In the anti-corrosion coating during the spraying process sometimes there will be sagging phenomenon, or called tears or draining. The coating is locally thickened and appears to be in a vertical state due to gravity, only on the surface where the sprayed surface is placed vertically or vertically.

1, diluent used improperly. It is possible to use a diluent with a slow drying rate or use an excess of diluent.

2, guns used improperly. For example, the compressed air pressure is too low, or the distance between the spray gun and the spray surface too close, or the gun moving too slow, will increase the possibility of sagging phenomenon. Should be appropriate to adjust the shape of the beam and spray pressure, so that the injection distance maintained at 20 ~ 25cm, and the gun moving speed should be uniform. Grasp the amount of spray spray limit spray, focus on the edge of the film to observe the formation of the situation while spraying.

3, spraying the workshop temperature is too low, spray the anti-corrosion coating paint layer is not easy to dry, or a one-time spray paint layer is too thick, resulting in anti-corrosion coating drying speed is too slow. Spray the follow-up paint layer, should be sprayed with the previous anti-corrosion paint paint to allow enough dry time. Before placing the sprayed surface vertically, allow sufficient standing leveling time for the paint.Sagging phenomenon is mild, to be dry after the first dry sandpaper wet grinding with a defective area, and then waxing polishing, sagging serious, polished defective area after the re-painting.

The emergence of sagging situation can do the following patch:
1, occurs in the plain single surface finish or varnish layer, and other paint film completely hardened, with P1200 or P1500 sandpaper polished.
2, the background paint lined up, polished after hanging paint film and then re-spray.
3, countermeasures:
1) the use of fine paint resin materials and the amount of thinner.
2) the construction environment temperature and humidity appropriate.
3) the choice of paint brush, bristles to be flexible, thick roots and thin, thick and thick mane mouth Oil brush dipped in oil should be less dipped in dipped.
4) in the construction should try to make the grassroots level, grinding angular. Brush, the force brush evenly, the first vertical brush, after the horizontal brush, do not cross coated smudge.
5) should be selected with the coating of thinner.
6) thoroughly clean up the surface of the debris, oil, water and other debris.
7) When the paint film is not completely dry, in a side or a surface part of the paint flow fall, the blade can be used to eradicate the excess paint.