Iron phosphating

Iron Phosphating is a relatively cost-effective pretreatment process.

It is used for improving adherent strength and for Corrosion protection during the lacquering process. The created phosphate layers adhere firmly as they crystallize directly on the metal grid of the basic material.

The phosphate treatment solutions mainly consist of acidic alkaliphosphate and free phosphoric acid.

By the inducing reaction of staining, Fe2+ is set free and reacts - under formation of sparingly soluble iron phosphate - with the phosphate ions of the solution. Finally it firmly adherent depositions on the metal surface.

The common iron Phosphating agents prefer a slightly sour pH value of 4 to 6.

Forming adequate layers takes 60-120 seconds on average with spraying method and 3-5 minutes with dipping method at temperatures of 40-60°C.

Iron phosphating

Pretreatment

Overview of our services

Contact, repuests, suggestions

Social networks