Paineilmapuhallusmenetelmä

Paineilmapuhallusmenetelmä, often translated as compressed air blasting or sandblasting, is a surface preparation technique that involves propelling a high-pressure stream of abrasive material against a surface. This process is used to remove contaminants such as rust, paint, scale, and dirt, as well as to roughen the surface for better adhesion of coatings. The abrasive material can vary depending on the application and the desired surface finish. Common abrasives include sand, glass beads, walnut shells, and metallic shot.

The compressed air is delivered by an air compressor and directed through a nozzle, which accelerates the abrasive particles to high velocities. The impact of these particles effectively dislodges unwanted material from the substrate. The intensity of the cleaning can be controlled by adjusting the air pressure, the type and size of the abrasive, and the distance from the nozzle to the surface.

Paineilmapuhallusmenetelmä is widely used in various industries, including construction, manufacturing, automotive, and marine. It is employed for cleaning metal structures, preparing surfaces for painting or welding, removing old coatings, and achieving specific surface textures. Environmental considerations and worker safety are important aspects of this method, with measures such as dust containment and personal protective equipment being essential. Different methods exist, including dry blasting and wet blasting, the latter being used to suppress dust.