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4 proven options to help make the paint curing process even faster

 

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Curing paint is easier when you have controlled conditions, but we have 4 proven options to help make the curing process even faster.

 

#1 Heat the surrounding environment to aid the drying process.
Utilizing a spray booth is a fantastic way to control the conditions. Spray booths offer a contained environment which allows you to raise post-painting temperatures 150-200ºF (65–93ºC). Alternatively, you could employ localized heat to painted areas which will also assist the curing process.

TECH-TIP - At all times ensure that the environment safety is preserved – do not use gas or potential ignition sources!

 

#2 Move high velocity air over the surface of the coating.
Have you ever noticed that wet clothes dry quicker when it’s windy? The same principle applies to industrial coatings. As paint dries, solvents “evaporate” and coalesce to form a very thin chemical atmosphere, perhaps a few millimetres thick, hovering above the coating. This concentrated atmosphere now acts as a buffer (or insulator) between the wet paint and the general atmosphere causing a slow down of the curing. High velocity air helps whisp away this buffering chemical atmosphere, allowing the drying paint to release more solvents, and ultimately cure the paint far faster than if the air was still.

In a painting environment, you can’t have high velocity air while painting as it will create excessive overspray. A common option is to have an ‘Aquatech’ style fast drying solution which is turned on once the painting is finished, and forces fast moving air over the surface of the painted product. This system can be fitted to paint booths and also large open painting areas.

TECH-TIP - At all times ensure the ventilation equipment complies with electrical standards.

 

#3 Don’t “thin” the paint
If you find you need to thin the paint to get it to atomize, here are two recommended options:

a) For standard epoxies which you normally thin, use a plural component pump, and thinning will no longer be necessary.

b) Use an in-line paint heater to heat the paint before it has left the pump. The most common reason paint won’t properly atomize at the spray tip is because the paint is too cold.

 

#4 Get the product you are painting up to temperature before you paint
This applies if you are blasting outside and then bringing the blasted product inside for painting. If it is cold outside, the steel is cold and when the paint is applied, the low steel temperature will inhibit the curing speed. There you have it: 4 tips to increase curing speeds.

TECH-TIP - Consider using a “bath” of heated water to immerse the paint container, before spray application.

 

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