Hiekkapuhallus

Hiekkapuhallus, also known as sandblasting, is a surface treatment process that propels abrasive material at high velocity against a surface to clean or prepare it. This abrasive material is typically sand, but other media like glass beads, walnut shells, or metallic grit can also be used depending on the application. The process is carried out using a specialized machine called a sandblaster, which forces the abrasive media through a nozzle under high pressure.

The primary purpose of hiekkapuhallus is to remove contaminants from a surface. This can include rust, paint, scale, old coatings, dirt, and other unwanted materials. It is also used to roughen surfaces, creating a better bond for subsequent coatings, paints, or adhesives. The abrasive action can also smooth rough surfaces or create decorative textures.

Hiekkapuhallus has a wide range of applications across various industries. It is commonly used in metal fabrication and construction for cleaning structural steel, bridges, and pipelines. The automotive industry employs it for cleaning engine parts and preparing car bodies for painting. In conservation, it can be used to restore historical artifacts and buildings. Woodworking also utilizes hiekkapuhallus for stripping paint or creating distressed finishes.

Safety precautions are crucial when performing hiekkapuhallus due to the abrasive nature of the process and the potential for airborne dust and debris. Operators must wear protective gear, including respirators, eye protection, and sturdy clothing. Proper ventilation and containment measures are also essential to prevent health hazards and environmental contamination. While "hiekkapuhallus" specifically refers to using sand, the general term for this process in English is abrasive blasting.