转炉炉壳温度场的有限元分析

Finite element analysis of temperature field of converter shell

为防止转炉炉壳因高温蠕变产生过大变形,利用ANSYS软件,对国内某炼钢厂的大型转炉炉役前后期炉壳的温度场进行了分析。分析结果表明:该转炉在炉役前期炉壳的最高温度达到437℃,接近炉壳的蠕变温度;炉役后期炉壳的炉身和上炉锥部分的温度均超过炉壳的蠕变温度,将会产生蠕变变形。因此,需要对炉壳炉身和上炉锥部分进行强制冷却降低温度,或增加溅渣护炉的溅渣层厚度来抑制炉壳温度过高。

In order to prevent large deformation of the converter shell caused by high temperature creep, the temperature field of the shell of the large-scale converter in a steel plant in China during its service period is an- alyzed with software Ansys. The analysis results show that the maximum temperature of the converter shell in service prophase reaches 437~C , which is near the furnace shell creep temperature; and the temperature of the furnace shell and the cone part in service anaphase exceeds the furnace shell creep temperature, which will pro- duce creep deformation. Therefore, forced cooling is needed to reduce the temperature of the furnace shell and the upper furnace cone, or increase the slag splashing layer thickness of slag splashing to restrain the excessive temperature of furnace shell.