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Phosphate coating
procedure -- NuKoat Series of Products |
 |
| For best results with Iron Phosphating these parameters should
be followed for 35-50 mg/ft2 coating weights. |
 | Spray (superior coating and cleaning over
immersion) |
| Minimum Pressure: 300 PSI at >3 GPM |
| Temperature: 120 -140 F |
| Time: 60-180 Seconds (coating weights will increase
with longer contact times). |
For a downloadable pdf file click here |
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Start from the bottom
and work vertically up surface for large pieces. Ensure complete
impingement, under pressure, of NuKoat 33MF for a minimum of 60 seconds on
entire surface. DO NOT ALLOW the surface to dry down during
processing. |
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Guidelines for achieving desired coating weights:
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Spray coating weights 25
- 50 mg/ ft2
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Temperature: 120 - 140
F
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Concentration: 2-4 % By
volume
-
Time: 1 - 2
minutes
| Laboratory Q-Panel
Testing on mild 1010 steel: 120 F @ 2 % b.v., 90 sec will give
coating weights of 30 - 45 mg/ft2 |
NOTES:
| On cast iron coating
weights will be slightly lower than mild steel. Use 130 - 140 F to get 30
- 45 mg/ft2. |
| In cold weather or on
cold metal surface, especially large pieces metal should be heated or
processing could require an extra 30-60 seconds. |
Direct contact time
is critical along with prior removal of surface grease and oils. NuKut
33 MF is designed to provide adequate cleaning of mildly soiled work pieces.
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Immersion with light
agitation:
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mild steel (1010) - 120
F, @ 2 % b.v., 2 - 3 minutes, 35 - 50mg/sq. ft.
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NOTES:
(1) Want to determine your own coating
weights for all of your conversion coating processes or compare conversion
coatings from one supplier to another.
Click here for FEDERAL SPECIFICATION:
TT-C-490E: CHEMICAL CONVERSION COATINGS AND PRETREATMENTS FOR FERROUS SURFACES
(BASE FOR ORGANIC COATINGS)
GOVERNMENT/SCIENCE APPLICATIONS FOR CONVERSION
COATINGS:
| Government Applications
 | Navy (Std Missile, Phalanx, RAM, Tomahawk)
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| Air Force (ACM, AMRAAM) |
| NASA |
| DOD Prime Contractors |
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| Industrial Applications
| aerospace |
| boilers |
| air conditioners |
| fusion rollers (copiers, laser printers, etc) |
| aluminum construction materials |
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