Knowledge about hot spray zinc
Hot spray zinc, I believe everyone is very familiar with it. Today, Xiaobian will come to learn about hot-spraying zinc.
The principle of hot-spraying zinc is to use high-pressure air and pipe to blow the sand to the surface of the workpiece to remove the rust and scale of the metal surface, and increase the adsorption force on the surface to increase the adsorption of the thermal spray layer, and then use oxygen, acetylene or electric heat source ( The large workpiece is electrically heated, and the small and medium-sized ones are heated by oxygen and acetylene. The zinc is atomized and sprayed onto the metal surface by compressed air and special tools (guns).
Because of the sandblasting, the coating is effectively adhered for protection, and the anti-corrosion effect is maintenance-free for more than 20 years. Although the initial investment is larger than the spray paint, the spray paint will be maintained after two or three years. The long-term manpower and material cost are much higher than the hot spray zinc. The whole construction process of hot-spraying zinc anti-corrosion is divided into four parts: surface treatment→spraying→sealing treatment→quality inspection.
When we finish our work, we have to conduct a comprehensive inspection of it.