首钢京唐3号铸机高拉速工艺研究与实践  

Study and Practice of High Casting Speed Technology on No.3 Slab Caster of Shougang Jingtang Steel

作　　者：景财良[1] 罗伯钢[1] 田志红[1] 

机构地区：[1]首钢京唐钢铁联合有限责任公司,河北唐山063200

出　　处：《钢铁》2014年第3期46-50,共5页Iron and Steel

摘　　要：为了实现首钢京唐3号铸机拉速达到2.5m/min的目标,在现有连铸参数的基础上分别对结晶器冷却水量、保护渣成分和浸入式水口结构进行了优化。工业试验结果表明:参数优化后,拉速可稳定保持在2.3m/min;结晶器液面波动得到明显改善,宽窄面平均热流稳定,铜板温度场合理,液渣层厚度适宜,保护渣消耗量有所增加,为拉速进一步提高提供了试验依据。In order to achieve the casting speed of 2.5 m/min on No. 3 slab caster of Shougang Jingtang steel group, the mold cooling density, mold flux composition and structure of submerged entry nozzle were optimized based on the current casting parameters. Results of industry practice showed that, the casting speed could be held at 2.3 m/min stably after the parameters optimized. The surface oscillation was improved obviously, the average heat flux of broad and narrow face was stable, the mold copper temperature filed was rational, the thickness of liquid flux was suitable and the powder consumption was increased. The casting speed could be increased from these industry practice results.

关 键 词：高拉速 液面波动 热流 浸入式水口 保护渣 

分 类 号：TF777[冶金工程—钢铁冶金] TF341.6