tryskání

Tryskání, also known as abrasive blasting or sandblasting, is a surface treatment process used to clean, prepare, or shape surfaces. It involves propelling a high-velocity stream of abrasive material against a surface. The abrasive material can vary widely depending on the application and the substrate being treated, including sand, glass beads, walnut shells, metal shot, or even dry ice. The propelling force is typically generated by compressed air, a centrifugal wheel, or high-pressure water.

The primary purposes of tryskání include removing contaminants such as rust, paint, scale, and old coatings. It is also used to prepare surfaces for subsequent treatments like painting, plating, or welding by creating a specific surface profile or roughness. In some cases, tryskání can be used for decorative purposes, such as etching glass or creating textured finishes on metal. The process can also be employed for deburring small parts, removing excess material, or stress relieving metal surfaces. Different nozzle types, pressures, and abrasive media are utilized to achieve specific results and avoid damage to the underlying material. Safety precautions are crucial during tryskání due to the high velocity of the abrasive particles and the potential for dust generation.