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  4. Iron phosphating

Iron phosphating

TECHNICAL DATA SHEET

 

Iron phosphatation or amorphous phosphatation is a superficial chemical transformation of a substrate using an appropriate acid solution to perform two functions :

  • Create an adhesive base for organic coatings.
  • contribute to the corrosion protection of the surface treatment + paint system.

 

Name of the process :

  • Degreasing-phosphatation: because it allows to combine the two operations in a single step
  • Iron phosphation: because the layer formed on steel is based on iron phosphate (iron from the substrate)
  • Amorphous phosphatation: because the formed layer has no well-defined structure (no crystals).

 

The phosphatation process is complex because it requires a careful surface preparation and precise knowledge of the elements present on the surface which may be of a different natures :

  • FAT SURFACE FILM
    • corrosion protection oil on coil
    • lubricant for shaping parts (stamping, etc.)
    • Average protection oil rate: 2 g/m² (1.5 to 3 g/m²)
  • POLLUTION ELEMENTS IN CONTACT WITH THE SURFACE
    • rolling mills (metal dust from cylinder wear)
    • annealing (decomposition of rolling oils)
    • migration to the metal surface of certain steel components, including carbon
  • POLLUTION ELEMENTS IN CONTACT WITH THE OIL FILM
    • environment, dust, filings,
    • manufacturing process (grinding, drilling, sawing, etc.).

 

There are three modes of application of BONDERITE® amorphous phosphatations :

  • Spraying: tunnel, machine
  • Immersion: small series, hollow body
  • High-pressure: very large parts

 

AREAS OF APPLICATION FOR BONDERITE® AMORPHOUS PHOSPHATATIONS :

  • Preparation before painting
  • Degreaser/phosphatant: amorphous iron phosphatation, dip application, jet and high pressure system, multi-metal, low layer weight/high layer weight, mineral or organic accelerator, mono or bi-component,

 

Below are our standard BONDERITE® DEGREASER-PHOSPHATANT  :

  • BONDERITE M-FE HP
  • BONDERITE M-FE 687
  • BONDERITE M-FE LF-3820
  • BONDERITE M-FE 30 A
  • BONDERITE M-FE 1070

List not exhaustive, contact us for a recommendation or if you are looking for another reference.

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  • About A.M.P.E.R.E.
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    • Chemicals
    • Henkel® product line
    • Equipment & Accessories
    • Sputtering targets
    • Cathodic protection
    • Polishing powders
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