METHOD AND DEVICE FOR APPLYING TWO-LAYER COATINGS TO CYLINDRIC ARTICLES Russian patent published in 1995 - IPC

FIELD: coating articles. SUBSTANCE: article is heated before coating up to 100-200°C and is then sprayed with metal and polymer, walls of supersonic nozzle being cooled. The device is provided with chamber for heating the article, nozzle unit mounted for permitting rotation, multi-channel supersonic nozzle, spraying chamber, and rotor batcher consisting of feeder and receiving tank mounted at the outlet of the feeder interconnected through a pipe line. The spraying chamber is rigidly secured to the nozzle and constructed as a metallic box provided with a curved port arranged perpendicular to the nozzle axis. The rotor is mounted at the inlet of the receiving tank. The rotor has cellular surface. The receiving tank is provided with hollow cylinder mounted inside the tank for permitting rotation, staggeringly mounted ladle scoops, and chute whose top part is a conical cap. EFFECT: simplified method and improved design. 3 cl, 4 dwg