Numerical and Experimental Investigation of Using a Proposed Cylindrical Device to Prevent Edge Over-thickness in Jet Wiping Process

Hot–dip galvanizing process is simulated numerically. Over-thickness near the strip edge called edge over-coating in continuous hot-dip galvanizing process is a universal problem. Numerical results of using a cylindrical device installed at jet exit are presented to prevent over-thickness near the strip edges. This device prevents jets from colliding with each other in the region outside the strip and reduces flow oscillations. In addition to numerical investigation, cylindrical device is tested experimentally in Mobarakeh Steel Complex. Numerical and experimental results show that the installed device is very effective in reducing over-thickness near the strip edge, but cannot completely solve the problem.