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1、命题考点九 建筑金属材料的特性与应用（Proposition nine properties and applications of building metal materials）1A410000 building engineering technology1A412000 building materials1A412000 construction material test section Gufen OnlineProposition nine: properties and applications of building metal materialsIf you encou
2、nter any queries during the course of your study, please sign up at the member center and ask questions and answers!textbookI. steel used for decoration1. ordinary hot rolled steelAccording to the different form of section steel, they can be divided into angle steel, flat steel, channel steel, I-bea
3、m and hot rolled L steel. Angle steel is divided into equal angle steel and unequal angle steel. Decorative Engineering commonly used equal angle steel specifications for 25, the thickness of 3mm and 4mm.2. cold-formed steelAccording to its section shape, cold formed steel has cold bending equilater
4、al, unequal angle steel, cold bending equilateral and scalene channel steel, cold-formed square steel tube, rectangular welded steel pipe and so on. Cold-formed steel is a kind of lightweight steel structure. It is widely used in decorative engineering stage or interior top lamp frame. It has decora
5、tive and load-bearing steel frame.3. stainless steel productsStainless steel is usually defined as a ferrous alloy with more than 12% chromium corrosion resistance. According to the kinds of corrosion-resistant alloy elements, they can be divided into chromium stainless steel, nickel chromium stainl
6、ess steel and nickel chromium titanium stainless steel. According to the characteristics of stainless steel, it can be divided into martensitic stainless steel, ferritic stainless steel and austenitic stainless steel. Austenitic stainless steel is a nickel chromium stainless steel, is the most widel
7、y usedStainless steel varieties. Decorative stainless steel products are mainly sheet and pipe, of which the most widely used plate. Decorative stainless steel for its unique luster, texture and modern breath, applied to indoor exterior walls, column finishes, curtain walls and indoor and outdoor st
8、aircase handrails, guardrail, elevator, wall protection, door, package and other parts of the project.4. color coated steel sheetColor coated steel plate has higher strength, rigidity and good processability (can be cut, cut, bend, roll, drill), changeable color and rich surface texture, and coating
9、 corrosion resistance, heat resistance, low temperature resistance. Coating adhesion is strong, after two mechanical processing, coating also does not destroy. It is applied to the exterior wall board, roof board, indoor wall board and ceiling board of various buildings. The utility model can also b
10、e used as an exhaust pipe, a ventilating pipe and other similar components and equipment with corrosion resistance requirements, and is also used as the outer shell of household appliances.5. color profiled steel sheetColor profiled steel sheet is widely used in exterior wall, roofing, ceiling and s
11、andwich panels. Square pressure plate (or grid plate) suitable for large public buildings and high-rise building curtain wall panels, and its matching with special fasteners, construction and maintenance are very convenient.6. light steel keelThe construction of light steel keel is made of continuou
12、s hot-dip galvanized steel (strip) or color coated steel plate (band) with continuous hot-dip galvanized steel sheet (band) as raw material, and thin-walled steel is produced by cold bending process. Light steel keel is the wooden keel products, with the ceiling or wall keel, and a variety of decora
13、tive panels (gypsum board, mineral wool board, etc.) with a light ceiling or wall, with its excellent thermal, acoustic, mechanical and process properties and changeable decorative style is widely used in decoration engineering.Two, decoration aluminum alloy1. pattern boardThe pattern board surface
14、is smooth, the cutting size is accurate and easy to install. It is widely used in the interior wall decoration of vehicles, ships, aircraft and stairs, pedals and other anti-skid parts. Aluminum shallow pattern board is a kind of unique metal decorative sheet in our country. The shallow tread plate
15、than ordinary plane plate stiffness, wear resistance, scratch resistance, and anti pollution, easy cleaning; good metallic luster and heat reflection properties; resistance to ammonia, sulfur and acid erosion of the shallow tread plate, strong ability of anti atmospheric corrosion. It can be used fo
16、r interior and carriage, plane, elevator and so on.2. aluminum corrugated plate and pressure plateCorrugated plate and pressure plate are made of pure aluminum or aluminum alloy plate by mechanical processing of special-shaped section plate. Widely used in buildings, workshops and other buildings roofing and wall finishes.ThreeAluminium and aluminium alloy perforated sound absorbing board
