1. Light weight: 10- 14kg/m2, which is equivalent to 1/30 2 of brick wall. Thermal insulation: thermal conductivity of core material: λ
4. Bright color: no surface decoration is needed, and the preservation period of the anticorrosive coating of colored galvanized steel plate is 10- 15 years. 5. Flexible and quick installation: the construction period can be shortened by more than 40%. 6 1. oxygen index: (OI)32.0 (provincial fire products quality inspection station).
Types and differences with plastic steel
The substrates of color-coated steel plates include cold-rolled substrates, hot-dip galvanized substrates and electro-galvanized substrates. Coating types can be divided into polyester, silicon modified polyester, vinylidene fluoride and plastisol. The surface state of color coated steel plate can be divided into coated plate, embossed plate and printed plate. Color coated steel plates are widely used in construction electrical appliances, transportation and other industries. For the construction industry, it is mainly used for roofs, walls and doors of industrial and commercial buildings such as steel structure factories, airports, warehouses and cold storage, and less used for civil buildings. It is different from plastic steel in material composition. Magnets can absorb. Strictly speaking, plastic steel and color steel can not be well distinguished in metal characteristics and surface treatment because they are similar. At present, the market division is mainly in the profile structure.
Magnets don't absorb iron, but they don't contain iron.
Because it is a common carbon steel material, the magnet can be adsorbed. In addition, stainless steel is the product of adding chromium (13% or more) on the basis of low carbon steel, so magnets can't be attracted. Magnets cannot be used to prove whether a substance contains no iron.
Edit the building color steel plate unit in this paragraph.
At the end of 1980s, China began to build color steel plate units, most of which were built in steel mills and joint ventures. The color steel plate process equipment was basically imported from abroad. By 2000, the domestic color steel plate reached 6.5438+0.73 million tons, with excess capacity. State-owned super-large steel enterprises such as Baosteel, Anshan Iron and Steel Group, Shougang, Tangshan Iron and Steel Group, Jigang, Kunming Iron and Steel Group, Handan Iron and Steel Group, WISCO and Panzhihua Iron and Steel Group have relatively high unit capacity and equipment level, and have successively built color steel plate units with an annual output of 6,543.8+0.2 million tons to 6,543.8+0.7 million tons by using foreign technology. At the same time, many private enterprises invest in the production of color steel plates, mostly using domestic equipment, with small production capacity, but fast start-up and low investment. Products are mainly oriented to building materials and decoration industries. In addition, foreign capital and Taiwan capital have also landed to build color painting units, but most of them are concentrated in coastal areas. Since 1999, with the prosperity of color-coated board market, the production and consumption of color-coated board have entered a period of rapid growth. From 2000 to 2004, the output increased at an average rate of 39.0%. By the end of 2005, the national production capacity of color-coated board was more than 8 million tons/year, and a number of color-coated units were under construction with a total production capacity of more than 9 million tons/year.
Edit the colored steel plate in this paragraph.
Before forming, it is coiled material. After forming, there are many models, the most commonly used ones are: 820, 840, 900 and so on! His composition structure is: protective film (now the product is gone), polyester paint, galvanized layer, steel plate (cold rolled plate and hot rolled plate), in the same order on the back! The above analysis does not represent authority!
Problems existing in editing this paragraph of color steel plate
1. Although the production capacity of the hot-dip galvanized substrate for building materials with the largest consumption at present is very large, there is a lack of good substrates such as flat hot-dip galvanized steel coils without zinc flakes and zinc alloy coated steel coils; 2. The variety and quality of domestic coatings can not fully meet the demand, and the high price of imported coatings reduces the competitiveness. The plastic film needed for pasting color plates still needs to be imported, and there is a lack of high-grade color plates with thick coating, strong functionality, high strength and rich colors; 3. The products are not standardized, the resources are wasted seriously, there are too many low-yield devices below 40,000 tons/year, and there are problems in product quality and environmental resources protection; 4. There are too many new color coating units in China, which far exceeds the market demand, resulting in low operating rate of colorful coating units, or even stop production.
Edit the development trend of this paragraph
First, the use of high-quality substrates requires higher and higher accuracy of the surface, shape and size of the substrates, such as flat hot-dip galvanized steel coils with small zinc flowers, flat hot-dip galvanized steel coils without zinc flowers, and zinc alloy hot-dip galvanized coils that rise in time; Indoor use, such as galvanized steel coil, film cold-rolled plate, aluminum coil. Secondly, the improvement of pretreatment process and pretreatment liquid has become the mainstream process with less equipment and low cost, and the stability, corrosion resistance and environmental protection performance of pretreatment liquid have been continuously improved. Third, attach importance to the development of new coatings and improve general polyester, polyvinylidene fluoride (PVDF) and plastisol to obtain superior color reproducibility, ultraviolet resistance, sulfur dioxide resistance and corrosion resistance; Develop pollution-resistant and heat-absorbing functional coatings. Fourth, the troops are better equipped. Such as adopting new welding machine, new roll coater, perfecting curing furnace and configuring advanced automatic instruments. Fifthly, because cold stamping has the characteristics of lower cost than hot stamping, beautiful appearance, strong three-dimensional sense and high strength, the production technology of cold stamping has become a development trend. Sixth, pay attention to the diversification, functionalization and high-grade products, such as deep drawing color coated board, "grapefruit skin" color coated board, anti-static color coated board, pollution-resistant color coated board, high heat absorption color coated board and so on.
Edit the color steel plate properties in this section.
