摘要
炉缸内铁水流动产生的剪应力对炉缸内衬的侵蚀有重要影响。为此,以流体力学有关理论为基础,建立了炉缸炉底三维流体数学模型,应用CFX软件,研究了不同时期的炉缸剪应力的变化;由于铁水环流对炉缸的侧壁以及炉缸侧壁与炉底交界部位的冲刷作用较强,因此在炉缸侧壁和炉底位置修砌一道环形档坝,观察其对炉底剪应力的影响。结果表明,炉底出铁口近端受到的剪应力较大,而在出铁口远端炉底剪切应力最小;炉底剪应力随着死铁层深度的增大而减小;增加档坝可以有效地减轻炉底受到的剪应力,炉底剪应力越大,增加档坝后减轻的炉底受到的剪应力值越大。
The shear stress generated by flowing of hot metal in BF has important effect on the erosion of hearth lining.By using the theory of fluid mechanics,the hearth bottom three-dimensional mathematical model of fluid was established,combined with the CFX software to study the changes in different periods of hearth shear stress.As hot metal circulating has stronger erosion on hearth sidewall and the junction of the hearth sidewall and the hearth bottom,analysis the impact on the bottom shear stress when add a gear dam on the hearth sidewall and the hearth bottom.The results show that：the shear stress is larger of proximal of the hearth taphole,the shear stress is minimum of distal of the hearth taphole.The bottom shear stress decreases with the increase of the depth of salamander;adding the gear dam can effectively reduce the hearth bottom wall shear,the larger the wall shear of hearth bottom,the bigger the wall shear value of the hearth bottom adding the gear dam.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2014年第11期6-10,共5页
Journal of Iron and Steel Research
关键词
档坝
炉缸
剪应力
死铁层
dam
hearth
wall shear
salamander
