Color coated steel be choosed according to the environment
2019年12月9日
Color coated steel be choosed according to the environment
Color coated steel-Different industries and different regions have different requirements for anti-corrosion, anti-aging and anti-fading of color plates. This article starts from the characteristics of 12 industries and regions such as general industrial plants, chemical workshops, metallurgical power, public and civil buildings. A brief selection of color schemes for special industry lines and special areas is provided for reference.
A. General industrial plant, warehouse logistics warehouse
Industry characteristics: ordinary industrial plants and warehouse logistics warehouses, they do not corrode the color coated steel themselves. The requirements for corrosion resistance and anti-aging of color coated steel are not high. More consideration of the practicality and cost performance of plant construction. Option: ordinary PE polyester color coated steel due to its high cost performance, It is most widely used in the enclosure system of general industrial plants and warehouse logistics warehouses.
B. Chemical industry
Industry characteristics: Chemical products have volatile characteristics and are prone to volatile substances with high corrosivity such as acidity or alkalinity. When exposed to water, it is easy to form dewdrops attached to the surface of the color plate, causing corrosion to the coating of the color coated steel. And it is possible to further corrode to the zinc layer or even the steel plate. Option: PVDF fluorocarbon color coated steel, SDP super weather resistant color coated steel or HDP high weather resistant color coated steel is recommended. Its anti-corrosion performance comparison: PVDF fluorocarbon color coated steel>SDP super weather resistant color coated steel>HDP high weather resistant color coated steel. Cost cost comparison: PVDF fluorocarbon color coated steel>SDP super weather resistant color coated steel>HDP high weather resistant color coated steel.
C. Metallurgy, power industry
Industry characteristics: Non-ferrous metal smelters (copper, zinc, aluminum, lead, etc.) are the most challenging color coated steel for years of use. Steel plants, power plants, etc. also produce corrosive media, which have high corrosion resistance requirements for color plates. Option: In view of the particularity of the metallurgical power industry, It is generally recommended to use PVDF fluorocarbon color coated steel, SDP super weather resistant color coated steel or HDP high weather resistant color coated steel.
D. Public and civil buildings
Industry characteristics: public and civil buildings, such as stadiums, high-speed rail stations, residential quarters, etc., beautiful, durable is the primary consideration for color coated steel. Therefore, it is important that the coating resists discoloration, chalking, and the surface of the coating is complete and delicate. Optional options: Public and residential buildings are concerned with many people and are close to each other. Therefore, the choice is generally to use PVDF fluorocarbon, SDP super weather resistant or HDP high weather resistant color coated steel, and choose more light colors.
E. Coastal areas
Industry characteristics: Due to the high humidity in the coastal areas and the salt spray climate formed by seawater, the corrosion damage of the color coated steel is large, and the corrosion resistance is mainly considered in the selection of color plates. The use of color coated steel by the sea requires thick coated plates or relatively dense coatings. Because the chloride ion in seawater is very permeable, it can directly corrode the substrate coating through a thin coating or a non-dense coating. Painted steel plates are not recommended where seawater can splash. Option: Consider the salt spray environment in coastal areas, Salt spray resistant PVDF fluorocarbon, SDP super weather resistant or HDP high weather resistant color coated steel is recommended.
F. Intense ultraviolet radiation in highland areas
Industry characteristics: China’s northwest plateau, strong ultraviolet radiation, easily lead to chalk coating. In the choice of color coated steel, the coating is mainly considered to be UV resistant. Selection scheme: It is recommended to use PVDF fluorocarbon with high UV resistance and corrosion resistance, SDP super weather resistant or HDP high weather resistant color coated steel.
G. Severe sandstorm areas
Industry characteristics:the large area occupied by desert, the sandstorm is serious all year round, and the surface of the color coated steel coating is more destructive. Option: SMP silicon modified polyester color coated steel due to its coating hardness, wear resistance, non-powdering, durability and other characteristics, It is more suitable for areas with severe sand and sand, including mining and other industries.
H. Food and drug industry
Industry characteristics: The food and drug industry belongs to the special regulatory industry of the country. The sanitary environment of the production workshop is extremely strict. Unqualified sanitation will directly affect the safety of food and medicine. Optional solution: Due to the use of special enamel series antibacterial agents in antibacterial color plate coating, Non-toxic and semi-permanent antibacterial effect and far-infrared radiation effect, Can produce more than 99% antibacterial rate against coliforms and Staphylococcus aureus, It is widely used in the fields where pharmaceuticals, food processing, etc. are strict in antibacterial requirements. At the same time, the easy-to-clean color plate is also easy to clean due to the good hydrophilic properties of the coating. It is widely used in the food and drug industry. Therefore, the food and drug industry recommends the use of antibacterial color coated steel or easy to clean color coated steel.
I. Textile and electronics industry
Industry characteristics: Due to its industry characteristics, static electricity is a very serious hazard. Lighter people affect normal production, and heavy ones lead to safety accidents. Option: anti-static color coated steel due to the addition of special conductive pigments in the coating, The surface of the color plate has a resistance, and the static electricity can be discharged by electric resistance to prevent dust from adhering and is easily removed. It is widely used in textile, electronics, optical equipment, medical facilities and other production environments that require dust and static electricity.
J. Large span arched roof
Industry features: The arched roof is characterized by its lack of beam, space, wide span, low cost, low investment, short construction period and economic benefits. It is widely used in sports venues, trading markets, exhibition halls, warehouse logistics and other fields. Due to the construction structure without beam and space, The vaulted roof has a higher requirement for the strength of the color coated steel. Option: according to the size of the arched roof span, It is recommended to use a high-strength color coated steel for the structure with a substrate yield strength of 280-550Mpa. Its brand number is: TS280GD+Z~TS550GD+Z
K. Mining industry
Industry characteristics: The mining environment is relatively harsh, the sand and dust are more serious, and the dust is mixed with metal dust. The precipitate will form rust on the surface of the color coated steel after being soaked in rainwater, which is more destructive to the corrosion of the color coated steel. After the ore deposited on the surface of the color coated steel is blown by the wind, the damage to the surface of the coating is also severe. Selection scheme: It is recommended to use SMP silicon modified polyester color coated steel which is anti-corrosion, scratch-resistant and wear-resistant.
L. Caigang Activity Room-color steel plate
Industry characteristics: The activity room is mainly used in various construction sites. As temporary office, accommodation, and storage, in the case of ensuring safety, Therefore, more economic and practical types are considered, and prices are more concerned. Option: It is recommended to use ordinary PE polyester color coated steel with high cost performance.
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