关键词: 热镀锌, 流动, 传热, 组分运输, 表面缺陷, 除渣

Abstract: 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-ε 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.

Key words: hot dip galvanizing, fluid flow, heat transfer, mass transfer, surface defect, dross removing