Rev. Met. Paris
Volume 102, Number 6, June 2005Coulée continue
Contrôle de la qualité
|Page(s)||463 - 469|
|Published online||26 July 2005|
Effect of nozzle tilting on splashing in jet wiping
A physical limit to the galvanizing speed exists over which the liquid film explodes completely and prevents any further wiping. This limit is presently estimated around 180-200 m/min. A dimensionless approach including the Weber and Reynolds numbers is proposed to be able to predict the occurrence of the phenomenon. Practically it comes out that nozzles tilted by 30° down to the pot can pushback the limit by 30 %. A maximal line speed around 220 m/min could thus be reached.
© La Revue de Métallurgie, 2005
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