| Autor: |
Reiss, Georg, Eßl, Werner, Trasca, Raluca Andreea, Mugrauer, Claudia, Stefan-Kharicha, Mihaela, Kharicha, Abdellah, Gerold, Eva, Goodwin, Frank |
| Předmět: |
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| Zdroj: |
Metallurgical & Materials Transactions. Part B; Feb2024, Vol. 55 Issue 1, p53-63, 11p |
| Abstrakt: |
The minimization of unwanted dross build-up formation on the sink rolls in continuous hot-dip galvanizing lines is a key goal of the industry. In this study, the CFD multi-physics modeling of the surface reaction kinetics for dross build-up growth and the coupling to the mass transfer is the basis for the evaluation of relevant process parameters. The results of a virtual Design of Experiments were processed by neural network approaches, as well as linear regression modeling to build a surrogate process model. It was found that the bath Al concentration has the highest effect (> 80 pct) on the dross build-up rate on the sink rolls. Operating the zinc bath at higher Al concentrations decreases the dross build-up reaction rate. Furthermore, it was found by the CFD multi-physics model that the local dross build-up rate increases toward the edges of the roll grooves which might lead to the occurrence of strip surface defects. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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