In the simplest sense, abrasive blasting is the process of blowing abrasive particles at high speed at a surface. Typically, it is done to scour away damage on a surface or to sand it smooth. It works under the same principle as sandpaper. The particles of sand or whatever abrasive material you use will create microscopic scratches along the surface of a material to smooth it out. The choice of material and the size of each particle will be determined by the material that you are scouring and the purpose of the process.
Glass beads are the most commonly used tool when blasting something that has a lower hardness level than metal. Bead blasting in Perth is used for items such as swimming pool tiles, other kinds of glass, and dedicated machined metal parts. Using glass beads is helpful because they are lighter weight and more fragile than some other abrasives. This means that when a glass bead hits the surface of a piece of mildewed tile, it will scrape away the mildew but will not be hard enough to scrape the surface of the tile. For these reasons, beads are used for materials that are delicate and also for cleaning items. It’s not quite as useful for sanding items smooth because the glass will likely break.
Sandblasting is the most common kind of abrasive blasting; in this application, sand is blasted at a very high speed through a pneumatic nozzle. The sand is typically a specially made blend of materials that is designed specifically for use in blasting. In most cases, the sand is not as hard as metal; therefore, it can be used to clean metal and to scrape away paint without actually damaging the metal. It will, in some cases, help smooth the surface of metal but it will not usually make deep scratches. If you need something that will take away layers of metal, you need chilled iron grit or steel grit.
Chilled iron is a type of cast iron that has been brought to a low temperature during its casting. This means that it will be a very hard material. It will be somewhat fragile as well; therefore, it is not often used for tools or other materials but it can be used for abrasive blasting. The iron will be harder than almost any other material except for another metal. It can be used for the large-scale removal of the surface of a material. It’s especially useful for removing the surface of wooden structures. Finally, if you need something even harder than that, you can use steel grit for stock removal. The steel grit will be propelled at a high rate of speed to remove large amounts of material from a surface.