Powder coating, also known as dry painting, is a popular finishing method for machines and parts. If you’re thinking about having this done, you’ll likely have a lot of questions about the process and what to expect. Here are a few of the most commonly asked questions to learn the basics of this type of coating.

FAQ About Powder Coating

What is It?

A coating of small dry plastic particles is applied to a metal surface. Because the powder is electrostatic and the metal is grounded, the powder will adhere to the surface. Once coated, the item is placed in an oven and heated to temperatures around 400 degrees. This melts the powder, bonding it to itself and the metal surface. The result is a plastic coating that’s perfectly conformed and attached to the surface.

Is it durable?

Powder coating’s extreme durability is one of the reasons it is so popular. You can choose a type of powder based on the conditions your metal will be in. For example, outdoor powder is designed to withstand the elements and protect the metal from rust; indoor powders will not scratch or dent. If you choose the right powder, you can expect your surface to maintain its beautiful new look for years to come.

How do you prepare a surface for coating?

The surface needs to be properly prepared, or the coating will not properly adhere. Any paint or other covering will need to be stripped off. The surface is sandblasted to remove imperfections, dirt, or remnants of the old finish. The metal will need to be hooked up to a ground wire while the powder is applied.

How much will it cost?

The cost of your coating will depend on a few factors. This includes how much processing and preparation is required and the surface area of your part. The cost of the powder paint itself will impact the overall cost; for example, stock colors are more affordable than special-ordered ones, while availability may impact the cost of certain colors and ingredients.

The team at Gateway Powder Coating in St. Louis, MO, have the equipment and expertise to handle powder coating projects of all sizes and types. Their state-of-the-art curing oven will provide reliable results, properly adhering the powder to the object for a more durable result. Their sandblasting techniques will remove any existing corrosion, restoring your parts. See some of their work online, and call (636) 486-2428 to speak with a friendly representative today.