PORTABLE APPARATUS FOR GASODYNAMIC DEPOSITION OF COATINGS Russian patent published in 2005 - IPC

FIELD: machine engineering, other branches of industry, namely deposition of coatings of powder materials for imparting different properties to coated surfaces.

SUBSTANCE: apparatus includes deposition unit having electric heater of compressed gas and supersonic nozzle. The last is rigidly joined with outlet of electric heater and has member for introducing powder to nozzle. Apparatus also includes control unit connected with electric heater of compressed gas by means of flexible pipeline and electric cable; powder feeder whose outlet is connected with member for introducing powder to nozzle by means of flexible pipeline. In order to enhance operational safety of apparatus due to lowered temperature of outer members of electric heater of compressed gas, the last includes casing in which metallic housing is arranged with gap filled with heat insulator. Fuel member is arranged in metallic housing having openings for blowing non-heated gas through casing. Member for introducing powder to nozzle is provides powder feeding to supercritical portion of supersonic nozzle at inclination angle relative to its axis.

EFFECT: enhanced efficiency of apparatus due to uniform distribution of powder along nozzle.

39 cl, 13 dwg