How to specify the thickness of equipment surface coating?

Generally speaking, the paint film thickness of metal equipment primer is not less than 75μm, the paint film thickness of middle coat is not less than 100μm, the paint film thickness is not less than 50μm, and the total dry paint thickness after painting is not less than 225 μ m.. The shelf life of external paint is 5 years, and the paint shall not produce bubbles, corrosion, discoloration or fall off within 5 years.

Equipment surface painting requirements:

A. The temperature and humidity at the metal spraying site have obvious influence on the quality of the sprayed film. Attention should be paid to keeping the temperature of the paint construction site within the range of 10 ~ 30℃ and the relative humidity not exceeding 80%. The construction site must be kept clean and orderly.

B. air spraying is generally used for metal surface coating. Pay attention to keep the distance between the spray gun and the sprayed surface within the range of 200 ~ 300 mm, and control the compressed air pressure within the range of 2 ~ 4 kg/cm ㎡, so as to effectively ensure the coating quality.

C. Select the coating type according to the coating performance, applicable environment and other conditions, so as to give full play to the anti-corrosion protection function of the sprayed coating. The selection of paint base, solvent and additives should be appropriate, and the proportion must be strictly in accordance with the technological requirements to ensure full and uniform stirring and dilution to the specified working viscosity.