① plug the mouth
Because:
1. Spraying the paint before the spray is not fully shaken, resulting in spraying the bottom of the tank when the deposition of paint plug the nozzle; 2. Spray the paint before spraying force is too large, resulting in stir (glass beads) broken plug the nozzle; In the process of inversion or side down, the paint in the paint precipitation blocked the valve outlet; 5. more than the shelf life of the product, the contents of the back to the rough plug the valve Outlet hole.

Precautionary measures: 1. Before spraying enough to shake the paint; 2. Master shake the correct way to shake the paint, to avoid shaking the paint when the force is too much; 3. After a spray after use, should be inverted lacquer spray 3 seconds, Remove the nozzle after the paint and then stored to ensure that the next normal use; 4. During the storage process should not be inverted or inverted tank body.

Correction method: 1. After shaking the lacquer solution, pour the paint box for 3 seconds, and use the gas to open the jammed nozzle; 2. Replace the new nozzle.
② spray endless (spray pressure drop)
Because:
1. spray spray when the phenomenon of back spray; 2. paint when the paint tank over-tilt, tilt more than 45 °; 3. automatic painting storage time is too long, more than the shelf life; 4. valve guide tube bending direction and nozzle hole direction in contrast.

Precautionary measures: 1. master the correct spraying technology, to avoid pouring; 2. spray to avoid the paint tank tilt angle of more than 45 °; 3. to avoid the use of expired paint products; 4. When spraying to the remaining 20% Feel the discharge of the concentration is not enough (spray to propellant-based), the nozzle rotation 180 ° angle to continue to use.

Correction method: 1. When the spray pressure is found when the spray as much as possible once the use of spray paint; 2. Spray pressure is low and the temperature can be used when the lower 50 ℃ water bath spray painting and then construction.
③ poor hiding power (thin paint, paint viscosity is too low)
Because:
1. Spraying the paint before the paint is not fully shaken; 2. Spray paint when the tilt angle is too large, so that the gas content of the spray material is high, the paint is diluted; 3. Spraying the site of cold weather, the temperature is too low; Site lack of heating equipment, air circulation is not good; 5. a one-time spray too thick (flash color).

Preventive measures: 1. Master the correct spraying technology, to avoid pouring, oblique spray; 2. Avoid rain, damp, cold weather construction.

Correction method: in the room temperature environment or spraying the workpiece into the 50 ℃ heating equipment.
④, orange peel
The reason is: 1. Spraying distance is too far or too close; 2. Lacquer spray uneven; 3. Spray too thick or too thin.

Preventive measures: 1. Master the correct spraying technology; 2. Full vibration shake the lacquer or appropriate heating; 3. Index finger press the nozzle when the force evenly to ensure that the amount of paint evenly.

Correction method: mild orange peel to the film thoroughly dry after more than P1500 sandpaper polished after polishing the wax polishing to remove, a serious orange peel to be dry after the P800 sandpaper polished and then heavy spray.
⑤ sagging
The nozzle is too close to the surface; 2. The nozzle is moving too slowly; 3. Spraying the environment is poorly ventilated; 4. Spraying the time between the layers of the flash dry time; 5. The coated surface is contaminated.

Precaution:
1. Use the correct spray distance (15-25cm); 2. Maintain the normal nozzle moving speed (30-60cm / s); 3. Keep the environment well ventilated; 4. Depending on the temperature set the corresponding inter-layer flash dry time (3- 10min); 5. Make sure that the painted surface is completely clean before painting.

Correction method: 1. slightly flowing to be completely dry film (room temperature 16h) after more than P1500 sandpaper polished with a flattened waxing can be polished; 2. serious flow to be fully dry after more than P800 sandpaper polished flat Heavy spray.
⑥ whitening (white mist)
The reason is: 1. Spraying the environment humidity; 2. Spraying the site ventilation cold.

Precautions: 1. Avoid rain, high temperature and high humidity weather construction.

(50 ℃) baking; 3. Paint film after drying to remove the wax after polishing; 4. Severe pan White to be completely dry after the film polished flattened heavy spray.
⑦ bubbles, paint particles
The reason is: 1. The paint is not mixed evenly; 2. Finger press the nozzle force is uneven, the nozzle out of paint is poor, resulting in paint; 3. Film spray is too thick; 4. The coated surface contaminated.

