Φ150mm圆坯连铸机提拉速实践.pdf

连铸①150mm圆坯连铸机提拉速实践李静敏1,李新文1,安航2,王睿2 (,河南,安阳456550;,北京100083) 摘要:建立凝固模型,通过理论分析研究了不同拉速和过热度对铸坯凝固过程的影响,并通过射钉试验对模型进行验证。。通过优化结晶器冷却、结晶器电磁搅拌以及二冷工艺的参数,,圆坯表面质量和铸坯内部质量良好,满足要求,但中间包钢液过热度及二冷冷却不均造成铸坯中心缩孔以及中间裂纹等铸坯质量不稳定。关键词:射钉试验:凝固传热模型;二冷优化;结晶器电磁搅拌,低倍质量 cPl50mm pulling speed practice round billetcontinuous casting maChlne U Jingrntnl,LI Xinwenl,AN Han92,WANG Rui2 (’nallFengbao Special ,Linzhou 456550,He’nan,China; andEcological Engineering School,UniversityofScienceandTechnologyBeijing,BeUing100083,China) Abstract:To establish themodel ofsolidification,Through thetheoretical analysis to study the differenteffects ofcasting speed andthe degree ofsuperheat on solidificationprocess,And theexperiment carried out tovalidate themodel through thenail。 Thistheoreticallyprove that Benzhu machine has 50mm sectioncastingspeedincreased test feasible。By optimizing theparameters ofthe cooling,the mold ic stirringand twocooling process,Casting speed increased ,the surfacequality ofbilletandround billetinternalquality good,To meet therequirements of,But theliquid steelintundish superheat and two cold caused by uneven shrinkageand intermediate billet center crackofbilletquality instability. Key words:Nail test;solidification andheat transfermodel;two coldoptimization;mold ic stirringtime