Color steel plate
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key word:
Steel structure, purlin, color plate and accessories
Minimum order quantity
1
Classification
Choi Board
Product accessories
Colored steel plate refers to the coating or pressing of organic paint or plastic film on the surface of galvanized sheet, cold-rolled sheet or aluminized sheet in a continuous production line to form a new type of metallurgical product.
product details
Introduction
Colored steel plate refers to the coating or pressing of organic paint or plastic film on the surface of galvanized sheet, cold-rolled sheet or aluminized sheet in a continuous production line to form a new type of metallurgical product.
Features
Color steel plate not only has the strength of steel plate, but also has good corrosion resistance. The steel plate has a beautiful appearance.
production method
The production method of color steel plate is divided into plastic film lamination method and organic coating liquid roller coating method according to the production process. The coated plate produced by the roller coating method accounts for 90% of the total output. A typical roll coating production line is two-coating and two-baking, that is, two-coating and two-baking curing. For high-grade coating products with excellent weathering resistance, three-coating three-bake type and four-coating four-bake type are also used.
production process
The liquid roller coating operation line is divided into 5 sections: (1) The introduction section unwinds the substrate and sews the front and rear rolls with a sewing machine for uninterrupted production; (2) The pretreatment section includes degreasing, phosphating, and passivation to make the surface of the substrate A chemical pretreatment film is generated to improve the bonding strength of the coating and the substrate; (3) the roller coating curing section is subject to secondary painting and secondary drying curing; (4) the post-treatment section is to coat the surface of the organic coated steel plate Protective peelable film or waxed to prevent damage to the paint film. Some operation lines are also equipped with printing, embossing and other devices in this section; (5) the lead-out section is equipped with a coiler and a shearing machine, so that the finished product can be delivered in rolls or sheets.
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Large span structure. As the span of the structure increases, the proportion of the self-weight of the structure in the total load is also larger, and the reduction of the self-weight can obtain obvious economic benefits. For large-span structures, the advantages of light-weight steel structures are particularly prominent. The gymnasium in Shanghai, my country, which can accommodate 80,000 people, is an elliptical building with a spatial steel roof structure composed of radial cantilever lattices and circumferential trusses. The long axis is 288.4m, the short axis is 274.4m, and the maximum cantilever span of the roof is 73.5m. The Runyang Yangtze River Bridge was completed and opened to traffic in 2005. The main bridge in Nanhan is a single-hole double-hinged steel box girder suspension bridge with a main span of 1490m, which is currently the first in China and the third in the world.
Steel structures are used in various buildings and engineering structures, and there are many types. According to their connection methods, they can be divided into welded structures, bolted structures and riveted structures. Welded connection is the most important connection method for steel structures at present. Its advantages are simple structure, material saving, easy processing, and automatic operation. But welding can cause structural deformation and generate residual stress.
High strength and light weight. The strength of steel is high and the modulus of elasticity is also high, so the steel structural members are small and light. There are steels of various strength grades. Even the steels with lower strengths generally have a lower density-to-strength ratio than those of concrete and wood. Therefore, under the same stress conditions, the steel structure has a small self-weight and can be made into a larger span. Structure. Because the rod is small, it occupies less space, and is also convenient for transportation and installation.
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