused by inclusions gathering around the nozzle so as to ensure the steady of casting process.Through the application of optimized process,the steelmaking and casting operations were stale and highly effective,and the test results of final product showed that the aluminum deoxidation could improve the steel deoxidation ratio remarkably with oxygen mass fraction less than 20×10-6 and the inclusion level in the microstructure lowered evidently.
出处
《炼钢》
CAS
北大核心
2014年第3期28-32,共5页
Steelmaking
关键词
铝脱氧
钙处理
塞棒式中间包
保护浇铸
aluminum deoxidation
calcium treatment
stopper tundish
protective casting
