What is Sandblasting?

Vehicle refinishing calls for many processes aside from the actual application of spray paint. One such process is sandblasting. Sandblasting, which is also known as abrasive blasting, involves blasting an abrasive material onto a surface, usually metal, to clear the surface of any imperfections. This process is typically used for cleaning ship hulls and also to prime vehicles for repainting jobs. This is the best preparatory process to undertake when changing the exterior paint of a vehicle.
Sandblasting was so named because it made use of sand forcibly blasted on a surface. Because of the health concerns surrounding the use of sand as material in sandblasting, industries have shifted to use other abrasive materials as alternatives to sand. Some of the common sandblasting materials include metal grit, nut shells, copper slag and other synthetic abrasives.
The Process Involved
Sandblasting is an important priming step before paint is applied to a surface, such as in the case of Vehicle Spray Painting. Sandblasting will remove any roughness on the surface and will prevent any particles or dirt from being trapped within the paint. The sandblasting process will also prevent paint bubbles from forming. This process is very effective in removing rust and paint from the metallic surface.
The process makes use of an air compressor and abrasive material to make the surface smooth, remove dirt and contaminants and any other imperfections. The abrasive material is propelled on the surface by using pressurised fluid or air. Sandblasting is best done by spraying from top to bottom in controlled and consistent motions. Extra pressure is applied when dealing with hard to remove paint, dirt or contaminant.
Health and Safety Concerns
Because of the health hazards associated with sandblasting, extra precautions are needed in this operation. The abrasives are not in themselves hazardous, but when used for sandblasting, they can be harmful to the workers. There is the danger of explosion in this type of work environment if the facility is slack in safety precautions.
Workers must wear protective clothing, headgear and protective goggles to protect themselves from the splatter of abrasive materials and from exposure to excessive heat and noise. There must be a collector set up to gather dust particles from the sandblasting process. There should also be proper ventilation inside the sandblasting facility to prevent heat exhaustion in workers.
For best vehicle refinishing results, sandblasting is a must. This process will ensure that there are no unwanted dirt and grime left on the vehicle’s surface before it is repainted. Click here for more information on sandblasting and vehicle refinishing.