But most metal-manufacturing industries have long adopted this tried-and-tested approach because of the many benefits that powder coating can offer over other painting methods.
Read on to discover why powder coating is superior to painting metals.Although there are many different finishing options within the metal fabrication industry, powder coating is relatively new.
Before this technology, nearly all metal was painted.Yet it was discovered that the paint did not bond very well to metal produced items, so you could only add so much paint on the surface until it reached its full thickness.In the 1940s and 1950s, powder coating was developed as an alternative to painting metal.
The overspray can be recycled, which reduces the amount of paint wasted (as well as hazardous waste) and cuts down on expenses.How Does Powder Coating Work?The process consists of two steps: applying a coat of powder material to an item and then curing the powder.
Applying the powder can be done using an electrostatic gun that sprays the powder, or a less common method involves dipping the items in a fluidized bed.Item curing involves heating the products in a gas-fired convection oven until the powder is dissolved and the film is smooth.
Most powders need to be cured at 400 degrees for 10 to 15 minutes.But modern technologies developed would allow powders to be cured at 300 to 325 degrees, which will offer some significant energy savings.
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