Transfer Efficiency

Nozzle Geometry

Fluid dynamics dictate that atomized droplets follow complex aerodynamic trajectories shaped by air cap design and fluid pressure. Spray guns deposit particulate streams toward parts while turbulent boundary layers deflect a fraction of the mass away from the target zone. Metering valves control fluid delivery rates while high voltage electrostatic charges attract charged particles toward grounded workpieces.

Factory calibration procedures verify these parameters against primary standards before production shifts begin.

Boundary Drift

Environmental variables alter deposition performance across extended operational cycles. Ambient humidity changes solvent evaporation rates while booth airflow velocities disrupt droplet momentum. Viscosity fluctuations inside fluid lines modify initial droplet size distributions and alter overall deposition yields.

Operators compensate for these physical shifts by adjusting fluid pressure regulators and atomizing air caps.

Transfer Verification

Gravimetric tests determine actual deposition percentages by measuring substrate mass differentials before and after coating cycles. Analytical balances record tare weights and coated weights under controlled laboratory conditions to establish baseline metrics. Certified testing protocols eliminate weighing errors caused by volatile organic compound loss during transportation intervals.

Subsequent production audits compare shop floor measurements against these verified reference standards to quantify efficiency degradation over time.