INYECTOR DE POLVO NO OBTURABLE PERFECCIONADO PARA UN SISTEMA DE BOQUILLA DE ROCIADURA CINETICA

• Main Authors: ZHAO, ZHIBO, ROSEN, JOHN S, JR, IRISH, MICHAEL JOHN, GILLISPIE, BRYAN A, HAN, TAEYOUNG
• Format: Patent
• Language: Spanish
• Published: 16.03.2009
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; NOZZLES; PERFORMING OPERATIONS; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING

Un inyector (48) de polvo para una boquilla (34) de rociadura cinética, comprendiendo dicho inyector de polvo: un tubo (50) de inyector y caracterizado por un manguito (72); en el que dicho tubo (50) de inyector es recibido dentro de dicho manguito (72) y fijado a dicho manguito; y en el que un espacio (76) de aire es definido entre el diámetro interior de dicho manguito (72) y el diámetro exterior de dicho tubo (50) de inyector, en el que dicho espacio de aire es de 25 a 200 micrómetros. An improved kinetic spray nozzle system design is disclosed. The nozzle includes an improved powder injector having an injector tube and a sleeve wherein the injector tube is received in the sleeve and secured to the sleeve. The powder injector further includes an air gap defined between an inner diameter of the sleeve and an outer diameter of the injector tube wherein the air gap is from 50 to 200 microns. The improved injector is capable of spraying a variety of powder materials including hard and "gummy" powders without clogging for extended periods of time. The improved injector design allows the use of higher main gas temperatures to achieve improved coating formation and deposition efficiencies. Most importantly, the improved design makes it possible to use the kinetic spray system with a wide range of powder materials in a manufacturing setting without interruptions caused by powder injector clogging.