Ship corrosion preventing method
A ship and anti-rust pigment technology, applied in anti-corrosion coatings, coatings, special surfaces, etc., can solve the problems of affecting ship operation and maintenance costs, shortening the life of cabins, narrow spaces, etc., to achieve enhanced compactness and ion penetration resistance , Improve anti-corrosion performance, improve the effect of adhesion
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Embodiment 1
[0029] A ship anticorrosion method, comprising the following steps:
[0030] (1) Steel plate surface pretreatment: use shot blasting line for pretreatment to remove oil, water and sundries on the surface.
[0031] (2) Substrate sanding treatment: Sand the substrate to Sa2.5 level standard. During this process, the compressed air pressure is 0.4-0.5MPa, the diameter of the steel shot is 1.0-1.1mm, and the hardness of the steel shot is HV400-450. Nozzle diameter 4-6mm.
[0032] (3) Sandblasting for repairing structural defects such as welds: the surface to be coated is sandblasted to Sa2?, with a roughness > 80 microns; the abrasive is steel grit,
[0033] Copper ore; the maximum allowable salt value is 240μs / cm; the dust distribution level of the surface dust particle size is "3", "4" and "5". When spraying, the spray gun is kept perpendicular to the surface to be coated, and the distance is 200 ~ 250mm.
[0034] (4) Applying the primer: Use compressed air to remove the rema...
Embodiment 2
[0042] Operation steps are identical with embodiment 1, difference is:
[0043] The primer is an acrylate primer, comprising the following components by weight: 35 parts of fluorinated acrylate, 29 parts of silicone rubber, 1.5 parts of zinc phosphate, 1.5 parts of calcium phosphate, 1.5 parts of aluminum tripolyphosphate, TiO 2 5 parts, ZnO5 parts, CaCO 3 5 parts and SiO 2 5 servings.
Embodiment 3
[0045]Operation steps are identical with embodiment 2, difference is:
[0046] The top paint comprises the following raw materials in parts by weight: 55 parts of polyurethane, 20 parts of graphite flakes, 1.5 parts of propylene glycol, 1.5 parts of polyethylene wax, and 1.5 parts of modified hydrogenated castor oil.
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