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Special explosion-proof lamps for grain warehouses Steel structure grain warehouse: We all know that steel structure grain warehouses are green buildings, but for this building, we still need to understand its habits. So, how much do you know about the anti-corrosion measures of steel structure grain warehouses? According to the person in charge of Longjushan Steel Structure Installation Company in Jilin Province, the anti-corrosion measures for steel structure grain storage are as follows: Weather-resistant steel: Steel whose corrosion resistance is better than that of general structural steel is called weather-resistant steel, which generally contains phosphorus, copper, Nickel, chromium, titanium and other metals form a protective layer on the metal surface to improve corrosion resistance. Its low-temperature impact toughness is also better than ordinary structural steel. The standard is "Weathering Steel for Welded Structures" ().
Hot-dip galvanizing: Hot-dip galvanizing is to immerse the rust-removed steel components in zinc liquid melted at a high temperature of about ℃, so that a zinc layer is attached to the surface of the steel components. The thickness of the zinc layer shall not be less than that for the following thin plates, and shall not be smaller for thick plates. Less than. This serves the purpose of preventing corrosion. The advantages of this method are long durability, high degree of industrialization of production, and stable quality. Therefore, it is widely used in outdoor steel structures that are severely corroded by the atmosphere and are difficult to repair. Such as a large number of transmission towers, communication towers, etc. In recent years, a large number of profiled steel plates in light steel structural systems have appeared. Hot-dip galvanizing is also commonly used to prevent corrosion. The first process of hot-dip galvanizing is pickling and rust removal, followed by cleaning. Incomplete processes in these two processes will leave hidden dangers in anti-corrosion. So it must be dealt with thoroughly. For steel structure designers, they should avoid designing components with fitting surfaces to avoid incomplete pickling or incomplete acid cleaning in the gaps between the fitting surfaces. Causes yellow water to flow on the galvanized surface. Hot dip galvanizing is performed at high temperatures. Tubular members should be left open at both ends. If both ends are closed, the air in the pipe will expand and the head plate will burst, causing a safety accident. If one end is closed, the zinc liquid will not flow smoothly and will easily accumulate in the tube.
Thermal spray aluminum (zinc) composite coating: This is a long-term anti-corrosion method that is equivalent to the anti-corrosion effect of hot-dip zinc. The specific method is to first sandblast and remove rust on the surface of the steel components to expose the metallic luster and roughen the surface. Then use an acetylene-oxygen flame to melt the continuously sent aluminum (zinc) wire, and blow it to the surface of the steel component with compressed air to form a honeycomb-shaped aluminum (zinc) spray coating (thickness is about ~). Finally, the capillary pores are filled with paint such as epoxy or neoprene paint to form a composite coating. This method cannot be constructed on the inner wall of the tubular component, so both ends of the tubular component must be airtightly sealed so that the inner wall will not corrode. The advantage of this process is that it has strong adaptability to component size, and the shape and size of components are almost unlimited. Ship locks as large as Gezhouba are also constructed using this method. Another advantage is that the thermal impact of this process is localized and constrained, so no thermal deformation occurs. Compared with hot-dip galvanizing, this method is less industrialized, sandblasting aluminum (zinc) is labor-intensive, and the quality is also easily affected by the operator's emotional changes.