When the steel hall paint brush to brush more reason oil flow does not fall either, full uniform, bright color consistency. Brushing should promptly check to avoid leakage of brush. Steel topcoat usually need to brush more than twice the thickness of 70 microns.

 

    Steel hall brush finish concrete construction method:

(A) by mechanical polishing way to remove rust rust layer surface cleanliness required to achieve "the steel surface before painting Rust grades and preparation grades" (GB / T8923) provisions Sa2-Sa3 level, blasting equipment to reach Sa2.5 level; roughness reaches "assessment profile grades of steel surface before painting (compare specimens Act)" (GB / T13288) defined M-class. Do not have mechanical polishing rust construction site, the surface treatment is generally used hand wheel rust, the individual does not have the hand wheel rust place, you can use a wire brush or coarse sandpaper rust, but cleanliness must achieve "Tu mounted on steel surfaces Rust grades and preparation grades "(GB / T8923) provisions St2-St3 level. Order surface rust treatment is usually after the first outer; on next after the first.

(B), tank construction and control

Ⅰ, construction of anti-corrosion coating tank used mainly by brush, roller, etc. for anti-corrosion construction work environment should be spacious and bright, good ventilation, when necessary, with rain, wind facilities. Construction process should pay attention:

(1), high-altitude safety, to settle the necessary scaffolding and scaffold boards.

(2) significantly uneven welding seam should be processed and polished to make it a smooth surface.

(3), of the opening, the free edges, corners and other locations, to be painted many times, to ensure that meet the design requirements and coating thickness.

(4) clean up the site after construction is completed.

(5), sudden change in weather temperatures should be suspended construction, after the weather temperature is normal again before construction.

Ⅱ, tank repair defects found in the detection of substandard construction site location, should be promptly repaired. Repair method is to use sandpaper or a grinding wheel or a thin coating of the leak location and the surrounding area radiation and coating 5cm roughing, re-coating. After curing the leak again and check the thickness, until qualified.