薄板坯连铸机新型浸入式水口  

New Subermerged Entry Nozzle in Thin Slab Caster

作　　者：包燕平[1] 田乃媛[1] 徐保美[1] 

机构地区：[1]北京科技大学冶金学院,北京100083

出　　处：《北京科技大学学报》2002年第3期262-265,共4页Journal of University of Science and Technology Beijing

基　　金：国家"九五"科技攻关项目(No.955230104)

摘　　要：基于相似原理，采用１：１的水模型，模拟了薄板坯连铸结晶器内钢液的流场．采用ＳＧ８００水工数据采集系统对结晶器内液面波动和注流冲击深度进行了定量测量．针对薄板坯连铸高拉速的需要，开发了一种新型的耗散型浸入式水口．通过研究耗散水日上下出口面积比、出口角度以及拉坯速度对结晶器液面波动和对结晶器窄边冲击情况的影响，找出了其中的变化规律，为优化耗散式水口的结构和工艺参数提供了理论依据．通过与普通双侧孔水口的试验比较，证明耗散型水口是一种适合薄板坯连铸高拉速生产的新型水口．Based on the Similarity criteria, series water modeling experiments have been carry out to investigate the fluid flow in the mould of thin slab continuous caster by 1:1 ratio water-modeling simulation systems. SG800 hydraulic test data sampling system is applied to investigate the wave amplitude and impe-tus. In order to satisfy the demand of thin slab caster at high speed, a new structure SEN ( Submerged Entry Nozzle)-Dissipation SEN have been invented. The effects of dissipation nozzle's structure, outlets' ratio of area, outlet angle and casting speed on fluid flow in the mould have been investigated. The experimental re-sults proved that the dissipation SEN could satify the need of fluid flow condition in the mould at high speed.

关 键 词：薄板坯连铸机 结晶器 浸入式水口 双侧孔水口 耗散型水口 钢液流动 

分 类 号：TF341.6[冶金工程—冶金机械及自动化] TF777.7