Optional for articles
contaminated by Oil,
Grease or paint.
(Dipping
in sodium hydroxide
solution) |
|
Degreasing |
 |
|
| Dipping in Hot Water (60°
C) to Clean the Degreasing
agent. |
|
Rinsing |
|
|
| Dipping in Hydrochloric
acid bath at ambient
temperature to scour the
steel surface and remove
any rust or scale |
|
Pickling |
|
|
| To remove excess Acid
neutralize its effect and
obtain a clean surface |
|
Rinsing |
|
|
| Solution of Zinc Ammonium Chloride to ensure efficient flow of Zinc over the surface to ensure good bonding |
|
Fluxing |
|
|
| To remove unwanted
moisture and increase the
steel temperature to
required level for compete
coating |
|
Drying Deck |
|
|
| Bath of molten Zinc in a
temperature range of
456° - 460° C. Product is
gradully withdrawn to
allow excess Zinc to drain
off. |
|
Galvanizing |
|
|
|
Quenching |
|
|
| To prevent formation of
white rust. |
|
Dichromatic |
