Friday, April 15, 2016

The Problem-Solution Series: Part 8

Adhesion Confusion

You notice little or no adhesion on the cured powder coating part.


The phosphate coating weight could be too low.

Increase the phosphate and/or accelerator concentration, process time, and temperature.

Second Origin:
In contrast, the phosphate coating weight could be too high.

Solution:Decrease the phosphate and/or accelerator concentration and process time.

Third Origin:
Surfactants and soils stuck around, limiting phosphate disposition.

Adjust the cleaning and rinse stages, orient the parts for maximum exposure, clean and adjust the spray nozzles, and, as always, maintain high rinse tank water purity.

Fourth Origin:
There are unidentified soils that remain in the metal and/or the process.

Check to make sure that all metal and process soils have been identified.

For additional information on powder coatings, visit our website at Feel free to Contact us today to have someone from our experienced team answer your powder coating questions or to see how we can help you with your powder coating needs.

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