高炉铜冷却壁的热变形

Thermal distortion of blast furnace copper staves

根据某高炉使用的镶砖铜冷却壁建立了全尺寸三维模型。以有限元为手段,采用热、结构耦合的方法计算了高温状态下铜冷却壁的应力和应变,计算结果与热态实测数据基本吻合。计算结果表明:铜冷却壁在高炉炉况下的基体温度以及由此产生的热应力都不足以使其很快产生裂纹。通过计算比较得出,铜冷却壁在高炉中的热变形趋势不仅与其温度分布有关,也与安装冷却壁的方式和定位销位置有关,计算结果为高炉铜冷却壁的安装设计提供了依据。

Full-size three-dimensional model was established according to copper stave with insert in a certain BF. Based on the finite element analysis, the stress and strain of the copper stave under a high temperature were calculated with the methods of thermo-structure coupling and the results are almost identical with actual measured data. The results indicate that neither temperature nor heat stress of copper stave under a BF operating condition are the stress formed sufficient to cause crack quickly. Comparison of the calculation values show that the trend of thermal distortion of the copper stave used in BF can be affected by temperature distribution, installation manner and the location of bolt. All these provide a basis for the design and installation of copper stave.