电渣熔铸过程中渣池热电场耦合模拟研究

电渣熔铸过程中的渣池是一个集热场、电磁场、流场等于一体的复杂体系．各种场之间是相互影响的．且整个体系的边界条件非常复杂、本文通过将渣池内的对流传热转化为传导传热问题．在此前提下,对渣池的热电场传输现象进行了分析．同时对自耗电极、渣壳、结晶器、渣金界面等渣池热电传输边界条件作了合理的处理．使用大型有限元分析软件ANSYS对渣池的热电场进行了研究．模拟获得了渣池的电场和温度场分布图．在此基础上研究了两种场的分布特点．同时提出作为熔铸过程中主要产热区的渣池是由高热源区和低热源区所组成的观点．对调整电渣熔铸过程中工艺参数、稳定熔铸过程具有一定的指导意义．

Research on Coupling Simulation about Slag Pool's Thermoelectricity Field in The Process of Electroslag Casting

The slag pool of electroslag casting is a complex system, which is composed of thermal field,(electromagnetic) field, fluid field and so on. At the same time, system's boundary conditions are very (complicated.) In this paper, the (problem) of convection heat transfer in the slag pool is transformed into the (problem) of conduction heat transfer. On this premise, the phenomena of thermoelectricity transmission in the slag pool are analyzed. And its boundary conditions are dealt reasonably with consumable electrode, slag hell mould and slag pool. ANSYS, a FEM analysis software is applied to study the thermal field and electric field. We get the thermal field and electric field's distribution figure by simulation. On the basis of above study, we learn the specialty in two fields, and bring forward a point that the slag pool is composed of high heat source area and low heat source area. Some experiences are gained which can instruct us to adjust technological parameters and stabilize the process of electroslag casting.