In recent years, due to environmental protection and other factors, the national and local governments have introduced policies to promote volatile organic pollution control, improve the VOC limit standards for coatings and other products, encourage the promotion of water-based coatings. According to the data, the VOC emission of waterborne spraying can be reduced by 60%-70% compared with oil spraying.
In the coating market, environmental health, construction is convenient, water-based coatings with good corrosion resistance and so on merits, won the industry and the vast majority of consumer recognition and rods, there is no doubt that it will be the future coating market development direction, sea along the wood armored here small make up for you to share some of water-based coating construction skills.
Technique 1
Use clean water to adjust the coating to the appropriate coating viscosity, with the coating -4 viscometer measurement, the appropriate viscosity is generally 20~30 seconds. Of course, also not too thick more cannot too thin, usually with lacquer fluid into a straight line, instant namely break off the flow becomes drop down, this kind of viscosity is appropriate.
Technique 2
In the water paint spraying construction operation, the best air pressure in 0.3-0.4 mpa (3-4 kg force/square cm), the pressure is too small, affecting the overall effect, and the pressure is too large, not only waste the material will affect the operator's health.
Technique 3
The distance between nozzle and object surface is generally appropriate to 300~400 mm, of course, also can be adjusted in a small range of 10 mm ~50 mm, if not in the range, then it is difficult to obtain the most ideal paint film.
Technique 4
The spray gun can be moved up and down, left and right, with the speed of 10-12 m/min uniform operation is the best, of course, the nozzle should be straight on the surface of the object spraying, as far as possible to reduce the oblique spraying.
Technique 5
Spraying to the next pressure on the top 1/3 or 1/4, so as not to appear leakage spray phenomenon. When spraying quick-drying paint, need to be sprayed in a sequence, the effect is not ideal.
