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    Home > Coatings News > Paints and Coatings Market > Common knowledge of coating: solution to common problems in air spraying

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

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    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

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    Roller coating in extremely harsh working environment 2

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    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,
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