Precautions: 1. Spray the paint before the spray to the uniform mixing; 2. Constant spray; 3. Spray clean thoroughly before being coated.

Correction method: 1. slightly bubbles, paint particles can be dry after the dry cloth to clean the cloth and then continue to spray; 2. serious bubbles, paint particles to be completely dry after the P800 sandpaper polished flat after the heavy spray.
⑧ bite the end
The reason is: 1. Bottom, topcoat is not matched, the paint solvent on the primer solubility; 2. Primer layer is not dry that is spray paint; 3.

Preventive measures: 1. To avoid direct spraying on oil-based paint and other one-component paint; 2. In the bottom of the paint is not coupled with spray painted in the paint; 3. Construction should be thin spray several times, Foot flash dry time.

Correction method: to be completely dry after the film, shovel to bite the bottom of the site, fill the bottom ash, dry and flatten the spray after the coating and then spray paint.
⑨ wrinkle, wrinkles
The reason is: 1. Film spray is too thick; 2. Self-drying conditions, such as low temperature, high humidity or excessive ventilation. 3. Spraying ambient air is contaminated or poorly ventilated.

Preventive measures: 1. Avoid spraying thick film; 2. Ensure that the paint environment of the air fresh and have normal temperature and humidity.

(Or with BOTNY paint remover to remove), re-fill the bottom ash, the primer and then spray the spray.
⑩ dust, particles
The reason is: 1. The surface is not clean clean; 2. Spraying environmental pollution, such as dust, dust and other air; 3. Other sources of pollution such as the operator who cover the dust on the newspaper.

Precautions: 1. Clean the surface thoroughly. 2. Ensure that the spray environment clean and clean the air. 3. Remove any possible sources of contamination. 4. The seal will be dusty surface.

Correction method: 1. slight particles or dust to P1200 sandpaper after wet grinding can be polished. 2. Severe dust, grain polished after leveling the heavy spray.
⑾ dry spray (coarse grain)
The reason is: 1. nozzle distance is painted too far; 2. spray cans moving too fast;

Preventive measures: 1. Master the good spray technology; 2. Ensure a good spray environment;

Correction method: 1. Dry dry paint to dry after more than P1200 sandpaper wet grinding after polishing to restore gloss can be. 2. serious dry spray to P800 sandpaper after grinding and then heavy spray.
⑿ cracking
The reason is: 1. Bottom paint is not matched, the bottom of the coating and topcoat coating flexibility and soft and hard degree of the gap; 2. Primer coating is not dry that is spray paint; Thick; 4. old primer layer aging, powder, brittle crack caused by. ;

Preventive measures: 1. Confirm the bottom, the topcoat can be matched, if necessary, add spray coating; 2. Master the correct spraying technology; 3. The aging of the paint should be removed and then spray paint.

Correction method: shovel to bare metal or paint off after heavy spray.

Peeling off
The reason is: 1. The substrate is oil, rust or dust and other stains; 2. Substrate metal surface is too smooth or not polished; 3. Old paint layer aging, powder, crisp and so on.

Precautions: 1. Make sure that the surface is completely clean; 2. Spray the metal surface with sandpaper before spraying. 3. Remove the aged coating and spray the finish.

Correction method: shovel to peel off parts and the surrounding area is not strong after the re-construction.
⒁ rust
(Such as pinholes, bubbles, etc.); 3. The surface of the substrate is contaminated, such as fingerprints, water traces, etc .; 4. The surface of the paint is not completely removed; Plus spray rust coating or coating is too thin, causing water, gas infiltration corrosion of the substrate.

Precautions: 1. Ensure that the substrate is thoroughly cleaned; 2. Make sure the finish is intact; 3. Apply the undercoat to the topcoat if necessary.

Correction method: with (Lu Xing brand) paint remover to remove the rust of the old paint or shovel to bare metal plate after re-construction.
⒈ powder
The reasons are: 1. The coating is exposed to strong sunlight for a long time; 2. The industrial dust, water vapor and harmful gases (such as carbon dioxide, sulfur dioxide, etc.) are high in the air.

Preventive measures: 1. To avoid long-term exposure to the sun in the coating; 2. Try to keep the coating clean.

Correction method: with (Lu Xing brand) paint remover to remove the powder of the old paint or shovel shovel to bare metal plate after re-construction.