板坯单流连铸中间包的流场优化  

OPTIMIZING OF FLOW FIELD OF SINGLE STRAND TUNDISH IN SLAB CONTINUOUS CASTING

作　　者：安航航[1] 包燕平[1] 李太全[2] 贾楠[3] 

机构地区：[1]北京科技大学 [2]邯郸钢铁集团公司 [3]太原钢铁集团公司

出　　处：《河南冶金》2009年第4期13-16,34,共5页Henan Metallurgy

基　　金：国家科技支撑计划专资助课题(2006BAE03A06-1)

摘　　要：通过水模型实验,针对现场中间包流场存在的问题,对影响流场的关键因素进行正交优化试验并验证;本文主要在优化后最佳方案的基础上,对不同插入深度和湍流抑制器对中间包流场的影响进行研究,并研究了在非稳态浇注过程中,不同工况下中间包钢液最低液位的变化。试验结果表明:综合考虑RTD曲线和流场显示,保持中间包液面稳定,拉速为1.2m/m in,在正交优化的最佳方案的情况下,采用圆形湍流抑制器,插入深度为90mm时,中间包内流场较好,死区比例小,平均停留时间长;非稳态浇注过程中采用有坝和圆形湍流抑制器的中间包时,钢液的最低液位比较合理。Through orthogonal optimization tests flow control device on factors of influencing flow field in the tundish was optimized after existing problems on flow field were found by water model experiments;Based on optimized optimal plan,different insertion depths and turbulence inhibitors on influencing of flow field had been studied and during unsteady casting in different conditions the lowest liquid levelchange of liquid steel change was also investigated, rlhe result showed ：considering RTD and flow field display synthetically,while liquid level stayed stable,casting speed was 1.2m/min and based on orthogonal optimized optimal plan,adopting circular turbulence inhibitor and insertion depth being 90mm,the flow field was better,dead zone was few and average residence duration was longer. During unsteady casting while circular turbulence inhibitor and dam was adopted in the tundish,the lowest liquid level of liquid steel was more reasonable.

关 键 词：中间包流场 插入深度 湍流抑制器 非稳态浇注 

分 类 号：TF777[冶金工程—钢铁冶金] TF341.602