The LIMMCAST Program at HZDR:Modelling of Fluid Flow and Transport Phenomena in the Continuous Casting Process

作     者：Gerbeth Gunter Eckert Sven Stefani Frank Timmel Klaus Wondrak Thomas 

作者机构：Helmholtz-Zentrum Dresden-RossendorfP.O.Box 51011901314 DresdenGermany 

出 版 物：《Journal of Iron and Steel Research International》 (钢铁研究学报(英文版))

年 卷 期：2012年第19卷第S1期

页      面：1-8页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Item Sponsored by Deutsche Forschungsgemeinschaft (DFG) in frame of the SFB 609"Electromagnetic Flow Control in Metallurgy Crystal Growth and Electrochemistry" 

主　　题：continuous casting liquid metal model mould flow flow measurements two-phase flow magnetic flow tomography ultrasound Doppler method 

摘      要：Model experiments with low melting point liquid metals are an important tool to investigate the flow structure and related transport processes in melt flows relevant for metallurgical *** present the new experimental facility LIMMCAST for modelling the continuous casting process of steel using the alloy SnBi at temperatures of 200-400℃.The parameters of the facility and the dimensions of the test sections will be given,and the possibilities for flow investigations in tundish,submerged entry nozzle and mould will be *** addition,the smaller set-up Mini-LIMMCAST will be presented,which works with the room-temperature liquid alloy *** main value of cold metal laboratory experiments consists in the capabilities to obtain quantitative flow measurements with a reasonable spatial and temporal *** ultrasonic and electromagnetic techniques for measuring the velocity in liquid metal flows came up during the last decade allowing for a satisfying characterisation of flow quantities in the considered temperature range up to 400℃.First results from LIMMCAST and Mini-LIMMCAST will be presented covering the following phenomena:fully contacfless electromagnetic tomography of the flow in the mould,flow monitoring by a multitude of ultrasonic sensors,and analysis of the flow in the mould under the influence of an electromagnetic brake: intensification of the flow turbulence contrary to the expected flow damping,injection of argon bubbles through the stopper rod:occurrence of pressure oscillations.