电磁出钢装置中填装料对固-液界面位置的影响  

Influence of Filler on the Solid-Liquid Interface Position in the Electromagnetic Steel-Tapping System

作　　者：李德军[1] 刘兴安[1] 王强[1] 欧阳任华[1] 柴海山[1] 赫冀成[1] 

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110004

出　　处：《钢铁研究学报》2012年第9期16-20,共5页Journal of Iron and Steel Research

基　　金：辽宁省科技厅科技计划项目(2008221015);教育部高等学科创新引智计划项目(B07015)

摘　　要：在电磁出钢系统中,为了提高感应加热效果以实现快速出钢,需将固-液界面控制在感应线圈的有效加热区内。设计了模拟钢包上水口处固-液界面测量装置,考察了上水口内在高中低碳钢的出钢温度分别为1 550、1 600、1 620℃时,铁碳合金颗粒的成分、形状、大小对固-液界面的影响规律。结果表明:使用铸铁填装料比使用铸钢填装料时固-液界面的下移量要大,并且成分的影响随着钢液温度的升高有增大的趋势;规则球形颗粒比不规则的砂形颗粒对固-液界面位置影响要大,而且固-液界面的下移量随着填装料粒径的增大而增大;选用粒径为2.0mm的铸铁颗粒作为填充料,当出钢温度为1 600和1 620℃时,固-液界面位置能够进入有效加热区;当出钢温度为1 550℃时,使用粒径为4.0mm的铸铁颗粒做填充料时,固-液界面位置也能够进入有效加热区。In the electromagnetic steel-tapping system,in order to improve the effect of the induction heating and realize quick steel-tapping,the solid-liquid interface position must be controlled within the induction heating effective zone.The measuring devices of the solid-liquid interface position in the ladle outlet were designed.When the tapping-steel temperature of low,mid,high carbon steel in upper nozzle were 1 550,1 600,1 620 ℃,the influence of the FeC alloy particles′ composition,shape,size on the solid-liquid interface position were investigated.The results are summarized as follows: When the cast iron particles are used as filler,the solid-liquid interface position is higher than the cast steel particles.With the increase of steel temperature,the influence of composition is also increasing.Comparing to the irregular sand particles,the influence of the rule spherical shape particles on the solid-liquid interface position is greater.Furthermore,it is found that the solid-liquid interface moves downward volume increases accordingly with the increase of particle size;When the steel tapping temperature are 1 600 and 1 620 ℃ and 2.0 mm diameter cast iron particles are used as filler,the solid-liquid interface position can be controlled within the effective heating zone,and when the steel temperature is 1 550 ℃and 4.0 mm diameter cast iron particles are used as filler,the solid-liquid interface position can also be controlled within the effective heating zone.

关 键 词：连铸 洁净钢 自动开浇 出钢 固-液界面 

分 类 号：TF341[冶金工程—冶金机械及自动化]