双流板坯连铸中间包结构优化及改造

Structure optimization and transformation of two-strand slab continuous casting tundish

中间包作为连铸的关键设备,对保证连铸生产发挥着重要作用。为了减少停浇过程中间包的余钢量,提高金属收得率,以某厂转炉车间双流板坯连铸中间包为模型,利用数值模拟的手段研究中间包流场温度场。根据研究结果,优化设计了中间包结构,为现场中间包结构改造提供优化方案,并介绍了新型中间包的砌筑改造及应用跟踪。改造后的中间包现场应用表明,结构优化能够减少余钢量,使余钢量由16~18t降至4~6t,显著提高了金属收得率。

As the key equipment in the continuous caster,the tundish plays an important role in ensuring continuous casting production.In order to reduce the residual steel in the tundish during the stop pouring process,improve the metal yield,the two-strand slab continuous casting tundish in a converter workshop is taken as a model,and the temperature field and the flow field in the tundish was studied by numerical simulation.According to the research results,the tundish structure is optimized,which provides the optimization scheme for the tundish structure transformation on site,and the masonry transformation and application tracking of the new tundish are introduced.The results show that optimization of the tundish structure can reduce the amount of residual steel.After optimization,the amount of residual steel is deceased from 16-18 tto 4-5 t.Thus the metal yield is significantly improved.