How to do Hot Dip Galvanization ?

Galvanization is the process of applying Zinc coating on Steel to prevent Corrosion. In Hot dip Galvanization, Fabrication is submerged in Molten Zinc.

Time needed: 45 minutes

How to do Hot dip Galvanization ?

  1. Degreasing

    In this stage, Oil or Grease is removed by diping steel fabrication into Acidic/Alkaline solution.

  2. Rinsing

    In this stage, Steel Fabrication is Rinsed, so that no Oil/Grease/Acidic solution is transfected to next stage.

  3. Chemical Cleaning

    In this stage, Steel Fabrication is dipped into Hydrocloric Acid, which removes Rust and Mil Scales on the Steel Fabrication. Hydrocloric Acid is kept at Ambient temperature.

  4. Rinsing

    In this stage, Steel Fabrication is Rinsed, so that no Rust/Hydrocloric Acid is transfected to next stage.

  5. Flux Treatment

    In this stage, Steel Fabrication is dipped into solution of Zinc Cloride + Ammonium Chloride. Flux Treatment, Aids/Helps reaction of steel and Zinc in next stage, by increasing wetablity of the Steel fabrication surface.

  6. Drying

    In this stage, Steel Fabrication is Air Dried, post which coat of flux is formed.

  7. Galvanize

    In this stage, Steel Fabrication is dipped into molten Zinc (+98.5% ) of temperature 450 *C. Min 20 minutes immersion may be required. Due to Reaction of Zinc and Iron, coating are formed on the surface of Steel fabrication, which are Zinc Iron Alloy

  8. Quench

    In this stage, Steel Fabrication is allowed to Air Dry Or dipped into Quench tank to avoid undesirable reaction with atmosphere.

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