What are the factors that endanger corrosion of weathering steel screen?

Elements that harm corrosion of weathering steel outdoor fence screen panels
Weathering steel outdoor corner privacy screen are more common in today's daily life, and the erosion of all metal materials begins with the surface layer.
In some cases, such as aluminum profiles, the surface layer will produce an air oxide layer, which becomes a barrier layer to prevent further contact with co2, thus inhibiting the production of etching. The air oxide layer of the iron group in the dry gas is too thin to be seen by human eyes, and it shows the maintenance of iron. However, in wet and cold conditions, metal sulfides of the compound will be produced, and iron will become more and more porous, able to digest and absorb co2, so that the etching is sufficient.
We have been working diligently for decades, with varying levels of success, on the basis of adding other chemicals to pure metal materials to stop or block corrosion. A small amount of a chemical added to the iron will accelerate the rate of corrosion, but some other chemical will stop the corrosion. Adding aluminum to copper makes it more resistant to corrosion. The selection of raw materials that are not easy to produce etching problems depends on the defect of the original metal material, its process performance is usually a certain lack, or because of the cost of aluminum alloy caused by the cost increase.

Smelting process of large garden screen
Weather resistant steel plates are key used in highway bridge engineering construction, because coupled with corrosion resistant aluminum alloy elements, the general bridge steel has excellent air corrosion resistance. It is indicated that the product is structural thick steel plate for highway bridge with thickness ≤150mm, alloy structural steel strip and cut thick steel plate for highway bridge with thickness ≤25.4mm, and structural channel steel for highway bridge with thickness ≤40mm.
Weather-resistant steel plate is generally selected for fine feed oven-smelting (coke oven, heating furnace - microcrystal strengthening solution - blowing -LF refining - low hydrogen rolling steel (feed the earth wire)- controlled rolling and cooling processing lines. During smelting, the waste steel is added to the furnace with the rehearth waste, smelted according to the basic processing technology, after the steel is added oxygen and aluminum alloy, the hot metal is blown to solve, and then cast, the hot metal after blowing temperature control is built into a billet by the continuous casting machine. Because rare earth elements are added to the steel, the weather-resistant steel plate is cleaned and the composition of debris is greatly reduced.
Weather resistant steel plate with maintenance rust layer resistance to air corrosion, can be used to produce cars, highway Bridges, tower bodies, shipping containers and other steel frame structure of low alloy tool steel. Compared with ordinary carbon steel, weather-resistant steel plates have better corrosion resistance in the air. Compared with stainless steel plate, weather-resistant steel plate can only have a small amount of aluminum alloy elements, such as phosphorus, copper, chromium, nickel, molybdenum, niobium, vanadium, titanium, etc., and the total production of aluminum alloy elements accounts for only a few percent, unlike stainless steel plate, so the price is cheaper.