Nickel Tablets

The highest zinc coating is reached when the silicon in the steel is 0,04 to 0,12%, this range is called the ‘Sandelin Curve’.

From this graph, it can easily be seen that in the Si killed steel, the example is 0,26% silicon, the coating thickness increases directly proportional with time, whereas in the unkilled steel, this increase is very slow. And even after 2 minutes dipping, the coating thickness is double in Si killed steel.

Sandelin Effect

Why Nickel?

• Reactive Steels;
  • Prevents high coating thicknesses.
  • Prevents growth of Fe-Zn alloy layer.
  • Prevents dark grey coatings.
  • Prevents peeling of coating.
  • Increase the coating homogenity.
• Zinc saving from 5% to 15% in weight.
• Increase coating ductility.
• Smoother and brighter surface finish.
• Increase the fluidity of the Zn bath.
• Aesthetical coating appearance.

 

Coating with Nickel

Why Nickel Tablet?

• Less Nickel using up to 30% compared to Zinc-Nickel alloy ingot and powder Nickel applications.
  • Zinc Nikel Alloy Ingot, 1.7 kg Ni addition per ton Zinc.
  • Nickel Powder 1.8 kg Ni addition per ton Zinc.
  • Nickel Tablet, 0.75 – 1 kg Ni addition per ton Zinc.
• Removes workmanship from the nickel joint.
• The implementation is very simple and fast.
• No special expertise or tools required.
• Nickel floats on the surface of the zinc bath more than other methods, therefore does not settle down tot zinc ash and dross.
• Nickel automatically dissolves in zinc bath.
• No dependency on purchasing of HG / SHG Zinc.

 Why ANI METAL Nickel Tablet?

• Others: Nickel + Wax
• ANI Metal: Nickel + Wax + X (X is our “know-how”).
  • ANI Metal tablets create more heat shield when burn off therefore they prevent consumption by oxidation.
  • Increase the solubility in zinc.
  • Prevents the precipitation to dross.