In the process of using the paint room, the quality of the spray paint in the paint room has not reached the desired effect due to the interference of some factors. To solve this problem, we should first know what factors affect the quality of the spray paint in the paint room.
(1) selection of paint. The paint should be selected in strict accordance with the technical requirements. The color, appearance and mechanical strength of the same manufacturer, the same batch of coatings and coatings and the mechanical strength of the film should meet the requirements of the product design. When the reaction increases the viscosity and the reaction of the pigment and physical pigment, it can also react between the paint and the pigment, and the viscosity becomes very high, and it is very serious in the form of tofu. In this way, the paint loses its fluidity, the surface of the paint is rough, the binding force is poor, and the capacity is easy to fall off.
(2) the influence of environment on the quality of spray paint can not be ignored. As the paint room is very strict on the site, the site temperature should be controlled at 15 -35 C, humidity 35%-75%, the lacquer room should be sealed, all the air entering the paint room should be filtered by special equipment to ensure the air free dust, particles and other impurities.
(3) in the process of blending, the pigment, oil and resin can not be completely dissolved in the mixing of each component, which will cause excessive fat or excessive resin, so that the color distortion of the film, the poor covering power, poor bonding strength and not easy to dry. Therefore, the coating should be strictly checked in the process of coating and blending, first of all, the paint number and raw material should be checked. Whether the manufacturer meets the requirements and whether the coating is contaminated during the effective use period. When it is confirmed, the coatings are stirred and evenly stirred, and the required table, stopwatch, cylinder or measuring cup and viscosity cup are prepared, and then the curing agent is slowly added to the base material according to the specified proportion. In this process, the base material and the curing should be kept in the process. In order to guarantee the quality of the paint film, the quality of the coating should be guaranteed by adding appropriate diluent according to the proper viscosity.
(4) when the compressed air has water, oil and other solid particles, no matter how good the performance of the paint itself, the operator technology is more proficient, the film will appear bubbles, shrinkage, particles, binding force and other problems, which seriously affect the quality and appearance of the film. Therefore, the quality of the compressed air should be checked before the start of the work.
By understanding the factors that affect the quality of the spray paint in the lacquer room, the related operators can avoid these problems as much as possible in the lacquer room, so as to ensure the efficiency and quality of the work.