Tip #13 - Compressed air

Compressed air is, with abrasive, one of the most important components of the entire abrasive blast system.

1. Compressed air has to be clean.
It has to be free from any trace of oil and moisture.

• oil would contaminate abrasive and thus blasted surfaces
• moisture would cause flash rusting and abrasive pot clogging

2. Air supply has to be adapted to the application
Abrasive velocity and flow rate, which determine the productivity of a blasting operation, are directly linked to air pressure and flow rate. Influential parameters are:

• compressor characteristics
• pressure loss through hoses and fittings
• nozzle wear
   

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