You may have heard the term sandblasting from construction or machinery industries. Sandblasting is also known as grit blasting. It is the application of sand or abrasion on high pressure to specific surfaces.
1. What is sandblasting for?
Blasting has different purposes. One is to clean surfaces of large machineries, equipment, automobiles using sandblasting equipment. Since these properties can rust or accumulate corrosive substances over time, they need to be cleaned by means of sandblasting in preparation for repainting. Another purpose of sandblasting is to decorate walls. If you happen to see walls that are gritty, or etched with almost a pattern, it has been blasted with sand. You can also blast wood for restoration. Like metal, wood can look displeasing to the eye due to age, and the best way to clean it, instead of manually rubbing it with sandpaper, is to blast it. It removes worn-out paint or varnish, restores it to its natural color, and makes way for a better coating.
2. What are the materials that can be sandblasted?
As mentioned earlier, metal, in general, is the most popular material that can be blasted using sandblasting machines. Masonry (or bricks), concrete, and wood are the other materials that are safe for sandblasting.
3. What are the examples of grit blasting particles?
Depending on the surface is the type of abrasion or particles to be used for blasting. These are otherwise known as blast cleaning abrasive. You can use aluminium oxide, child iron grit, coal slag, corn cobs, garnet, copper slag, glass beads, plastic, crushed glass, nickel slag and walnut shells.
4. What are the components used in grit blasting?
There are five basic components of sandblasting. First is the blasting tank, where the abrasive or sand is stored; then the blasting nozzle, which is the tip of the sandblasting equipment; the portable air compressor that allows sand to be sprayed at high pressure onto the surface; the abrasive itself; and then the protective gear, which is composed of the clothing and the head piece.
5. How exactly does sandblasting work?
Provided that the surface has been required by an architect or engineer to be blasted, the operator prepares the sandblasting machines. Depending on the surface and the purpose is the type of abrasive required. The abrasive is placed in the pressurized blasting tank. Using the air compressor, the sand is sprayed into the hose, then the nozzle, and then finally onto the surface. The pressure supplied can range from 40-100 pounds per square inch, depending on the material. The sprayed abrasive or sand allows the surface to be clear from any corrosive material, paint, dirt, and also gives it an artistic, gritty pattern (for concrete walls).
6. How long does the entire process of sandblasting take?
The time spent on blasting depends on the size of the surface. Preparing the entire area for blasting can consume much time already, since the cleaning procedure demands safety precautions. There are also a series of tests that should be made before the actual operation to determine the right distance and angle of the nozzle.
Every Basic Thing You Need to Know About Sandblasting