by Columbia Coatings
on Friday, January 9, 2015 8:13:00 AM
Chrome powders cure differently than any other powder and we quite often receive tech calls about the curing process. Most powders that require a top coat are partially cured for about 10-15 minutes at 385°F. Then the part is taken out of the oven and cooled to around 175°F. Once the part is cooled, the top coat is applied and the part is put back in an oven for a full 20-30 minute cure cycle.
However, chrome powders require a full cure cycle plus they must be completely cooled off before the clear coat can be applied. If the chrome is not cured enough for the powder particles to truly bond together when the clear top coat is applied, then the top coat will seep into the chrome surface and dilute the metallic flakes that create the luster you see on chrome finishes. The same thing happens if you apply the clear top coat when the chrome is still hot. These simple steps will keep your project from dulling out and turning grey.
Recap on Proper Chrome Application
- APPLY CHROME
- CURE CHROME FOR 25-30 MINUTES @ 385-400°F (depending on thickness of metal).
- COOL COMPLETELY
- APPLY TOP COAT
- CURE TOP COAT FOR 20-30 MINUTES @ 385°F.
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