Blastblowing

Blastblowing is a technique used in various industrial processes, primarily for cleaning and surface preparation. It involves propelling abrasive particles at high velocity against a surface. The impact of these particles removes contaminants, old coatings, rust, scale, and other unwanted material, leaving a clean and often roughened surface ready for further treatment, such as painting or coating.

The abrasive materials used can vary widely, including sand, glass beads, metal shot, or specialized ceramic or organic media. The choice of abrasive depends on the material being cleaned, the desired surface finish, and environmental considerations. The propulsion method also differs, with common techniques being air blasting, where compressed air is used to accelerate the abrasive, and wheel blasting, which employs a high-speed rotating wheel to throw the abrasive.

Blastblowing is employed across numerous sectors. In manufacturing, it is used for cleaning castings and forgings, preparing metal structures for welding or painting, and creating decorative finishes. The automotive and aerospace industries utilize blastblowing for removing corrosion and preparing components for assembly. It also finds applications in the construction industry for cleaning bridges, buildings, and other infrastructure. Safety precautions are crucial during blastblowing operations due to the high-speed projectiles and potential for dust generation, often requiring specialized protective gear and ventilation systems.