Powder coating is a popular type of coating that is used on a variety of products. It is common for powder coating to be applied to metal surfaces, but it can also be used on other materials such as plastic and glass. Powder coating is typically applied in a dry form and then cured under heat to create a durable and attractive finish.
However, like any other type of coating, powder coating can suffer from defects that can impact the quality of the finished product. Some of the most common defects include:
- Fish eyes: Fish eyes are small craters that can form in the surface of the powder coating. They are caused by contamination in the powder or on the surface that is being coated. Fish eyes can also be caused by improper curing of the powder coating.
- Bubbles: Bubbles can form in the powder coating during or after application. They are caused by trapped air or moisture that is not able to escape from the powder coating. Bubbles can also be caused by using an incorrect cure temperature.
- cracks: Cracks can form in the powder coating when it is not applied evenly or when it is cured at too high of a temperature. Cracks can also be caused by contamination on the surface that is being coated.
- Orange peel: Orange peel is a common defect that occurs when the powder coating does not have a smooth, even finish. It is caused by improper application or curing of the powder coating. Orange peel can also be caused by contamination on the surface that is being coated.
- Poor adhesion: Poor adhesion can occur when the powder coating does not adhere properly to the surface that it is being applied to. Poor adhesion can be caused by improper cleaning of the surface before application, by using an incompatible primer, or by not curing the powder coating properly.
Powder coating defects can impact the appearance and performance of the finished product. It is important to identify and correct any defects before they cause problems.
2021-06-19
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