摘要
针对氩气泡在板坯连铸结晶器中的运动行为,以190 mm×1 900 mm板坯连铸结晶器原型为研究对象,采用水力学模型及数值模拟的方法,重点研究了拉速为1.7 m/min时不同水口吹气量对结晶器内气泡大小、气泡分布、液面波动、渣-金行为等的影响。研究结果表明:随着水口吹气量增加,气泡尺寸逐渐增加,结晶器窄边气泡数量不断减少,气泡大都聚集在水口附近上浮,水口吹气量是引起乳化卷渣、水口附近液面裸露及卷渣等的主要因素。
Aiming at the behavior of Argon Bubbles in Slab continuous casting mold with cast speed 1.7m/min,the influence of blowing argon flow rate on bubble size,bubble distribution,the liquid surface level oscillation and behaviors of slag-melt were investigated by using water model and numerical simulation,the 190mm×1900mm slab mold is taken as an object of study.The results show that with increasing gas flow rate in nozzle the size of bubbles in mold increased,the bubble numbers near the narrow face of the mold decreased and most of the bubbles float upward to the surface of the mold in regions around the submerged entry nozzle.The emulsified slag entrapment,metal level bareness and slag entrapment near the nozzle were mainly caused by blowing gas flow rate.
出处
《钢铁》
CAS
CSCD
北大核心
2010年第4期20-25,共6页
Iron and Steel
关键词
板坯连铸
结晶器
氩气泡
物理模拟
数值模拟
continuous casting
mold
argon bubble
physical simulation
numerical simulation
