Airmix process

In conventional spraying, atomization is the result of external mechanical forces, i.e., the exchange of momentum between two free jets (air and paint). Atomization may be classified as compressed air atomization (air 0.02-0.7 MPa, paint 0.02-0.3 MPa), airless atomization (paint 8 40 MPa), air-assisted airless atomization, also termed airmix process (air 0.02 0.25 MPa, paint 2-8 MPa), and special technologies (Table 8.3). 

The combined airmix process operates at a lower paint pressure (2-8 MPa). Additional low-pressure air jets (0.02-0.25 MPa) from the air-cap bores impinge on the spray jet to mix and homogenize it. In addition to the atomizer and a compressed air generator (airless pump), the airmix unit therefore also requires compressed air for postatomization. Advantages over the airless method are the less sharply defined spray jet and the smaller droplet size. Compared with compressed air atomization, a low-mist coating is possible. 

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See also in sourсe #XX -- [ ]

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