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Les langues disponibles
V 4.0
Air Powder Coating Machine
8634289
COATING POROUS MATERIALS
The defect will have small opening like tiny volcanos. Contaminants or air
pockets trapped under the powder expanded during the curing process and
blew through the curing surface. This is also known as outgassing.
Heat the coated part to 400 °F (205 °C). Move to the work area and reattach the
earth clip to an exposed surface or the device holding or suspending the part.
Follow the steps in Operation for powder coating and curing.
CAUTION! Wear protective gloves to avoid a burn injury.
ORANGE PEEL
Orange peel is when the coated surface resembles the surface texture of an
orange. A certain amount of orange peel is unavoidable, especially with
polyester based powders.
Sand the part with 400 grit sand paper to remove the texture or buff by hand
with a chrome polish. This does not work with all powder coatings. You may
want to powder coat a scrap piece of metal to see if either method works with
the powder.
POOR SPRAY PATTERN
A poor spray pattern is likely due to water contaminating the powder or too little
air pressure. Empty the compressor of water and replace the disposable
moisture filter. Clean the powder coating gun (see Cleaning). Check the powder
in the canister to confirm it is not clumping. Replace powder if this is the case.
Follow the steps in Powder Coating The Part to attain the correct powder
coating dispersal.
FINISH EASILY CHIPS
A part's finish that is easily chipped away is due to either failing to heat the part to
400 °F (205 °C) or not keeping it in the oven for a full 10 minutes after achieving the
correct temperature. Check that the oven, standing heater or heat gun is reaching
the necessary temperature with either an oven thermometer or a temperature gun.
Follow the steps to clean, degrease, powder coat and cure the part.
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