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Online Resources - Troubleshooting

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Chromate (hexavalent) conversion coatings

Defect

Typical cause

Analysis to confirm cause

Remedy

Colour too weak

Subscribers only

Uneven coating

Subscribers only

Dull/drab coating of blue or iridescent films. (usually associated with a coating that is too thick)

Subscribers only

Adhesion poor 

Subscribers only

Corrosion resistance poor  -  drying too hot (coating is the correct colour)

Subscribers only

Damaged film

Subscribers only

 


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