应用FEM数值模拟优化连铸结晶器

USE OF FEM SIMULATION TO OPTIMIZE CONTINUOUS CASTING MOULDS

研究了应用FEM数值模拟优化连铸过程和结晶器.结晶器的优化设计通常从连铸过程中的稳态模拟开始.根据理论数据,使用边界条件来确保计算过程尽可能地接近实际;物理特性的使用以及在连铸过程中记录下的测量数据使计算得到调整并适应于连铸实际工作条件.应用这些初期的基础计算,可进一步地模拟冷却参数、结晶器材质和镀层改变对结晶器所造成的影响.使用FEM软件计算,除了可以优化连铸过程,还可以提高结晶器寿命,同时提高连铸产品的质量.在考虑结晶器热力学问题的同时,还应考虑使用为确定母材和钢坯应力的热结构分析法,以及为模拟熔化流动和冷却水设计的CFD软件(计算流体动力学)和FSI软件(流体结构相互作用模拟),这些分析方法得到了越来越广泛的应用.

The paper reports about work on the optimization of continuous casting processes and moulds using FEM simulation Mould design optimization usually starts with a simulation of the steadystate conditions in the mould during casting process Starting from theoretical sets of data, the boundary conditions utilized to ensure a computational approach as true to practices and above all the measured data recorded during casting, making it possible for the calculation to be adjusted to the actual service conditions on a caster Using these initial basic calculations it becomes possible to simulate the effects of cooling parameter variations, changes of the mould material and of coatings on the behavior of a mould while in service Besides optimization of the casting process the objective of these FEM calculations is to improve mould life as well as cast product quality