TY - JOUR

T1 - Development of a Dross Build-Up Growth Process Model for Hot-Dip Galvanizing Considering Surface Reaction Kinetics

AU - Reiss, Georg

AU - Eßl, Werner

AU - Trasca, Raluca Andreea

AU - Mugrauer, Claudia

AU - Stefan-Kharicha, Mihaela

AU - Kharicha, Abdellah

AU - Gerold, Eva

AU - Goodwin, Frank

N1 - Publisher Copyright: © 2023, The Minerals, Metals & Materials Society and ASM International.

PY - 2024/2

Y1 - 2024/2

N2 - The minimization of unwanted dross build-up formation on the sink rolls in continuous hot-dipgalvanizing lines is a key goal of the industry. In this study, the CFD multi-physics modeling ofthe surface reaction kinetics for dross build-up growth and the coupling to the mass transfer isthe basis for the evaluation of relevant process parameters. The results of a virtual Design ofExperiments were processed by neural network approaches, as well as linear regressionmodeling to build a surrogate process model. It was found that the bath Al concentration hasthe highest effect (> 80 pct) on the dross build-up rate on the sink rolls. Operating the zinc bathat higher Al concentrations decreases the dross build-up reaction rate. Furthermore, it wasfound by the CFD multi-physics model that the local dross build-up rate increases toward theedges of the roll grooves which might lead to the occurrence of strip surface defects.

AB - The minimization of unwanted dross build-up formation on the sink rolls in continuous hot-dipgalvanizing lines is a key goal of the industry. In this study, the CFD multi-physics modeling ofthe surface reaction kinetics for dross build-up growth and the coupling to the mass transfer isthe basis for the evaluation of relevant process parameters. The results of a virtual Design ofExperiments were processed by neural network approaches, as well as linear regressionmodeling to build a surrogate process model. It was found that the bath Al concentration hasthe highest effect (> 80 pct) on the dross build-up rate on the sink rolls. Operating the zinc bathat higher Al concentrations decreases the dross build-up reaction rate. Furthermore, it wasfound by the CFD multi-physics model that the local dross build-up rate increases toward theedges of the roll grooves which might lead to the occurrence of strip surface defects.

KW - Dross Build-Up

KW - Grwoth Process Model

KW - Hot-Dip Galvanizing

UR - http://www.scopus.com/inward/record.url?scp=85174743478&partnerID=8YFLogxK

U2 - 10.1007/s11663-023-02921-2

DO - 10.1007/s11663-023-02921-2

M3 - Article

VL - 55.2024

SP - 53

EP - 63

JO - Metallurgical and materials transactions. B, Process metallurgy and materials processing science

JF - Metallurgical and materials transactions. B, Process metallurgy and materials processing science

SN - 1073-5615

IS - February

ER -