Common knowledge of coating: solution to common problems in air spraying

Core tip: air spraying is the current paint coating construction, especially in the furniture coating used more widely in a finishing process Air spraying is to use the air flow of compressed air to form a negative pressure through the nozzle hole of the spray gun The negative pressure causes the paint to be inhaled from the suction pipe, and then ejected through the nozzle to form a paint mist The paint mist is sprayed on the surface of the painted parts to form a uniform paint film In the actual production, air spraying often appears some spraying defects, if not corrected in time, it will affect the spraying quality (1) When spraying, if there is too much paint mist atomization, the amount of paint liquid adhesion on the surface of parts will be reduced Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Paint Home News: air spraying is the current paint coating construction, especially in the furniture coating used more widely in a finishing process Air spraying is to use the air flow of compressed air to form a negative pressure through the nozzle hole of the spray gun The negative pressure causes the paint to be inhaled from the suction pipe, and then ejected through the nozzle to form a paint mist The paint mist is sprayed on the surface of the painted parts to form a uniform paint film In the actual production, air spraying often appears some spraying defects, if not corrected in time, it will affect the spraying quality (1) When spraying, if there is too much paint mist atomization, the amount of paint liquid adhesion on the surface of parts will be reduced This is mainly due to excessive air pressure and insufficient paint liquid output At this time, the air pressure should be properly reduced to increase the paint delivery (2) Insufficient spraying during spraying, spray gun work interrupted This is mainly because the air pressure is too small At this time, the air pressure should be increased appropriately (3) spray density is uneven or spray intermittently This is mainly because the vent or spray hole of the nozzle is blocked, or the paint solution has been used up At this time, it is only necessary to clean the nozzle or add paint solution to restore normal spraying (4) At the beginning of spraying, the main reason is that the spray gun thimble does not cross the open air channel Adjust the nut at the end of the thimble to make the thimble exceed the air channel (5) If the spray gun can only spray round paint mist flow, it cannot be adjusted to flat paint mist flow This is mainly due to the blockage of the air outlet on the nozzle Cleaning the air outlet can adjust the flat paint mist flow (6) The paint is coming out of the nozzle This is mainly caused by the blockage of the spray gun or the lax sealing of the thimble, the abrasion of the nozzle or the tightness of the screw Clean the nozzle or tighten the nozzle If it is damaged, replace the nozzle with a new one, and paint penetration can be eliminated In short, as long as the construction environment is well controlled and the methods and techniques of air spraying are mastered, the ideal spraying effect can be obtained Paint the surface of furniture products to be pleasing to the eye Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,