FIELD: electrical engineering; spraying powder coatings on bulbs of lighting lamps.
SUBSTANCE: method includes bulb preheating, electrical charging of powder mixture particles by applying voltage to respective device sprayer, dosed spraying of powder mixture onto bulb surface, its uniform distribution under electrostatic forces, and bulb evacuation; temperature ratio for bulb preheating (Th, °C) and bulb glass softening (Ts, °C) is 0.2 - 0.35; voltage applied to sprayer ranges between 17 and 50 kV; vacuum maintained within bulb in the course of spraying is between 50 and 400 Pa.
EFFECT: reduced powder mixture consumption at good adhesion of coating to lamp bulb.
1 cl, 2 dwg, 1 tbl
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