Numerical Simulation of Zinc Flow in Different Layouts of Galvanization Pot

Abstract

The production of galvanized steel with zinc (GI) presents great challenges due to the high demand for surface quality required for its applications. The automotive segment is one of the largest consumers of this type of product. In hot dip galvanizing lines, the main defect that affects the surface quality of the coatings is the dragging of dross particles. Some studies have already been carried out to understand the formation of these particles inside the zinc bath, however little is known about the trajectory of these particles in relation to the pot layout. In this study, two types of layout were simulated to assess how this interferes with the flow of zinc. In the results it was verified that, the position of the heating inductor significantly modifies the trajectory of the dross particles.

Trajectory of Top-Dross Particles During the Melting of Zinc Ingot in Galvanizing Pot

“…The results of the liquid zinc flow lines from the pot with the electrical inductors that maintain the temperature of the zinc bath and which, which when in operation change the flow behavior, were compared with the results already known in the literature to confirm the flow pattern 12 .…”

Numerical study of gas-solid two-phase flow in the snout of continuous hot-dip galvanizing process

“…Similar research [5] has shown that the width of the strip has an obvious impact on the zinc ash deposition direction. Vieria et al [6] studied the particle trajectory in a galvanizing bath and found that large particles settle more quickly in the galvanizing bath, while small particles move longer before settling. Dong et al [7] found that the scheme of using baffles and exhaust ducts was the most effective in suppressing zinc ash diffusion.…”