From the point of view of humidity and air volume, how to choose spraying tools and equipment adapted to the characteristics of water paint

The water content in the paint exceeds
60%
, and due to the high water content, temperature and humidity are important parameters that need to be controlled in the gun room. In addition, the air volume, i.e. the air flow that touches the surface of the water paint, is also a key factor affecting the quality of the water paint spray. Because there are strict requirements for temperature, water paint spraying work is carried out in the paint room, the temperature can be controlled, so no longer elaborate. The following mainly from the point of view of humidity and air volume to discuss how to choose the characteristics of water paint spray tools and equipment.(See all pictures on China Paint Online News)The optimum temperature of the paint room sprayed with water paint is
20
degrees C to
26
degrees C, and the optimum relative humidity is
60%
to
75%
. The allowed temperature is
20
to
32
degrees C, and the allowed relative humidity is
50%
to
80%
. Therefore, the paint room must have a suitable temperature control and humidification device. Domestic car paint room in winter can be temperature and humidity, but in summer there are few temperature control wet, because the need for cooling capacity is too large, so there are few cold air. Therefore, in high temperature and high humidity areas, if the use of water paint, must be installed in the paint room central air conditioning, summer also need to send cold air, in order to ensure the quality of water paint construction.(see full picture news from China Paint Online)paint is slower to dry than solvent paint, especially in summer. Because solvent paint evaporates quickly, water paint is not very sensitive to temperature. For example, some
4S
stores failed to deliver the repair vehicles to customers in a timely manner, mistakenly believed to be the reason for the water paint drying too slowly, in fact, there may be water paint supporting equipment is not in place, lacquer workers are not familiar with water paint, water paint color too much. The average flash drying time of water paint is
5

8min
, less than solvent paint. To achieve this speed, the blower must be relied upon, which can quickly increase the leveling of the water paint. Under the premise that the hair dryer can effectively improve the drying speed of water paint, the lacquerer should consider how the spray gun can control the leveling of water paint. Drying speed and leveling is a variable that restricts each other, and the pursuit of drying speed of water paint will affect leveling, and lacquer workers should adjust the spray gun according to the different temperatures of the local weather.(See all the pictures on China Paint Online)is not consistent due to local climate and other factors, so we need a spray gun can be both atomization and air flow advantages. There is a water-painted spray gun called
Devilbiss TTS
that can be used in three different wind caps and three different nozzles for different climatic conditions. The gun is simple to remove, the
1min
can be completed within the wind cap and nozzle replacement, can achieve the
HVLP
gun and medium pressure medium flow gun effect. This spray gun has been recommended by major coating applications in Europe and the United States, in the United States DuPont brush technical service personnel received customer complaints, the first to ask customers to replace the
TTS
spray gun. For car owners, the drying speed of the paint doesn't make any sense, they focus on the smoothness, gloss and color of the paint. Therefore, lacquer workers in the spraying of water paint work, can not be quick, should pay more attention to the overall performance of water paint.
water paint itself has environmental characteristics, which determine that it can reduce emissions for auto repair, the implementation of low-carbon to make a significant contribution. At present, China's water paint spraying to achieve the european and American countries as common use of the development situation is still some time, but the major application enterprises have begun to adapt to global trends, and actively practice water paint spraying applications. We also call for more companies to participate in the promotion of water paint to create a new model of green maintenance.
。