The withdrawal rate of material from the galvanizing bath has the greatest effect on the outermost layer of pure zinc.
A rapid withdrawal will produce the thickest coating because the largest amount of zinc will be carried out on the material and will subsequently solidify and become the pure zinc layer.
Slower withdrawal allows the zinc to effectively drain back into the kettle producing smoother, thinner, and more uniform coatings.
 The chemical composition of the steelThe surface condition of the steelBath immersion timeBath withdrawal rateSteel cooling rate |
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