Aerospace is one of the many industries that now uses wet blasting in various manufacturing processes.
In wet vapour abrasive blasting, the abrasive is moistened in a buffer of water prior to impacting the surface. The process involves mixing water and abrasive inside a pressurised blast tank and the mixture of air, water and abrasive is propelled onto the surface being blasted. When wet abrasive impacts a surface, fine particles are sequestered in water droplets. The additional water weighs the particles down, preventing dust getting airborne.
The main advantage of vapour abrasive blasting over dry blasting is that it reduces dust, allowing operators to work in a wide range of environments with minimal setup and clean-up costs. By suppressing the ambient dust, it causes minimal disruption to the surroundings. The abrasive media is encapsulated in water, which immediately falls to the ground, and up to 95% of the airborne dust is eliminated.