Product Categories / Metal Treatment / Steel Treatment / Iron Phosphating

Duraphos 511

Product description

  • Duraphos 511 is a synergistic liquid blend of inorganic phosphate, and surfactant suitable to use at moderate temperature and concentration for dip processes iron phosphate.

Feature:

  • Duraphos 511 develops fine, smooth, and uniform bluish color amorphous on steel surface for durable bonding with final finish.
  • .Duraphos 511 operates at wide range of temperatures from 35-50 °C, concentration and gives long life to final finish on metal surfaces.
  • Duraphos 511 works in immersion process with surfactant additive Duradd 10.

Application:

  • Duraphos 511 can treat substrates like Iron steel, zinc and aluminum in immersion process.
  • Duraphos 511 is used with Duradd 10 as surfactant additive.

Physical & Chemical Properties:

Appearance : Liquid.
Color : Clear Colorless to slight yellowish.
PH (1%) at 25°C : 2.8 ± 0.3
Sp.gr at 25°C : 1.28 ± 0.05
Total Acid Point (1%) : 4.8±0.3
Miscibility in water : Miscible

Equipment:

All required process tanks could be fabricated from isolated mild steel. Fittings must be of PP, PVC, or Stainless Steel, use of any titanium or titanium alloys parts to be avoided.

Operating Parameters:

Concentration (v/v %) : 3.0 to 5.0
Pointage (TAP) : 14  to 24
Temperature (°C) : 25 to 50
Time (min) : 1 to 5
PH : 3.2± 0.3

Process Sequences:

  • Degreasing & Phosphating with Duraphos 511
  • Rinse with fresh water
  • Passivation
  • Drying

Initial Preparation :

  • Add 30 to 50 liter of Duraphos 511 /1000 liters of operating volume.
  • Add 4 – 8 liter of Duradd 10 product.
  • Duraphos 511 is used with Duradd 10 in same bath.

Precautions

Following precautions will help to maintain a clean operating bath.

  • Skim the oil from the surface of Duraphos 511 tank at least twice in a shift.
  • Clean the tank at least once in two months to remove all the deposited silt and dust in the bottom.
  • PH of the rinsing tanks should be kept between 6.5 to 8.5 for better cleaning and to keep work piece free from yellow patches.
  • In spray system nozzles should be cleaned time to time.
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