Anticorrosion technology of water gate by spraying zinc with oxygen-acetylene flame wire

       The process of spraying zinc on the water gate is as follows:



     (1) Sandblast the sprayed surface to remove rust and roughen the surface of the water gate.

     (2) Spray zinc wire with SQP-1 spray gun. The pressure of acetylene is 0.04MPa~0.05MPa, the pressure of oxygen is 0.4MPa~0.5MPa, and the pressure of compression is 0.5MPa~0.6MPa. In order to ensure the quality of the coating and its bonding strength to the substrate, the ratio and pressure of oxygen and acetylene should be strictly controlled during the spraying process, so that the flame is a neutral flame or a slightly carbonized flame, and the spraying distance is generally controlled within 150mm~200mm. The thickness is generally controlled at about 0.3mm. Apply multiple sprays to this thickness to prevent the coating from peeling off.

     (3) After the coating has passed the inspection, it should be painted and sealed. If there are pores in the coating, it should be sealed with paint. The paint is generally asphalt paint.

     If the spraying zinc protection method is adopted, the service life of the water gate can be extended to 15 to 20 years.

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