The coating of color steel plate is the product of cold-rolled steel plate and galvanized steel plate, coating (roller coating) or composite organic film (PVC film, etc.). ) after surface chemical treatment, then baking and curing. Some people also call this product "pre-rolled coated color steel plate" and "plastic color steel plate". Color coated steel plate products are produced in rolls by manufacturers on continuous production lines, so they are also called color coated steel plate rolls. Colored steel plate not only has the characteristics of high mechanical strength and easy forming of steel materials, but also has good decoration and corrosion resistance of coating materials. Color steel plate is a highly respected new material in the world today. With the progress of science and technology, the enhancement of environmental awareness and the improvement of people's living standards, prefabricated houses are increasingly showing strong vitality and broad market prospects, and are favored by industries such as architecture, household appliances, electromechanical, transportation, interior decoration and office appliances. Prefabricated houses have the advantages of light weight, high strength, thermal insulation, beauty and durability, etc. They are high-grade buildings integrating architecture and decoration, and can be installed quickly. Movable houses are simple in construction and widely used in long-span factories, warehouses, office buildings, villas, roof floors, air purification rooms, cold storage, shops, kiosks, temporary houses and so on. The weight per square meter of light color steel plate sandwich panel is less than 14KG, which can fully reduce the structural load and reduce the structural cost of the trailer.
easy installation
The characteristics of prefabricated houses, such as light weight, splicing installation and free cutting, make the trailer installation simple, which can greatly improve efficiency and save construction period. The surface materials and thermal insulation materials of the flame-retardant color steel plate sandwich panel are incombustible materials, which can completely meet the requirements of the fire protection code for mobile homes.
last
A variety of studies show that it has been widely used abroad for more than 40 years. It has been proved that the shelf life of color steel plate treated with special coating is 10- 15 years, and the service life of prefabricated roof plate can reach more than 35 years after spraying anti-corrosion coating every 10 year. The beautiful profiled color steel plates have dozens of colors, which can meet the needs of any style of assembled houses and achieve satisfactory results.
thermal insulation
Commonly used thermal insulation materials for color steel plate composite board include rock wool, glass fiber wool, polystyrene (EPS), polyurethane, etc. And has low thermal conductivity and good thermal insulation effect. High-strength color steel plate is based on high-strength steel plate (tensile strength is 5600kg/cm) plus the most advanced design and roll forming. Therefore, prefabricated houses have excellent structural characteristics.
Edit the national standards and industry standards commonly used for color steel plates in this section.
GB/T 12755-9 1 profiled color steel plate for building GB 6723-86 general cold-formed open color steel plate size, shape, weight and allowable deviation GB 500 18-2002 technical specification for cold-formed thin-walled color steel plate GB 50205-200 1 color steel plate.
Edit the specifications and performance of this color steel plate.
Specification and performance of color steel sandwich panel: 1. Most of the color steel sandwich panels are tongue-and-groove inserted, which is convenient to install, saves time and materials, has good flatness and high strength, and is especially suitable for suspended ceilings and partition systems. 2. Thickness (mm): 50-250; 3. Length (mm): Due to continuous molding production, the length of the plate can be determined according to the needs of users; 4. Width (mm):1150 (1200) 5. Core material performance: a. Bulk density of polystyrene: ≥ 15kg/m3, thermal conductivity ≤0.036W/m.K, maximum service temperature: about 1000. M3 thermal conductivity: ≤0.043W/m.K Maximum service temperature: about 500 oC A| incombustibility: class B 1 B, incombustibility: class A, 950 corrugated color steel sandwich panel integrates corrugated board and sandwich panel, which is three times higher than that of ordinary flat color steel sandwich panel. It is connected with the roof truss through hidden self-drilling screws, which does not damage the exposed color-coated board. Plate-to-plate connection adopts the button cap type, which is convenient for construction and improves efficiency. The biggest feature is that it is not easy to seep water. B, the core material of rock wool thermal insulation color steel sandwich panel is made of basalt and other natural minerals as the main raw materials, which are melted into fibers at high temperature, added with a proper amount of binder and cured. This product is suitable for thermal insulation and sound insulation of industrial equipment, buildings and ships, and also suitable for ceilings and partitions of clean rooms and explosion-proof and fire-proof workshops. C. When the bonding strength of PU polyurethane color steel sandwich panel is not less than 0.09MPa, the combustion performance of the sandwich panel reaches B 1, the deflection of the sandwich panel is Lo/200(Lo is the support spacing), and the bending bearing capacity of the sandwich panel is not less than 0.5Kn/m2.
Edit the composition, classification and use of this colored steel plate.
The substrates of 1. color steel plate can be divided into cold-rolled substrates, hot-dip galvanized substrates and electro-galvanized substrates. 2. The coating types of color steel plate can be divided into polyester, silicon modified polyester, vinylidene fluoride and plastisol. 3. The colors of color steel plates can be divided into many categories according to the requirements of users, such as orange yellow, milky yellow, dark sky blue, navy blue, crimson, brick red, ivory, porcelain blue and so on. 4. The surface state of color steel plate can be divided into coated plate, embossed plate and printed plate. 5. The market uses of color-coated steel plates are mainly divided into three parts: construction, household appliances and transportation, among which the construction field accounts for the largest proportion, followed by household appliances, and transportation only accounts for a small part. Generally, color steel plates for buildings are based on hot-dip galvanized steel plates and hot-dip galvanized aluminum-zinc steel plates, and are mainly processed into corrugated board or polyurethane composite sandwich panels, which are used to build roofs, walls and doors of industrial and commercial buildings such as steel structure factories, airports, warehouses and freezers. Color plates for household appliances are mainly galvanized plates and cold plates, which are used to produce refrigerators, large air conditioning systems, freezers, bread makers, furniture and so on. Galvanized and cold plates are generally used as substrates in transportation industry, mainly used in oil pan and automobile interior decoration.