Products > Industrial applications > Fields > Metals

We produce products in this field, and, more specifically, in the following areas:

• Metal phosphating

Cars, refrigerators, washing machines, and other painted or enamelled equipment all have a phosphated coating between the metallic surface and the paint. Purified phosphoric acid and phosphates are used in the process of phosphating metal surfaces. This operation reduces the risk of metals corroding, insulates them electrically, and encourages paint to adhere to the treated surface.

Due to our manufacturing processes, our products have a high level of chemical purity, which is essential in this type of treatment.

• Cleaning metals
  
  These various products are also used to clean metal surfaces:
  before carrying out any phosphating treatment, the surfaces to be treated must be absolutely clean. This stage is vital because it ensures that there are no imperfections in the films covering the metal surfaces since any such imperfections would make them susceptible to localised corrosion.

  Cleaning agents containing purified phosphoric acid and/or phosphates are used to remove grease, oil, rust, limescale, glue, etc. from surfaces. A specific product is selected to remove a specific type of impurity. For example, acidic or neutral preparations are more effective in removing limescale, while alkaline detergents perform better on grease and oily residues.

• Production of electrical sheets
  
  The electrical sheet industry also uses a particular grade of phosphate — MALP (monoaluminium phosphate) and/or purified phosphoric acid. These phosphates are used in the manufacture of grain-oriented electrical sheets, which themselves are used in the production of high quality low-loss transformers.

• Treatment and polishing (electropolishing) of aluminium
  
  Purified phosphoric acid and fluorine derivatives are used in the aluminium industry.
  Fluorine derivatives are used in aluminium foundries as cast covers for baths.
  Purified phosphoric acid, in combination with sulphuric acid, is also used in aluminium polishing (electropolishing).

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If you have any questions, comments or would like additional information, please don't hesitate to contact us. Our sales team and our food applications laboratory are ready to help you.

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