热镀锌锅内锌液流动、传热及组分运输特性分析  

Fluid Flow, Heat and Mass Transfer in Hot Dip Galvanizing Bath

作　　者：孙首群[1] 韦忠爽 卢华阳[2] 

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]上海宝信软件股份有限公司,上海201900

出　　处：《系统仿真学报》2017年第7期1538-1545,共8页Journal of System Simulation

基　　金：国家科技支撑计划(2015BAK16B04)

摘　　要：锌渣的产生是连续热镀锌过程中一种必然的冶金行为,影响着镀锌质量。渣体的产生与锌液物理场特性密切相关,除渣不当会引起更多的表面缺陷。通过构建三维粘性标准k-ε双方程湍流模型,根据具体的初始条件与边界条件,求解得到锌锅流域内流动、传热及组分运输规律,确定漩涡分布特性,观察点的仿真计算结果与实验结果基本吻合,证明了计算方法的准确性。通过理论计算可以有效预测锌锅内锌渣的分布规律以及除渣作业危险区,研究结果为热镀工艺的优化及除渣机器人的除渣设计提供理论依据和技术支持。Zinc dross is produced inevitably as a metallurgical phenomenon of continuous hot galvanizing process, and the quality of galvanizing is affected. The phenomenon is closely related to the physical field of molten zinc and more surface defects are easily produced if the zinc dross removal process is improperly handled. By constructing a three-dimensional viscous standard k-e two equation turbulence model, the fluid flow, heat and mass transfer law and the distribution regularities of flow vortex were obtained under the specific initial conditions and boundary conditions. The simulation results of the observation points are basically in agreement with the experimental results, and the accuracy of the calculation method is proved. The theoretical calculation can be used to predict the distribution of zinc dross and operation risk zone of zinc dross removal. The research results provide theoretical basis and technical support for the optimization of hot dip process and dross removal design of dross removal robot.

关 键 词：热镀锌 流动 传热 组分运输 表面缺陷 除渣 

分 类 号：TB24[一般工业技术—工程设计测绘]