Factors affecting the quality of paint spray in paint booth

In the process of using the paint booth, due to the interference of some factors, the paint quality of the paint booth did not achieve the expected effect. To solve this problem, we must first understand what factors affect the paint quality of the paint booth.

(1) Selection of coatings. Coatings should be selected in strict accordance with the process requirements. The same manufacturer, the same batch of coatings, the color, appearance and mechanical strength of the coating should meet the product design requirements. The coatings will appear due to improper methods during transportation. Poor transparency, turbidity, precipitation, etc.; at the same time due to solvent volatilization, improper use and oxidative polymerization and other reactions to increase viscosity; may also be due to pigment and body pigment expansion, the reaction between the paint base and the pigment, viscosity is particularly high, serious When it is made of bean curd, the paint loses fluidity. After use, the surface of the paint film is rough, the bonding force is poor, and it is easy to fall off.

(2) The influence of the environment on the quality of spray paint can not be ignored. Because the paint room has strict requirements on the site, the site temperature should be controlled at 15 °C-35 °C, humidity 35%-75%, and the paint booth should be sealed, all enter the paint. The air in the room should be filtered through special equipment to ensure that the air is free of dust, particles and other impurities.

(3) In the process of blending the paint, the stirring of the components is insufficient, so that the pigment, the oil material and the resin cannot be completely melted, which may cause the grease to be too heavy or the resin to be too much, so that the color of the paint film is distorted and the hiding power is Poor, poor bonding, not easy to dry, etc. Therefore, the paint preparation process must be strictly checked, first check the coating grade, whether the manufacturer meets the requirements, whether the paint is in use during the effective use period, whether it is contaminated. The components of the paint are stirred separately. Prepare the required table scale, stopwatch, measuring cylinder or measuring cup, viscosity cup, and then slowly add the curing agent to the base material according to the specified ratio. During this process, the mixture should be stirred continuously to make the base material. It is fully miscible with the curing agent and added with appropriate amount of diluent according to the appropriate viscosity. The formulated coating should be affixed with a perishable packaging label and placed as required. Only in this way can the performance of the coating itself not be changed. Guarantee the quality of the film.

(4) When the compressed air has water, oil and other solid particles, no matter how good the performance of the coating itself, the operator is skilled in technology, the paint film will have bubbles, shrinkage cavities, particles, and the bonding force is reduced, which seriously affects the paint film. Quality and appearance. Therefore, carefully check whether the compressed air quality meets the requirements before starting work.

By understanding the factors affecting the quality of the paint spray in the paint booth, the relevant operators can avoid these problems when working in the paint booth to ensure the efficiency and quality of the work. If you are in the process of using the paint booth, you will not know what to expect. Questions, please feel free to call us.