薄板坯连铸浸入式水口的结构优化

Structure optimization of submerged entry nozzle of thin-slab continuous casting

针对薄板坯连铸的生产条件,采用正交设计的水模型试验和数值模拟,通过测量结晶器液面波高和注流冲击深度,研究了浸入式水口出口面积比、出口倾角、浸入深度和拉速对结晶器流场的影响。结果表明,浸入式水口出口面积比为1.4、出口倾角为50°、浸入深度为240 mm时,可以满足高拉速生产的需要。

In light of the production condition of thin-slab continuous casting, water model experiment and numerical simulation are employed to study the effects of SEN outlet area ratio, outlet angle, immersion depth, and pulling rate on the fluid flow in mould by measuring wave amplitude and impact depth. It is found that when the outlet area ratio is 1.4, outlet angle 50°, and immersion depth 240 mm, SEN is optimal, meeting the requirements of high pulling rate production.