Blasting abrasive comparison

Vapour blasting and wet blasting comparison

Innovative vapour blasting techniques tend to be more efficient. Time for a comparison!

For many years wet blasting has been the preferred way to control the dust generated from abrasive blasting. Although wet blasting machines are still widely used, they have important drawbacks.

Wet abrasive blasting removes coatings, contaminants, corrosion and residues from hard surfaces, just like dry blasting. The difference is that the blast media is moistened prior to impacting the surface, reducing rust and clean-up costs. Most traditional wet abrasive blasting systems are equipped with a halo (water ring) nozzle that forms a curtain of water surrounding the abrasive blast, dampening the dust after impact.

Benefits of vapour blasting

Vapour abrasive blasting offers a solution for some of the drawbacks of traditional wet blasting. These systems combine water and abrasive in a pot under water pressure and inject this mixture into the airflow. Vapour blasting has some important benefits:

·       It enables operators to reduce dust production by up to 92%.

·       It allows fine control over the air pressure and water/abrasive mixture, reducing the amount of media and water expended.

·       Less usage of abrasive media and water results in less mess and clean up at the end of the day.

·       It is suitable for blasting a wider range of surfaces with the highest quality surface finish.

Vapour abrasive blasting vs water blasting

The following comparative table will show why vapour blasting is an effective, efficient and environmentally friendly technology, leaving you with the best quality surface preparation.

Wet Blasting

-    Leaves a surface that is drenched in water
    High environmental impact:
        ·       Consumes between 20-40 litres water per minute
        ·       Consumes 300-500 kilograms abrasive per hour
     Longer clean up times due to:
        ·       wet abrasive clinging to surface
        ·       formation of large amount of slurry of wet abrasive media
     Poor operator vision through helmet because of water and slurry build up, resulting in less precise blasting and decreased productivity

Vapour blasting

-    Little dampness on surface
-    Lower environmental impact:
        ·       Consumes less than 3 litres of water per minute
        ·       Consumes 50 kilograms abrasive per hour
-    Less mess and clean up due to:
        ·       no clinging of abrasive to surface
        ·       little dust formation
        ·       smaller amount of slurry of wet abrasive media
    Excellent operator vision for more precise blasting
     Full control over blast pressure
    Less operator fatigue and lower environmental impact
-    Injected high-pressure water adds to coating removal productivity

Want to know more about Graco’s innovative and cost-efficient vapour blasting solutions? Contact our specialist.

Source: Bundabergsandblasting

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