Transport Phenomena in a Beam-Blank Continuous Casting Mold and a New Design of Submerged Entry Nozzle
A three-dimensional full-coupled mathematical model is established to study the fluid flow,heat transfer and solidification in a 450mm×350mm×90mm beam-blank mold with two different types of submerged entry nozzle(SEN),namely single-port straight SEN and three-port radial flow SEN.Water modeling experiments,industrial trials and public results available in literature are performed to validate the numerical results.The results show that,with the straight SEN which has been widely applied in beam-blank continuous casting,there is a very inactive top free surface in the mold which level fluctuation magnitude is less than 1mm and velocity magnitude is far from a reasonable interval,and the shell thickness distribution at the mold exit is very uneven,thick at the web but thin at the fillet.Moreover,there exists a “wavy contour at the flange due to the washing effect of the off-center molten steel jet washing effect.While with the new designed radial flow SEN,a suitable meniscus status and a more uniform shell thickness at the mold exit can be obtained,which is helpful to avoid the breakouts caused by the rupture of thin fillet and the flange depression.The “self-braking effect caused by two radial flow SENs provides good flow stability at the web center.
beam-blank continuous casting transport phenomena submerged entry nozzle numerical simulation
Mianguang XU Miaoyong ZHU
School of Materials and Metallurgy College,Northeastern University,Shenyang 110819,Liaoning,China
国际会议
the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)
北京
英文
645-648
2015-05-12（万方平台首次上网日期，不代表论文的发表时间）