hiekkapuhdistus

Hiekkapuhdistus, also known as sandblasting, is a surface treatment method that propels abrasive material, typically sand, at high velocity against a surface. This process is used to clean, roughen, or prepare surfaces for further treatment. The abrasive material is propelled by a compressed air stream. The size and type of abrasive material, as well as the pressure and angle of application, can be adjusted to suit different materials and desired outcomes.

Common applications of hiekkapuhdistus include rust removal from metal structures, paint stripping from various surfaces, and cleaning stone or brickwork. It is also used to create a matte finish on glass and metal, or to prepare surfaces for painting, coating, or welding. The abrasive action can remove contaminants like dirt, old paint, rust, and scale. In some industrial settings, it is employed to deburr castings or to create specific textures on surfaces.

While effective, hiekkapuhdistus requires careful handling and appropriate safety measures. The fine particles generated can be a respiratory hazard, necessitating the use of protective gear such as respirators and eye protection. Dust control measures are also important to minimize environmental impact. Alternative abrasive materials like glass beads, aluminum oxide, or walnut shells are sometimes used depending on the material being treated and the desired finish, as pure sand can be too aggressive for certain delicate surfaces.