Product Categories / Metal Treatment / Steel Treatment / Iron Phosphating

Duraphos 501

Product description

  • Duraphos 501 is a powder blend of inorganic
    phosphate compounds and special surfactant
    suitable to use at moderate temperature and
    concentration for spray processes.

Feature:

  • Duraphos 501 cleans, degreases & iron phosphate the substrates.
  • Duraphos 501 is suitable for spray processes.
  • Duraphos 501 develops fine, smooth, and uniform bluish color coating for durable bonding with final finish.
  • Duraphos 501 operates at moderate temperature, concentration and gives long life to final finish on metal surfaces.
  • Duraphos 501 can treat substrates like Iron, steel, zinc and aluminum.

Physical & Chemical Properties:

Appearance: Powder
Color: White
pH (1%) at 25 oC : 3.4 ± 0.2
Total Acid Points (1%) : 3.1 ± 0.3
Solubility in water : Soluble

Equipment:

All required process tanks could be fabricated from
stainless steel. In Spray system Pump’s impeller &
spray nozzles must be of PP, PVC, or Stainless
Steel, use of any titanium or titanium alloys parts to
be avoided.

Operating Parameters:

Concentration (w/v%) : 1 to 3.0
Pointage (TAP) : 3 to 9
Temperature (oC) : 40 to 50
Time (min) : 1 to 3
Nozzle pressure (Bar) : 1 to 1.5
pH : 3.0 to 5.0

Process Sequences:

  • Degreasing & Phosphating with Duraphos 501
  • Rinse with fresh water
  • Passivation
  • Drying

Initial Preparation :

  • Add 10 to 30 Kg of Duraphos 501 /1000 liter of operating volume.
  • Dissolve powder in pale water before adding to tank, add powder to warm water.
  • Add powder after heating water bath.
  • Add 0.5 – 1.0 liter of Duradd 11 product in case of heavy oily steel to enhance cleaning.
  •  

Precautions

Following precautions will help to maintain a clean operating bath.
  • Skim the oil from the surface of Duraphos 501 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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