振动电极电渣重熔过程中流场、温度和熔池形状的参数化研究

Parameter study on fluid flow,temperature distribution and metal bath configuration in the vibrating electrode electroslag remelting process

文章探究了电极直径变化时电渣重熔系统温度场、速度场、液滴和熔池形状的变化规律。结果表明:随着电极直径的增大,渣池中的高温区开始由振动电极的正下方向电极两侧转移,高温区的范围逐渐扩大,渣池温度整体升高,渣池温度变得均匀。当渣厚为140mm时,随着电极直径由100mm增加到140mm时,水平振动下,渣池内最高温度增加了36K,渣池内平均温度增加了52K;无振动下,渣池内最高温度增加了39K,渣池内平均温度增加了54K;竖直振动下,渣池内最高温度增加了22K,渣池内平均温度增加了49K。另外,熔池形状变浅,糊状区变薄,熔池整体下移。

The article explores the change law of temperature field,velocity field,droplets and molten pool shape when vibrating mode,electrode diameter and slag thickness which are three important parameters in ESR changes,and then compares with no vibrating electroslag remelting process. With the increase of electrode diameter,the high temperature zone in slag pool transfers from the below of electrode to the both sides of the slag pool. When slag thickness is 140 mm and electrode diameter changes from 100 mm to 140 mm,the highest temperature in the slag pool increases by 36 K and the average temperature in the slag pool increases by 52 K under horizontal vibration,the highest temperature in the slag pool increases by 39 K and the average temperature in the slag pool increases by 54 K under no vibration,the highest temperature in the slag pool increases by 22 K and the average temperature in the slag pool increases by 49 K under vertical vibration. In addition,the molten pool shape becomes more shallow,mushy zone becomes thiner,molten pool moves down as a whole.