Trouble Shooting Guide

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Problem:
Bath pickles Metal and creates Dusty Coating

Cause(s):

•   Accelerator level too high

Remedy:

•   reduce accelerator level by processing the aluminium or auto draining and      adjusting the bath

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Problem:
Low Coating Weight

Cause(s):

•   Aluminium concentration too high in the bath
•   Accelerator too low
•   Concentration too low
•   Total acid too high in relation to chronium concentration

Remedy:

•   Auto drain and adjust
•   Add accelerator
•   Add make-up chemical
•   Auto drain bath and adjust

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Problem:
No Coating

Cause(s):

•   Total absence of accelerator in the bath

Remedy:

•   add accelerator

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Problem:
Sludge Plugging in Nozzles

Cause(s):

•   Aluminium concentration in bath too high
•   Alkaline salts dragged into bath

Remedy:

•   Auto drain bath and adjust
•   Increase overflow rate of rinse following cleaner

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• epoxy polyester powder • epoxy powder • polyester powder
• speciality powder • why powder coatings? • household appliances
• automotive components • furniture • architectural • electrical
• metal pre-treatment • chromatising • iron phosphating • zinc phosphating
• chromate process • troubleshooting tips • material safety sheets

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