The demand for powder coatings and liquid coatings is expected to rise 3% each year by 2021, and with this rise, it is important to know about the steps that should be taken before a coating is applied. Sandblasting is an abrasive blasting technique that helps prime the surface of materials to ensure that the coating can adhere correctly to the surface and provide a long-lasting finish. Different and more thorough than sanding by hand, sandblasting services are an essential part of the coating process.
The Sandblasting Process
Sandblasting utilizes compressed air and sand particles — and sometimes other abrasive materials — which are expelled through a hose. As the particles impact the surface of the material the fine particles strip away the top layer of rust, dirt, grime, and imperfections that would otherwise compromise the coating. This leaves behind a smooth clean surface that can then be coated with whichever coating you need. Sand is the most commonly used particulate; however, metal grit, glass beads, and other various powdered abrasives can also be used to achieve a smooth outer finish.
While sandblasting isn’t always followed by coatings, this process is essential to ensuring that both powder and liquid coatings can adhere properly to the surface of a material. Without this step, the lifespan of the coating can be severely lowered and cracking, bubbling, and peeling can be expected due to poor adhesion.
Should You Always Use Sandblasting?
Simply put, yes. As touched on above, without sandblasting any type of coating won’t properly adhere to the surface of a material. The sandblasting not only removes dirt and grime but leaves behind minuscule scratches that make it easier for coatings to sink into and bond with. This gives a uniform, smooth, appearance to the newly coated material while also ensuring that the coating will last as long as possible without peeling or cracking.
If you are considering powder or liquid coatings for your materials and components, be sure to look for sandblasting services near you, or a coating service that can sandblast your surfaces beforehand. By undertaking this step you can ensure that your coated components have a professional finish that both looks great and lasts as long as possible.