摘要
通过建立吹氩结晶器水模型,研究了吹氩流量、拉坯速度、液态保护渣初始黏度对结晶器内液态保护渣流动性的影响。结果表明,吹氩流量较小时,水口附近区域液态保护渣含气率高,液态保护渣表观黏度大,随着吹氩流量的增大,液态保护渣黏度峰值向远离水口方向偏移,同时沿结晶器宽度方向上液态保护渣表观黏度差值和液态保护渣的流动性差异性均有所增大;随着拉坯速度的增大,水口附近区域的保护渣表观黏度呈下降趋势,靠近结晶器窄面区域的保护渣表观黏度呈上升趋势;随着液态保护渣初始黏度的增大,水口附近区域保护渣表观黏度呈先上升后下降的趋势,靠近结晶器窄面区域保护渣表观黏度则变化不显著。
By establishing the water model of argon blowing mold,the effects of argon blowing rate,casting speed and initial viscosity of liquid flux on the fluidity of liquid flux in mold were studied.The results show that when the argon blowing rate is small,the gas content in liquid flux near the nozzle region is high and the apparent viscosity of liquid flux is large;with the increase of argon blowing rate,the peak of apparent viscosity of liquid flux shifts away from the nozzle,and at the same time,the difference in apparent viscosity and fluidity of liquid flux along the width of mold both increase.With the increase of casting speed,the apparent viscosity of liquid flux near the nozzle shows a downward trend,while the corresponding value of liquid flux near the narrow face shows an upward trend.Moreover,with the increase of initial flux viscosity,the apparent viscosity of the liquid flux near the nozzle first increases and then decreases,while the flux viscosity near the narrow face does not change significantly.
作者
黄思思
程常桂
张金磊
李阳
刘亮
Huang Sisi;Cheng Changgui;Zhang Jinlei;Li Yang;Liu Liang(Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking,Wuhan University of Science and Technology,Wuhan 430081,China)
出处
《武汉科技大学学报》
CAS
北大核心
2022年第4期241-247,共7页
Journal of Wuhan University of Science and Technology
基金
国家自然科学基金资助项目(51874215,51974213).
关键词
吹氩
结晶器
液态保护渣
表观黏度
工艺参数
argon blowing
mold
liquid flux
apparent viscosity
process parameter
