Iron phosphating

Iron phosphating is a process for the surface treatment of metal parts that aims to protect the surface by forming a thin layer of phosphate and preparing it for subsequent coating processes. This process is mainly used on iron and steel materials to improve their corrosion resistance and increase the adhesion of paints, varnishes or other coatings.

During the phosphating process, the metal to be treated is immersed in an acidic phosphate solution or sprayed with a phosphate solution. The phosphating solution contains phosphoric acid and phosphates and may contain various additives depending on the specific requirements of the material to be treated. Chemical reactions between the phosphate solution and the metal surface form a phosphate layer that is firmly bonded to the metal.

The phosphate layer formed offers several advantages. Firstly, it improves the corrosion resistance of the metal by forming a barrier against moisture and other environmental influences. Secondly, it increases the adhesion and durability of subsequent coatings as it creates a uniform and porous surface that allows better anchoring of the coating.

Iron phosphating is used in various industries, including automotive, engineering, electronics and household appliance manufacturing. It is a proven and cost-effective method of improving the surface quality of metal parts and extending their life by protecting them from corrosion and wear.