Hanging or Placing the Part for Coating
Bend wire hooks to hold the part during powder application and curing. Our .041 Stainless Steel Safety Wire (#43045) works well for this application. Don't use a coated wire as debris from the wire coating may fall on the part during the curing process. High Temperature plugs (#10078) can often be used to support the parts above the trays, and plug bolt holes.
Preheating the Oven
Before powder coating the part - preheat the oven to the cure temperature indicated on the powder container (usually 400°F, 204°C). Check temperature with an oven thermometer or the Non-Contact Infrared Thermometer (#11476).
Use of Oven Tray
Make sure the oven is clean. Use aluminum foil to keep racks and oven interior clean. Practice moving part from area where powder will be applied to inside the oven to avoid damaging the uncured powder you will soon apply.
Coating Porous Materials
In some cases, contaminants in porous materials will cause pits in the powder. Porous cast iron, die cast, cast aluminum and magnesium parts trap contaminants, that, when heated will out gas and cause porosity problems when the powder is cured. See preheating, below.
Preheating the Part
To prevent porosity from occurring, preheat the part. The time that a part needs to be preheated varies with size. Preheat to between 200°F and 400°F. Use PRE Painting Prep to remove the newly exposed contaminants. Wipe the part repeatedly until no further dirt comes off on a clean white rag. Let the part cool to room temperature before applying the powder.
Containing Powder Overspray
Put down a clean plastic tarp in the area you will be applying powder to ease cleanup.