How to take anti-corrosion measures for prefab house

1. Steel: The prefab house generally uses some corrosion-resistant steel, which is generally called weathering steel; the weathering steel contains phosphorus, copper, nickel, chromium, titanium and other metals, which will affect the steel surface. It forms a high protective effect, thereby improving the corrosion resistance of steel; the prefab house directly faces the natural climate of sunlight, rain, frost and snowfall, and the low temperature impact toughness of weathering steel is also better than that of ordinary structural steel.

2. High temperature zinc: Hot dip zinc is a high temperature resistant product; its production process reaches 600 degrees high temperature immersion. There is such a layer of zinc layer on the surface of the steel member, and the thickness of the zinc layer has reached 5 microns, and the zinc layer attached to the surface of the steel member is also specified in detail, the thin plate shall not be less than 65 microns, and the thick plate shall not be less than 86 microns. Thereby high temperature resistance, corrosion resistance. The advantages of this process are that the high temperature is not easy to change, the cycle is long, and the quality is guaranteed. Therefore, this product is widely used in outdoor large-scale steel structures and then cleaned; for the design of steel structures, we should avoid designing components with bonding surfaces to avoid incomplete pickling or pickling in the gaps of the bonding surfaces; resulting in galvanizing Yellow water appeared on the surface. Hot dip galvanizing is carried out at high temperature.

3. Coating method: The corrosion resistance of the coating is generally not as good as that of high-temperature zinc, so outdoor steel structures are mostly used in indoor steel structures or are relatively easy to maintain. This coating is characterized by low cost and more use in interior steel structures. This coating is rust-resistant, does not require high temperature resistance, and does not require direct exposure to the climate of nature. The first step in the construction of the coating method is rust removal. The coating is more demanding than the high-temperature zinc rust removal. Therefore, sand blasting is generally used to remove all the rust and oil stains in the painting with high requirements. Coatings applied in the field can be rusted manually. Coatings are more demanding on the environment. There should be less dust in the coating construction environment, no dust on the surface of the components, and no rain within four hours after painting. Different coatings have different resistance to different corrosion conditions.

4. Thermal sprayed aluminum (zinc) composite coating: The advantage of this coating is that it has a strong effect on component size. Adaptable, can be made into almost the shape and size of the part. Another advantage is that the high temperature of the coating is localized and therefore does not change due to high temperature.

Combined with this, the corrosion resistance of the steel structure prefab house is getting stronger and stronger, and the modern processing is getting more and more perfect. The main structure of the prefab house is steel, and the quality of the prefab house depends on the quality of the steel and the quality of the coating.

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