METHOD OF DEPOSITION OF POWDER COATINGS BY ELECTROSTATIC SPRAYING AND DEVICE FOR ITS EMBODIMENT Russian patent published in 1997 - IPC

FIELD: technology of deposition of powder coatings by electrostatic spraying; applicable in various industries in application of protective-decorative and special coatings. SUBSTANCE: method includes deposition of internal powder layer by spraying onto product with current of the first preset value, and the external part, with current of the second preset value. In so doing, current is maintained to be stabilized in deposition of at least, one part of powder layer by spraying. Current of the first preset value may be lower or higher than that of the second preset value. The device for embodiment of the offered method has former 21 of pulse-duration modulation, third current setting 20 and command-time unit 22. Device transformers 8 are narrow band. Input of former 21 of pulse duration modulation is connected with microcomputer 15, and output, with pulsed voltage regulator 6. The second output of microcomputer is connected to power amplifier. Current second setting 19 and current third setting 20 are connected to microcomputer 15 through command-time unit 22. EFFECT: higher efficiency. 11 cl, 2 dwg