What is The Powder Coating Quality Control Process?
The first step of the powder coating quality control process is pre-treatment. Here, quality control ensures that the surface of whatever is about to be powder coated is clean and does not have any adhesions. Shot blasting may be used to remove any adhesions and smooth out the surface.
Secondly, the powder coat is applied. This coat can either be sprayed on, or the product can be dipped in a bath of powder coat, also known as fluidized bed coating. Quality control checks the thickness and coverage of the powder coat to ensure the whole product has been coated.
The third phase of powder coating is the curing phase, during which the coated product is placed in an oven to melt the powder. Quality control measures the curing time, temperature, and gloss level of the product after the powder has melted to create a smooth, sheen finish.
The final stage is the inspection stage. This is where the powder-coated product is inspected to ensure it meets the desired criteria. In some cases, this might be an aesthetically pleasing finish in a particular colour. In other cases, quality control might be based entirely upon performance, ensuring that the powder coat protects against environmental damage.
This stage includes checking for any defects, like pinholes, bubbles, or colour variations.