Simulation of Free Surface in a Continuous Casting Mould and Structural Optimization of a Submerged Entry Nozzle
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摘要: 以某公司矩形坯连铸机结晶器为研究对象,利用数值模拟和物理模拟相结合的方法,对结晶器内自由液面流动和流场进行系统分析,分别研究不同出口面积比、不同浸入深度、不同水口倾角等条件下结晶器内钢液流动状态,并对相应的工艺参数进行优化。结果表明,对于断面为150 mm×440 mm的矩形坯,最优的结晶器浸入式水口出口面积比为2.42,内径30 mm,侧开孔角度25°。Abstract: By taking a continuous casting mould for rectangular slab production in a certain steel mill as the research subject,flow and flow fields of the free surface were systematically analyzed,flow conditions affected by different exit area ratio,immersion depth,and inclination of the submerged entry nozzle(SEN) were studied,and corresponding process parameters were optimized through numerical and physical simulation.Results show that for the rectangular slab with a 150 mm×440 mm section,the optimum exit area ratio,inner diameter and side opening angle of the SEN should be 2.42,30 mm and 25° respectively.
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