| Avoiding Paint Failures: The following have been identified as important elements in avoiding paint
failures:
Big Five:
Correct surface preparation.
Selection of suitable paint system.
Correct application.
Correct drying, curing and overcoating times.
Protection against water.
Others:
Designing with painting in mind (watching
out for edges, crevices, rough welds, discontinuous (stitch) welds, weld spatter, corners,
inaccessible areas, moisture traps, dirt build-up, etc.).
Attention to detail.
Good specification for the complete surface
treatment system.
Knowledge of failure mechanisms and causes.
Planning, organizing and preparing for "worst case scenarios".
Strictly working within manufacturers guidelines and recommendations -
"doing it by the book".
Where possible, staying within one product line, using a single supplier
for the different components of a surface treatment system.
Several more ... such as good communication between all parties involved
...
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References/Literature:
The "Big Five" in the list have been published by Plascon,
Zambia (at www.zambiz.co.zm/plascon/paint_failures.htm).
ISO 8501-3 standard (Part 3: Preparation grades of welds, cut edges and
other areas with surface imperfections)
Influence of surface cleaning/treatment on
durability
Links:
Reliability factors - paint coatings on
steel
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