Patent ID: 6283386
Filing Date: 2001-09-04
Classification: B05B,B05D,C23C

Abstract:
Apparatus for kinetic coating of particles to an substrate, the apparatus comprising:a nozzle body including a mixing chamber upstream of a supersonic nozzle;A main air flow passage connecting the mixing chamber with a source of high pressure air;an injector tube extending into the mixing chamber in axial alignment with said nozzle, said main air flow passage and said injector tube having a cross-sectional area ratio of at least 80/1;connecting means connecting the injector tube with a source of coating particles entrained in high pressure air for mixing with air flow in the main air passage;said nozzle being configured to accelerate the flow of air mixed with coating particles to a supersonic flow rate adequate to coat said particles onto a substrate by impingement without melting of the particles in the air stream.