Journal
ISIJ INTERNATIONAL
Volume 50, Issue 11, Pages 1671-1675Publisher
IRON STEEL INST JAPAN KEIDANREN KAIKAN
DOI: 10.2355/isijinternational.50.1671
Keywords
galvanisation; solidification; simulation; heat transfer analysis; steel tubes
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A simulation study was carried out for the first time on zinc solidification and coating profiles in tube galvanising for an industrial line. The entire process was simulated with the help of flow and heat transfer models and surface wave model in this computational heat transfer study. It was observed that the coating on tube inner surface gets solidified for more than one third of its length before the steam blowing to remove the extra zinc. This part of the tube thus becomes insensitive to steam blow for thickness control. The wavy coating profiles developed due to jet blowing of steam were predicted that matched well with the measured profiles from industrially made galvanised tubes.
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