铜钢复合冷却壁传热能力及热变形分析

Analysis on Cooling Capacity and Thermal Deformation of Copper-Steel Composite Cooling Stave

通过数值模拟的方法,对铜钢复合冷却壁的传热能力,以及在高热负荷下铜钢复合冷却壁的变形情况进行了分析。结果表明:①与铜冷却壁相比,铜钢复合冷却壁的传热能力仅下降1.17%;冷却水对流换热在冷却系统中占绝对主导地位,99%的热量是通过冷却水带走,距离热面最近的水道铜面起主要作用。②铜钢复合冷却壁抗热变形能力较好,在无渣皮保护的极限工作条件下,铜钢复合冷却壁的热变形量大约为铜冷却壁的一半,有较好的抗变形能力;铜钢复合冷却壁的界面处的应力值较大,爆炸焊接结合的铜钢材料,在界面处行成波状结合界面,很好地保证了界面强度。

The heat transfer capacity of copper-steel composite cooling stave and its deformation under high thermal load are analyzed through numerical simulation. The results show that ： （ 1 ） the heat transfer capacity of copper-steel composite cooling stave decreases by only 1.17% as compared with copper stave ; the convective heat exchange effect of cooling water absolutely dominant the function of the cooling system, 99% of the heat is taken away by the cooling water, and the copper surface of the water path which is closest to the heat surface plays a major role in cooling. （2） the thermal deformation resistant capacity of the copper-steel composite cooling stave is better; under the limit working condition, i.e. no slag skull protec- tion, and the thermal deformation of the copper-steel composite cooling stave is just about half of that of the copper stave, indicating better resistance to deformation. Furthermore, the stress at the interface of copper-steel composite cooling stave is higher and waved joint between copper and steel form by explosive welding reliably ensures the strength of interface.