天铁炼钢厂四流中间包流场的水模实验及优化

介绍了天铁炼钢厂中间包水模实验原理和过程，分析了斜、直、圆三种型式挡渣墙模拟结果，提出了合理的挡渣控流方案，在生产实践中使用效果良好。     

中间包CaO质陶瓷过滤器滤除夹杂效果的研究

对鞍钢三炼钢厂中间包应用的CaO质陶瓷过滤器进行了实验研究，从装有陶瓷过滤器和未装陶瓷过滤器的挡墙侧水口上方及各自的连铸坯中取样，并用电解法和吸收光度法测定了夹杂物的总含量及分量。实验结果表明，陶瓷过滤器对于滤除钢液中的Al2O3、SiO2夹杂作用显著。     

新钢板坯连铸中间包采用控流槽的水模拟实验

通过板坯连铸中间包水模拟实验,表明新型控流装置--控流槽可大大改善中间包内流体的流动特征参数和流动轨迹,并具有防止卷吸气体作用.     

板坯连铸中间包的改造及应用效果

根据生产实际情况与降本增效的要求，对板坯连铸机使用的中间包在浇注工艺和使用中存在的问题进行了分析，提出了改造方案并进行了成功改造，目前使用效果良好，达到了预期的目的。     

Water modeling of molten steel flow in a multi-strand tundish with gas blowing

Fluid flow characteristics in a four-strand tundish with gas blowing were studied by water modeling experiments.It is found that gas blowing can greatly improve the flow characteristics in the tundish with a turbulence inhibitor.It dramatically increases the peak concentration time,and greatly decreases the dead volume,and reduces the minimum residence time.The gas blowing location,gas flow rate,and porous plug area greatly influence the flow characteristics in the tundish;the gas blowing location near t...     

基于中包钢水连续测温的二冷配水控制模型与系统

以黑体空腔式中间包钢水连续测温系统所实时获取的钢水温度为基础,建立了板坯传热微分方程和二冷动态配水模型,确定了水量、拉速和过热度三者的关系,设计了基于中间包钢水连续测温的二冷配水控制系统。现场应用表明：所建立的模型有效合理,所开发的控制系统稳定可靠,均能够满足现场生产需要。     

板坯连铸中间包结构优化的研究

结合某公司双冲击点板坯中间包生产现状,利用水模实验对中间包内钢水流动特性进行了研究.结果表明：原中间包结构存在明显的短路流,钢水停留时间偏短,死区体积分率偏高,不利于夹杂物上浮去除.同时,由于在高度较大的两湍流控制器间钢水不能流出,影响金属收得率.这种具有双冲击点的中间包,应按照对称的两个单流板坯中间包进行结构优化.采用小高度湍流控制器加上下挡墙的控流方式时,由于钢水流经路径增长和全混流体积分率增加,响应时间增长,死区体积分率显著减小至15%以下,有利于夹杂物上浮去除.同时,将小高度湍流控制器和门式开孔导流坝相结合,残钢量显著减小,有利于提高金属收得率.     

Online forecasting model of tundish nozzle clogging

A nozzle clogging online forecasting model based on hydrodynamics engineering was developed, in which the actual flow rate was calculated from the mold width, thickness, and casting speed. There is a linear relationship between the theoretical flow rate and the slide gate opening ratio as the molten steel level, argon flow rate, and the top slag weight are kept constant, and the relationship can be obtained by regression of the data collected at the beginning of the first heat in each casting sequence when the nozzle clogging does not occur. Then, during the casting, the theoretical flow rate can be calculated at intervals of one second. Comparing the theoretical flow rate with the actual flow rate, the online nozzle clogging ratio can be obtained at intervals of one second. The computer model based on the conception of the nozzle clogging ratio can display the degree of the nozzle clogging intuitively.     

耐火材料制品的温度和热应力分析研究

针对两种典型耐火材料制品,利用有限元分析软件,使用APDL语言编写程序,研究了其钢包和中间包的温度和热应力分布规律.同时对其结构进行了优化,优化后的效果明显,有效地提高了其使用寿命.     

连铸中间包不断流更换定径水口技术的应用

广钢集团电炉炼钢厂（以下简称电炉厂）采用连铸中间包定径水口不断流快速更换技术，可在0．1s内将定径水口更换完毕。更换后上、下水口的中心线误差小于0．1mm，避免了水口烧坏、浸蚀过大造成的拉速过快及漏钢事故，稳定了拉速，连铸坯合格率由98．22％提高到99．81％。