The core function of an electrostatic powder spray gun is to stably deliver powder to the nozzle, giving the powder particles an electric charge. The electric field between the spray gun and the grounded workpiece then guides the charged powder towards the workpiece surface for deposition. The movement of the powder is not solely determined by electrostatics; the airflow, particle inertia, workpiece geometry, grounding status, and powder properties all contribute to the final result.
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