电渣重熔板锭的温度场计算

Computation on Temperature Fields of ESR Slab Ingot

建立了电渣重熔板锭过程的非稳态模型,计算了板锭重熔过程中的温度场,得到不同熔速、不同重熔时刻的熔池深度;分析了影响熔池深度的主要因素及板锭的凝固规律,计算表明:熔速是影响熔池深度的最大因素,当铸锭到达一定高度时,系统处于准稳定状态,熔池深度不再变化。同时铸锭底部的冷却条件对熔池深度影响不大。

An unsteady - state model of dectroslag remelting （ESR） slab ingot is established, and the temperature field of slab ingot is calculated. The metal pool depth at different height of ingot is obtained with different melting velocity. The factors influencing the pool depth and the solidification behavior of ingot are discussed. The results show that melting velocity is the most important influence factor for the pool depth, the system is in the quasi - steady state and the pool depth doesn＇t change when the ingot gets to a certain height. Meanwhile, the cooling conditions in the bottom of ingot have little effect on the pool depth.