Phosphating Plants
Phosphating Plants

Phosphating is the process of converting a steel surface to iron phosphate. This is mostly used as a pretreatment method in conjunction with another method of corrosion protection.

The Phosphate coating is formed with a solution of iron, zinc or manganese phosphate salts in phosphoric acid, and is applied by either spraying the solution onto the substrate, or immersing the substrate into the solution.

The main uses of phosphating are
  • Corrosion protection in conjunction with organic coatings, such as paints and polymer films
  • Facilitation of cold-forming processes, such as wire drawing and tube drawing, or deep drawing
  • Corrosion protection in conjunction with oils and waxes
  • Corrosion protection with no subsequent treatment
  • Improving anti-friction properties, such as break-in, wear resistance, anti-galling and coefficient of friction
  • Providing strong adhesion bonding for subsequent painting or other organic coating

Corrotech has expertise in design and manufacturing of the process treatment tanks (generally referred as 7 tank process) including;

  • Degreasing Tanks
  • Rinse Tanks
  • Derusting Tanks
  • Phosphating Tanks
  • Neutralizing Tanks
  • Lubricating Tanks
Phosphating Plants
Electroplating Tanks
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