Air spraying methodAir spraying method.doc

Air spraying method 1. Air spray method using special airbrush paint inhalation with compressed air, the nozzle and the spray gun 1541 h410000 mechanical and electrical engineering Airflow coating dispersed into particles into the coated surfaces, attached to the workpiece surface. Air spraying method is the most widely used Suffused with a coating method, can be applied to almost all varieties of paint, the law is the biggest characteristic of uniform thickness, light can be obtained Slide smooth coating. But the low utilization rate of air spraying coating, and due to solvent evaporation, air pollution also relatively Serious. 2. The main technical points. When spraying, should according to the spray gun product technical file to adjust the air pressure, gushing quantity and spray painting And the spray test to determine. Spraying distance should be determined according to the size of the spray pressure and nozzle. (4) high-pressure airless spraying method 1. High-pressure airless spraying is to make the coating by pump pressure after the hole nozzle. Coating after leaving the nozzle will be made The dramatic expansion, tearing into very fine particles and coating on the surface, its main characteristic is not general air spraying The coating rebound phenomenon of paint mist float in the sky and, thus not only saving the paint, and reduce the pollution, improved The working conditions. At the same time, it also has the characteristics of high efficiency, than the general air spray to raise several times to dozens of times, and coating Film quality is good, suitable for large area coating of object. 2. The main technical points. High-pressure airless spraying nozzle and spray distance on the surface of the appropriate for 300 to 500 mm. The nozzle and the Spray surface into 30 degrees to 80 degrees. Spray painting of the lap joint should be for 1/6 to 1/4 width, and should be consistent. The running speed of spray gun Appropriate for 600 to 600 mm/