This video shows the automatic galvanized steel coil making process. More details: https://wzppgi.com/galvanized-steel-coil/
We mainly use hot-dipped galvanized process, which contains the following steps:
- Clean the grease, dirt, and paint on the surface of the steel coil.
- The coils need to be uncoiled and welded for continuous processing.
- Rinse off the cleaning solution.
- Put into an acidic solution to remove mill scale.
- Wash off the pickling solution.
- Dip the steel into the molten zinc bath and hold for a while to be galvanized.
- Cool down and roll up the steel into coils for sale.
As the name implies, hot-dip galvanizing is immersing the cleaned iron sheet into the molten zinc bath at about 500 degrees to form a zinc layer. It is the most commonly used method. It has some advantageous features:
- The entire steel surface is uniformly covered with a zinc layer, even the corners, hollows, etc. so that the steel sheet is fully protected.
- The cost of hot-dip galvanizing is cheap.
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