步进梁式加热炉中步进梁立柱管热流固耦合分析  

Analysis on Thermo-Fluid-Solid Coupling for Walking Beam Pipe in Walking Beam Heating-Furnace

作　　者：金晓宏[1] 罗定 张伊波[2] 杨科[1] 

机构地区：[1]武汉科技大学机械自动化学院,湖北武汉430081 [2]武汉钢铁股份有限公司设备维修总厂,湖北武汉430081

出　　处：《铸造技术》2016年第2期295-298,共4页Foundry Technology

摘　　要：以热轧厂加热炉中步进梁立柱管为模型,考虑在均温为1 573 K的加热炉内,立柱管在流体冷却过程中的共轭传热问题。建立了耐火材料、立柱和冷却介质的三维耦合模型。采用单向直接耦合分析法,对立柱中流体流动传热及立柱管耦合换热过程进行数值模拟。通过计算得到步进梁立柱管的温度分布图及其分布规律,从而找出立柱管危险截面的位置。仿真结果表明:立柱管在经过加热冷却后,温度最终达到510 K左右,符合管道温度设计要求,但管壁温度分布不均,局部出现明显高温,可能导致其破裂失效。Taking the walking beam pipe of heating-furnace in the hot rolling mill as object, the conjugate heat transfer for the pipe in the process of cooling fluid was analyzed in the condition that the average temperature of heating furnace is 1573 K. A three dimensional coupling model of refractory, column and cooling medium was built. By using one-way direct coupling analysis method, fluid flow, heat transfer and coupling heat transfer of pipe were simulated. With the results of calculation, temperature contours and distribution rule of walking beam pipe were obtained and the exact dangerous section was obtained. The results show that temperature rises to about 510 K eventually after heating and cooling, which meets the requirement of temperature for the pipe. However, because of uneven distribution of temperature at outer surface of the pipe, local temperature is apparently higher and maybe leads to fracture.

关 键 词：热流固耦合 步进梁 加热炉 共轭传热 

分 类 号：TG307[金属学及工艺—金属压力加工]